Pub Date : 2023-10-16DOI: 10.1080/00222348.2023.2271745
Z K Heiba, Mohamed Bakr Mohamed, A. M. Aldhafiri, A. M. El-naggar, A. M. Kamal, A. A. Albassam
AbstractPolymethyl methacrylate/multiwalled carbon nanotubes (PMMA/MWCNTs)/3 wt % (1-x) MnFe2O4/xZnMn2O4 (x = 0, 0.2, 0.5, 0.8) samples were formed using the sol-gel and solvent casting routes. The Rietveld refinement method was applied to explore the different phases in the MnFe2O4/xZnMn2O4 samples. The nano natures of the fillers were investigated using a high resolution transmission electron microscope. The X-ray diffraction technique was used to study the nature of the structure of all polymers. The direct and indirect optical band gap energy (Eg) values for our PMMA/MWCNTs were 5.01 and 4.71 eV, respectively. The direct and indirect Eg values were reduced by doping the polymer with (1-x)MnFe2O4/xZnMn2O4; they were 4.95 and 4.56 eV, respectively, for polymer doped with x = 0.8. The effect of the amount of ZnMn2O4 phase in the nanofillers on the linear and nonlinear optical parameters and also the dielectric constants, electric modulus, and energy density of PMMA/MWCNTs were studied using diffused reflectance and LCR meter techniques. Under an excitation wavelength of 317 nm, the fluorescence spectra of pure PMMA/MWCNTs as well as PMMA/MWCNTs loaded with (1-x)MnFe2O4/xZnMn2O4 samples were inspectedKeywords: PMMA/MWCNTsMnFe2O4-ZnMn2O4 nanocompositesstructureopticaldielectricDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also.
{"title":"Exploring the structural, optical and dielectric behaviors of poly(methyl methacrylate)/multiwalled carbon nanotubes/MnFe <sub>2</sub> O <sub>4</sub> -ZnMn <sub>2</sub> O <sub>4</sub> nanocomposite polymers","authors":"Z K Heiba, Mohamed Bakr Mohamed, A. M. Aldhafiri, A. M. El-naggar, A. M. Kamal, A. A. Albassam","doi":"10.1080/00222348.2023.2271745","DOIUrl":"https://doi.org/10.1080/00222348.2023.2271745","url":null,"abstract":"AbstractPolymethyl methacrylate/multiwalled carbon nanotubes (PMMA/MWCNTs)/3 wt % (1-x) MnFe2O4/xZnMn2O4 (x = 0, 0.2, 0.5, 0.8) samples were formed using the sol-gel and solvent casting routes. The Rietveld refinement method was applied to explore the different phases in the MnFe2O4/xZnMn2O4 samples. The nano natures of the fillers were investigated using a high resolution transmission electron microscope. The X-ray diffraction technique was used to study the nature of the structure of all polymers. The direct and indirect optical band gap energy (Eg) values for our PMMA/MWCNTs were 5.01 and 4.71 eV, respectively. The direct and indirect Eg values were reduced by doping the polymer with (1-x)MnFe2O4/xZnMn2O4; they were 4.95 and 4.56 eV, respectively, for polymer doped with x = 0.8. The effect of the amount of ZnMn2O4 phase in the nanofillers on the linear and nonlinear optical parameters and also the dielectric constants, electric modulus, and energy density of PMMA/MWCNTs were studied using diffused reflectance and LCR meter techniques. Under an excitation wavelength of 317 nm, the fluorescence spectra of pure PMMA/MWCNTs as well as PMMA/MWCNTs loaded with (1-x)MnFe2O4/xZnMn2O4 samples were inspectedKeywords: PMMA/MWCNTsMnFe2O4-ZnMn2O4 nanocompositesstructureopticaldielectricDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also.","PeriodicalId":16285,"journal":{"name":"Journal of Macromolecular Science, Part B","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136143093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
AbstractPolyimide (PI) films equipped on the surface of spacecraft are susceptible to ultraviolet damage. Herein, the performance of two kinds of polyimide films i.e. 3,3',4,4'-biphenyl dianhydride-p-phenylenediamine (BPDA-PDA) and pyromellitic dianhydride-4,4'-oxydianiline (PMDA-ODA) under vacuum ultraviolet (VUV, 172 nm) irradiation was studied. The failure behavior of the PI films was studied by tensile tests, thermogravimetry (TGA), thermomechanical analysis (TMA), electric breakdown, UV-visible transmittance and scanning electron microscopy (SEM). Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) were used to analyze the molecular structure. The results indicated that the tensile strength of BPDA-PDA PI and PMDA-ODA PI films decreased by 10.4% and 7.4% under VUV irradiation, respectively; the breakdown strength and UV-transmittance also deteriorated. Besides, the surface morphology of the PI films showed a large number of microcracks after VUV irradiation, which we ascribe to the breakage of imide rings (C-N-C) and ether bonds (C-O-C) of the PI films. However, the thermal stability (residual weight) of both PI films remained constant compared to the initial level; this can be explained by the combined effect of bond breaking and cross-linking of the polyimide films.Keywords: Polyimide filmVacuum ultravioletProperty evolutionMolecular structureDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also.
{"title":"Radiation effect of vacuum ultraviolet on the performance of polyimide films","authors":"Jiaqi Chen, Tingting Zhao, Ling Zhou, Bo Xu, Yanyun Ju, Qimeng Zhang, Zhongkui Wu","doi":"10.1080/00222348.2023.2272099","DOIUrl":"https://doi.org/10.1080/00222348.2023.2272099","url":null,"abstract":"AbstractPolyimide (PI) films equipped on the surface of spacecraft are susceptible to ultraviolet damage. Herein, the performance of two kinds of polyimide films i.e. 3,3',4,4'-biphenyl dianhydride-p-phenylenediamine (BPDA-PDA) and pyromellitic dianhydride-4,4'-oxydianiline (PMDA-ODA) under vacuum ultraviolet (VUV, 172 nm) irradiation was studied. The failure behavior of the PI films was studied by tensile tests, thermogravimetry (TGA), thermomechanical analysis (TMA), electric breakdown, UV-visible transmittance and scanning electron microscopy (SEM). Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) were used to analyze the molecular structure. The results indicated that the tensile strength of BPDA-PDA PI and PMDA-ODA PI films decreased by 10.4% and 7.4% under VUV irradiation, respectively; the breakdown strength and UV-transmittance also deteriorated. Besides, the surface morphology of the PI films showed a large number of microcracks after VUV irradiation, which we ascribe to the breakage of imide rings (C-N-C) and ether bonds (C-O-C) of the PI films. However, the thermal stability (residual weight) of both PI films remained constant compared to the initial level; this can be explained by the combined effect of bond breaking and cross-linking of the polyimide films.Keywords: Polyimide filmVacuum ultravioletProperty evolutionMolecular structureDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also.","PeriodicalId":16285,"journal":{"name":"Journal of Macromolecular Science, Part B","volume":"439 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136142623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-13DOI: 10.1080/00222348.2023.2270825
Xiang Sun, Shulai Lu, Zhenbiao Song, Ning Kang, Shicheng Zhao
AbstractAcrylonitrile-Butadiene-Styrene (ABS) resin is a typical elastomer-toughening plastic, where the rubber component is polybutadiene (PB). In this paper, the influence of PB-g-Styrene-Acrylonitrile (SAN) concentration on the mechanical properties as well as the flow behavior of the ABS resin was studied. The notched impact strength of the ABS resin including 30 wt% PB-g-SAN was 18.7 kJ/m2, more than five times as high as that of neat SAN resin (3.8 kJ/m2). Scanning electron microscopy (SEM) examination confirmed that the primary reason of the improved toughness of the ABS resin was the shear yielding effect of the matrix. Additionally, a melt flow indexer, rotating rheometer, torque rheometer and dynamic mechanical analyzer (DMA) were utilized to analyze the influence of PB-g-SAN concentration on the ABS resin flow behavior. The results showed that the melt flow rate (MFR) of the ABS resin decreased linearly and the complex viscosity (η*) as well as the tensile plateau modulus (E’) values increased significantly with the growing concentration of PB-g-SAN. This indicated that the flow behavior of the ABS resin was negatively affected when excess PB-g-SAN concentration was added. The entanglement effect between the SAN copolymer on the PB particles surface and the matrix SAN molecular chains, as well as the PB particle volume effect, were suggested to be the main reasons of the negative effect. This research, we suggest, will provide profound scientific guidance for regulating the mechanical and processing characteristics of the ABS resin.Keywords: Polybutadiene-g-(Styrene-Acrylonitrile)Acrylonitrile-Butadiene-Styrene resinToughnessEntanglementFlow behaviorDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also.
{"title":"The influence of Polybutadiene-g-(Styrene-Acrylonitrile) concentration on the mechanical properties and flow behavior of Acrylonitrile-Butadiene-Styrene resin","authors":"Xiang Sun, Shulai Lu, Zhenbiao Song, Ning Kang, Shicheng Zhao","doi":"10.1080/00222348.2023.2270825","DOIUrl":"https://doi.org/10.1080/00222348.2023.2270825","url":null,"abstract":"AbstractAcrylonitrile-Butadiene-Styrene (ABS) resin is a typical elastomer-toughening plastic, where the rubber component is polybutadiene (PB). In this paper, the influence of PB-g-Styrene-Acrylonitrile (SAN) concentration on the mechanical properties as well as the flow behavior of the ABS resin was studied. The notched impact strength of the ABS resin including 30 wt% PB-g-SAN was 18.7 kJ/m2, more than five times as high as that of neat SAN resin (3.8 kJ/m2). Scanning electron microscopy (SEM) examination confirmed that the primary reason of the improved toughness of the ABS resin was the shear yielding effect of the matrix. Additionally, a melt flow indexer, rotating rheometer, torque rheometer and dynamic mechanical analyzer (DMA) were utilized to analyze the influence of PB-g-SAN concentration on the ABS resin flow behavior. The results showed that the melt flow rate (MFR) of the ABS resin decreased linearly and the complex viscosity (η*) as well as the tensile plateau modulus (E’) values increased significantly with the growing concentration of PB-g-SAN. This indicated that the flow behavior of the ABS resin was negatively affected when excess PB-g-SAN concentration was added. The entanglement effect between the SAN copolymer on the PB particles surface and the matrix SAN molecular chains, as well as the PB particle volume effect, were suggested to be the main reasons of the negative effect. This research, we suggest, will provide profound scientific guidance for regulating the mechanical and processing characteristics of the ABS resin.Keywords: Polybutadiene-g-(Styrene-Acrylonitrile)Acrylonitrile-Butadiene-Styrene resinToughnessEntanglementFlow behaviorDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also.","PeriodicalId":16285,"journal":{"name":"Journal of Macromolecular Science, Part B","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135853027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-12DOI: 10.1080/00222348.2023.2270269
Z K Heiba, A. M. El-naggar, A. M. Kamal, A. M. Aldhafiri, Mohamed Bakr Mohamed
AbstractPolyvinyl chloride (PVC)/polyethylene oxide (PEO)/x wt % polyaniline (PANI) polymer blends were produced using a solvent casting method. X-ray diffraction was used to investigate the formed blends. The effect of adding different amounts of PANI on the light absorbance, transmittance, reflectance, extinction coefficient, refractive index, optical dielectric properties, nonlinear optical parameters and relaxation time characteristics of the PVC/PEO blends were explored. The direct and indirect optical band gap energies of the undoped PVC/PEO were 4.25 and (4.06, 2.76) eV, respectively. The direct and indirect optical band gap energies were reduced to their lowest values (4.02, 3.1) and (3.68, 2.14, 1.12) eV as the amounts of PANI was increased to 0.2 wt %. The effect of alloying between PVC and PEO and adding PANI on the emitted fluorescence spectra under various excitation wavelengths were investigated. All samples displayed varying degrees of blue-violet, blue, or blue-green colors depending on the concentrations of PANI.Keywords: PVC/PEOPANI ratiosstructureopticaldielectricstored energyDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also.
{"title":"Influence of polyaniline on the structural, linear/nonlinear optical, and dielectric characteristics of poly(vinyl chloride/poly (ethylene oxide) blends","authors":"Z K Heiba, A. M. El-naggar, A. M. Kamal, A. M. Aldhafiri, Mohamed Bakr Mohamed","doi":"10.1080/00222348.2023.2270269","DOIUrl":"https://doi.org/10.1080/00222348.2023.2270269","url":null,"abstract":"AbstractPolyvinyl chloride (PVC)/polyethylene oxide (PEO)/x wt % polyaniline (PANI) polymer blends were produced using a solvent casting method. X-ray diffraction was used to investigate the formed blends. The effect of adding different amounts of PANI on the light absorbance, transmittance, reflectance, extinction coefficient, refractive index, optical dielectric properties, nonlinear optical parameters and relaxation time characteristics of the PVC/PEO blends were explored. The direct and indirect optical band gap energies of the undoped PVC/PEO were 4.25 and (4.06, 2.76) eV, respectively. The direct and indirect optical band gap energies were reduced to their lowest values (4.02, 3.1) and (3.68, 2.14, 1.12) eV as the amounts of PANI was increased to 0.2 wt %. The effect of alloying between PVC and PEO and adding PANI on the emitted fluorescence spectra under various excitation wavelengths were investigated. All samples displayed varying degrees of blue-violet, blue, or blue-green colors depending on the concentrations of PANI.Keywords: PVC/PEOPANI ratiosstructureopticaldielectricstored energyDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also.","PeriodicalId":16285,"journal":{"name":"Journal of Macromolecular Science, Part B","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135969116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-04DOI: 10.1080/00222348.2023.2265237
Yanbing Hou, Yiwen Sun, Rui Wang, Yandan Zhang, Fusheng Liu, Jingjie Han
AbstractThe superior physical and mechanical performances of halloysite nanotubes (HNTs) make them ideal fillers for rubber reinforcement. However, due to the abundant hydroxyl groups on their surface, they are highly polar and have poor compatibility with polymers, making it difficult for them to disperse uniformly in polymers, thus limiting their application in rubber composites to a certain extent. In this paper, noncovalently modified HNTs filled with a natural rubber/chloroprene rubber/chloro-isobutylene-isoprene rubber (NR/CR/CIIR) blend system, using polydopamine（PDA） as a surface modifier, was investigated. and a green and high-performance PDA/HNTs/NR/CR/CIIR composite was prepared by mechanical blending. Transmission electron microscopy (TEM) showed that the original HNTs had a hollow, multi-walled nanotube structure, and the outer surface of the PDA-modified halloysite nanotubes（PDA/HNTs）showed an obvious cladding layer. X-ray diffraction indicated that the modification experiments did not damage the halloysite crystal structure; the modifier only interacted on the outer surface of the HNTs. Zeta potential and thermogravimetric analysis (TGA) further indicated the presence of interfacial interactions between PDA and HNTs, suggesting that PDA was successfully grafted to the surface of HNTs. In addition, the effects of PDA/HNTs on the mechanical properties, vulcanization properties and Rubber Process Analyzer (RPA analysis) of the NR/CR/CIIR blend were also investigated. The dispersion of HNTs in the NR/CR/CIIR blend was enhanced by the adsorption of PDA on the HNTs surface by non-covalent bonds, and the comprehensive properties of the composites were improved.Keywords: halloysite nanotubesdopaminecomposite materialsDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. Declaration of conflicting interestsThe authors declare no potential conflicts of interest.Data Availability StatementsThe data sets generated and/or analysed during the current study are available from the corresponding author on reasonable request.Additional informationFundingThis research was funded by the research fund of Qingdao University of Science and Technology（9210-1203043003023）
{"title":"Preparation and characterization of polydopamine-modified halloysite nanotubes and their effect on a natural rubber, chloroprene rubber and chloro-isobutylene-isoprene rubber blend","authors":"Yanbing Hou, Yiwen Sun, Rui Wang, Yandan Zhang, Fusheng Liu, Jingjie Han","doi":"10.1080/00222348.2023.2265237","DOIUrl":"https://doi.org/10.1080/00222348.2023.2265237","url":null,"abstract":"AbstractThe superior physical and mechanical performances of halloysite nanotubes (HNTs) make them ideal fillers for rubber reinforcement. However, due to the abundant hydroxyl groups on their surface, they are highly polar and have poor compatibility with polymers, making it difficult for them to disperse uniformly in polymers, thus limiting their application in rubber composites to a certain extent. In this paper, noncovalently modified HNTs filled with a natural rubber/chloroprene rubber/chloro-isobutylene-isoprene rubber (NR/CR/CIIR) blend system, using polydopamine（PDA） as a surface modifier, was investigated. and a green and high-performance PDA/HNTs/NR/CR/CIIR composite was prepared by mechanical blending. Transmission electron microscopy (TEM) showed that the original HNTs had a hollow, multi-walled nanotube structure, and the outer surface of the PDA-modified halloysite nanotubes（PDA/HNTs）showed an obvious cladding layer. X-ray diffraction indicated that the modification experiments did not damage the halloysite crystal structure; the modifier only interacted on the outer surface of the HNTs. Zeta potential and thermogravimetric analysis (TGA) further indicated the presence of interfacial interactions between PDA and HNTs, suggesting that PDA was successfully grafted to the surface of HNTs. In addition, the effects of PDA/HNTs on the mechanical properties, vulcanization properties and Rubber Process Analyzer (RPA analysis) of the NR/CR/CIIR blend were also investigated. The dispersion of HNTs in the NR/CR/CIIR blend was enhanced by the adsorption of PDA on the HNTs surface by non-covalent bonds, and the comprehensive properties of the composites were improved.Keywords: halloysite nanotubesdopaminecomposite materialsDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. Declaration of conflicting interestsThe authors declare no potential conflicts of interest.Data Availability StatementsThe data sets generated and/or analysed during the current study are available from the corresponding author on reasonable request.Additional informationFundingThis research was funded by the research fund of Qingdao University of Science and Technology（9210-1203043003023）","PeriodicalId":16285,"journal":{"name":"Journal of Macromolecular Science, Part B","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135590983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-02DOI: 10.1080/00222348.2023.2266278
Mohamed el Amine Zennaki, Lahcene Tennouga, Soraya Balkaid
{"title":"Preparation of sulfonated polystyrene-iron composite material and study of their cationic and anionic dyes adsorption properties","authors":"Mohamed el Amine Zennaki, Lahcene Tennouga, Soraya Balkaid","doi":"10.1080/00222348.2023.2266278","DOIUrl":"https://doi.org/10.1080/00222348.2023.2266278","url":null,"abstract":"","PeriodicalId":16285,"journal":{"name":"Journal of Macromolecular Science, Part B","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135900171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-25DOI: 10.1080/00222348.2023.2263293
Poonam Sharma, Dimple V. Shah, Sanketsinh Thakor, Atul D Watpade, V. A. Rana, Chandan R. Vaja
ABSTRACTEpoxy nano- magnetic composites exhibit remarkable and promising properties by synergistically combining the properties of epoxy resin and magnetic nanofillers. The current study deals with the synthesis of Fe3O4, NiFe2O4 and CoFe2O4 nanoparticles and their respective nanoparticles-doped epoxy composites, as well as the structural, optical and dielectric characterization of the resultant nano-composites. To investigate the surface morphology of the synthesized nanoparticles, field emission electron microscopy (FESEM) analysis was employed. By measuring electron diffraction spectroscopy (EDS), the presence of various chemicals was verified. X-ray diffraction (XRD) was used to determine the structural details of the synthesized nanoparticles and nanoparticles-doped epoxy composites. The structural chemistry and surface functionality of the nano-epoxy composites were investigated using Fourier transform infrared spectroscopy (FTIR). The magnetic properties of the synthesized nanoparticles and nanoparticles loaded epoxy composites were also studied using a vibrating sample magnetometer (VSM). UV–visible reflection spectroscopy was also carried out to find the optical properties of the synthesized nanoparticles, neat (undoped) epoxy and nanoparticles-doped epoxy composites. Dielectric spectroscopy measurements of nanoparticles-doped epoxy composites were performed using an Agilent E4980A precision LCR (Inductance Capacitance Resistance) meter with an Agilent 16451B-test fixture LCR and vector network analyzer (VNA) in the frequency span of 10 KHz to 2 MHz and 200 MHz to 20 GHz, respectively. The influence of the synthesized nanoparticles on the neat (undoped) epoxy composites and the results in view of a future applications is fully discussed.Keywords: Magnetic nano particlesEpoxy compositesX-ray diffractionDielectric SpectroscopyVector network analyzerDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also.
{"title":"Compositional Influence of Synthesized Magnetic Nanoparticles on Epoxy Composites: Dielectric, Magnetic and Optical Characteristics","authors":"Poonam Sharma, Dimple V. Shah, Sanketsinh Thakor, Atul D Watpade, V. A. Rana, Chandan R. Vaja","doi":"10.1080/00222348.2023.2263293","DOIUrl":"https://doi.org/10.1080/00222348.2023.2263293","url":null,"abstract":"ABSTRACTEpoxy nano- magnetic composites exhibit remarkable and promising properties by synergistically combining the properties of epoxy resin and magnetic nanofillers. The current study deals with the synthesis of Fe3O4, NiFe2O4 and CoFe2O4 nanoparticles and their respective nanoparticles-doped epoxy composites, as well as the structural, optical and dielectric characterization of the resultant nano-composites. To investigate the surface morphology of the synthesized nanoparticles, field emission electron microscopy (FESEM) analysis was employed. By measuring electron diffraction spectroscopy (EDS), the presence of various chemicals was verified. X-ray diffraction (XRD) was used to determine the structural details of the synthesized nanoparticles and nanoparticles-doped epoxy composites. The structural chemistry and surface functionality of the nano-epoxy composites were investigated using Fourier transform infrared spectroscopy (FTIR). The magnetic properties of the synthesized nanoparticles and nanoparticles loaded epoxy composites were also studied using a vibrating sample magnetometer (VSM). UV–visible reflection spectroscopy was also carried out to find the optical properties of the synthesized nanoparticles, neat (undoped) epoxy and nanoparticles-doped epoxy composites. Dielectric spectroscopy measurements of nanoparticles-doped epoxy composites were performed using an Agilent E4980A precision LCR (Inductance Capacitance Resistance) meter with an Agilent 16451B-test fixture LCR and vector network analyzer (VNA) in the frequency span of 10 KHz to 2 MHz and 200 MHz to 20 GHz, respectively. The influence of the synthesized nanoparticles on the neat (undoped) epoxy composites and the results in view of a future applications is fully discussed.Keywords: Magnetic nano particlesEpoxy compositesX-ray diffractionDielectric SpectroscopyVector network analyzerDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also.","PeriodicalId":16285,"journal":{"name":"Journal of Macromolecular Science, Part B","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135864729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract:In order to investigate the effect of refractory metal on the high temperature properties of phenolic resin matrix composites, modified quartz fiber reinforced ceramizable composites were prepared by a molding process with a refractory component, tungsten, as the functional component and boron carbide as the ceramic forming agent. The effects of the tungsten and the boron carbide on the heat resistance of the composite were investigated. The results showed that the introduced refractory metal tungsten and the boron carbide can react to form tungsten borides and tungsten carbides at high temperature, and form a ceramic layer on the surface of the composite, which can fill the defects caused by pyrolysis of matrix and improve the high temperature performance of the composite. When the content of boron carbide was 10wt% and the content of tungsten powder was 30wt%, the flexural strength of the composite before and after heat treatment at 1200 °C were increased by 54.6% and 30.2% respectively compared with that without filler.Keywords: Refractory metalsBoron carbideBoron phenolic resinThermal protectionCeramizable compositesDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paperTable 1 Formulas of ceramizable compositesDownload CSVDisplay TableTable 2 Thermal decomposition properties of compositesDownload CSVDisplay TableFigure 1 Curing process curves of ceramizable phenolic resin compositesDisplay full sizeFigure 2 TGA and DTGA curves of the composites in air atmosphere (a: TGA curves; b: DTGA curves)Display full sizeFigure 3 Flexural strength of the composites treated at different temperaturesDisplay full sizeFigure 4 Surface morphology of the composites after being treated at different temperatures （a：600 °C；b：1000 °C）Display full sizeFigure 5 Surface morphology of B0W0 after being treated at 1400 °C and the corresponding EDS mapping results.Display full sizeFigure 6 Surface morphology of B0W30 after being treated at 1400 °C and the corresponding EDS mapping results.Display full sizeDisplay full sizeFigure 7 Surface morphology of B10W30 after being treated at 1400 °C and the corresponding EDS mapping results.Display full sizeFigure 8 XRD patterns of cracked products of the composites after being treated at various temperatures (a：B0W30；b：B10W30)Display full sizeFigure 9 Gibbs free energy change curves of the reactions. (reaction 1: the oxidation reaction of W; reaction 8 : t
{"title":"High temperature flexural strength, microstructure, and phase evolution of quartz fiber/boron phenolic resin ceramizable composite modified with W and B <sub>4</sub> C","authors":"He Ding, Sige Huang, Xiaofan Liu, Zongyi Deng, Minxian Shi, Zhixiong Huang, Yue Wu","doi":"10.1080/00222348.2023.2259172","DOIUrl":"https://doi.org/10.1080/00222348.2023.2259172","url":null,"abstract":"Abstract:In order to investigate the effect of refractory metal on the high temperature properties of phenolic resin matrix composites, modified quartz fiber reinforced ceramizable composites were prepared by a molding process with a refractory component, tungsten, as the functional component and boron carbide as the ceramic forming agent. The effects of the tungsten and the boron carbide on the heat resistance of the composite were investigated. The results showed that the introduced refractory metal tungsten and the boron carbide can react to form tungsten borides and tungsten carbides at high temperature, and form a ceramic layer on the surface of the composite, which can fill the defects caused by pyrolysis of matrix and improve the high temperature performance of the composite. When the content of boron carbide was 10wt% and the content of tungsten powder was 30wt%, the flexural strength of the composite before and after heat treatment at 1200 °C were increased by 54.6% and 30.2% respectively compared with that without filler.Keywords: Refractory metalsBoron carbideBoron phenolic resinThermal protectionCeramizable compositesDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paperTable 1 Formulas of ceramizable compositesDownload CSVDisplay TableTable 2 Thermal decomposition properties of compositesDownload CSVDisplay TableFigure 1 Curing process curves of ceramizable phenolic resin compositesDisplay full sizeFigure 2 TGA and DTGA curves of the composites in air atmosphere (a: TGA curves; b: DTGA curves)Display full sizeFigure 3 Flexural strength of the composites treated at different temperaturesDisplay full sizeFigure 4 Surface morphology of the composites after being treated at different temperatures （a：600 °C；b：1000 °C）Display full sizeFigure 5 Surface morphology of B0W0 after being treated at 1400 °C and the corresponding EDS mapping results.Display full sizeFigure 6 Surface morphology of B0W30 after being treated at 1400 °C and the corresponding EDS mapping results.Display full sizeDisplay full sizeFigure 7 Surface morphology of B10W30 after being treated at 1400 °C and the corresponding EDS mapping results.Display full sizeFigure 8 XRD patterns of cracked products of the composites after being treated at various temperatures (a：B0W30；b：B10W30)Display full sizeFigure 9 Gibbs free energy change curves of the reactions. (reaction 1: the oxidation reaction of W; reaction 8 : t","PeriodicalId":16285,"journal":{"name":"Journal of Macromolecular Science, Part B","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135965996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-23DOI: 10.1080/00222348.2023.2262811
Linfeng Fan, Jun Cao, Xinkun Suo, Li Liu, Hailiang Xu, Shiming Wang
ABSTRACTThree types of polyimide/polyamide imide/epoxy resin (PI/PAI/EP) coating materials filled with different amounts of WS2 and ZnO were designed, and the coatings were prepared on the surface of 1010 steel substrates using liquid spray coating technology. The mechanical and tribological characteristics of these coatings were investigated. The CoFs (coefficients of friction) of these coatings were lower than those of the copper alloy proposed to be replaced under dry sliding wear and water lubrication. The lowest CoF of 0.237 was achieved with 7.35 wt% WS2, and the highest CoF of 0.251 was observed for 4 wt% ZnO. However, the coating with 7.35 wt% WS2 had the lowest hardness and poorest load-bearing capacity under water lubrication. The coating with 4wt % ZnO had the best load-bearing capacity and the lowest wear rate. The agglomeration of the coating on the substrate was influenced by the content of ZnO. The CoF of the coating was influenced by both the transfer film formed by WS2 and the amount of ZnO floating on the surface of the coating. The embedding of sand into the coating surface during friction increased the surface roughness, which led to an increase in the CoF.Keywords: —Polymer coatingDry sliding wearWater lubricationSediment wearCoefficients of frictionDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. AcknowledgementsThis research was supported by the National Nature Science Foundation of China (52005273), the Natural Science Foundation of Zhejiang Province (LQ20E050007), the Ningbo Key Research and Development Program (2022Z050, 2023T010, 2023T013), and the Hunan Science and Technology Innovation Project (2022RC4016). This research was also supported by Yongsheng Jin (Ningbo Silver-ball Technology Co.; Ltd.; Ningbo 315207, China), and Jinxing Wu (Hunan Zhuoer Bearing Tech. Co.; Ltd.; Loudi 417000, China).Declaration of Interest StatementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.Table 1 Composition and addition amount of coatingsDownload CSVDisplay TableTable 2 CoFs between copper alloy and different composite coatingsDownload CSVDisplay TableFigure 1. Coating preparation processDisplay full sizeFigure 2. The polished cross-section microstructure of polished composite coating: (a) T1 coating; (b) T2 coating; (c) T3 coatingDisplay full sizeFigure 3. Distribution of Zn, W, and S elements in composite coatings: Zn element distribution in T1 (a1), T2 (b1), and T3 (c1) coatings; S element distribution in T1 (a2), T2 (b2), an
{"title":"The tribological properties of polyimide/polyamide imide/epoxy coating filled by WS <sub>2</sub> and ZnO under dry, water, and sediment conditions","authors":"Linfeng Fan, Jun Cao, Xinkun Suo, Li Liu, Hailiang Xu, Shiming Wang","doi":"10.1080/00222348.2023.2262811","DOIUrl":"https://doi.org/10.1080/00222348.2023.2262811","url":null,"abstract":"ABSTRACTThree types of polyimide/polyamide imide/epoxy resin (PI/PAI/EP) coating materials filled with different amounts of WS2 and ZnO were designed, and the coatings were prepared on the surface of 1010 steel substrates using liquid spray coating technology. The mechanical and tribological characteristics of these coatings were investigated. The CoFs (coefficients of friction) of these coatings were lower than those of the copper alloy proposed to be replaced under dry sliding wear and water lubrication. The lowest CoF of 0.237 was achieved with 7.35 wt% WS2, and the highest CoF of 0.251 was observed for 4 wt% ZnO. However, the coating with 7.35 wt% WS2 had the lowest hardness and poorest load-bearing capacity under water lubrication. The coating with 4wt % ZnO had the best load-bearing capacity and the lowest wear rate. The agglomeration of the coating on the substrate was influenced by the content of ZnO. The CoF of the coating was influenced by both the transfer film formed by WS2 and the amount of ZnO floating on the surface of the coating. The embedding of sand into the coating surface during friction increased the surface roughness, which led to an increase in the CoF.Keywords: —Polymer coatingDry sliding wearWater lubricationSediment wearCoefficients of frictionDisclaimerAs a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. AcknowledgementsThis research was supported by the National Nature Science Foundation of China (52005273), the Natural Science Foundation of Zhejiang Province (LQ20E050007), the Ningbo Key Research and Development Program (2022Z050, 2023T010, 2023T013), and the Hunan Science and Technology Innovation Project (2022RC4016). This research was also supported by Yongsheng Jin (Ningbo Silver-ball Technology Co.; Ltd.; Ningbo 315207, China), and Jinxing Wu (Hunan Zhuoer Bearing Tech. Co.; Ltd.; Loudi 417000, China).Declaration of Interest StatementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.Table 1 Composition and addition amount of coatingsDownload CSVDisplay TableTable 2 CoFs between copper alloy and different composite coatingsDownload CSVDisplay TableFigure 1. Coating preparation processDisplay full sizeFigure 2. The polished cross-section microstructure of polished composite coating: (a) T1 coating; (b) T2 coating; (c) T3 coatingDisplay full sizeFigure 3. Distribution of Zn, W, and S elements in composite coatings: Zn element distribution in T1 (a1), T2 (b1), and T3 (c1) coatings; S element distribution in T1 (a2), T2 (b2), an","PeriodicalId":16285,"journal":{"name":"Journal of Macromolecular Science, Part B","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135965992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-20DOI: 10.1080/00222348.2023.2256583
M. G. Althobaiti, Ali Badawi
Abstract The linear/non-linear optical and dielectric performance of PVA/PVP/graphene composites were enhanced by doping with Cu/ZnO (ZCO) nanoparticles (NPs) for optoelectronic applications. Bare and ZCO polymeric nanocomposites (PNCs) blends were fabricated by the casting method. The structure of the synthesized ZCO NPs and ZCO PNCs was studied by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy techniques. The optical performance was characterized based on UV-visible-NIR data. The XRD investigations revealed the wurtzite structure of the ZCO NPs with a crystallite size of 17.8 nm. The FT-IR investigations confirmed the integration of ZCO NPs with the host blend’s structure. The optical analysis exposed that the direct and indirect band gap of the host blend decreased from 5.20 and 4.94 to 4.36 and 4.29 eV for 10 wt% of ZCO PNCs. The Urbach energy rose from 0.62 to 1.28 eV for 10 wt% of ZCO PNCs. The refractive index grew from 1.29 (bare blend) to 1.82 for 10 wt% of ZCO PNC at hν = 2.0 eV. In addition, a great enhancement in the non-linear optical constants was achieved via ZCO doping. The third-order non-linear susceptibility, χ (3), increased from 1.30 × 10−13 esu (bare) to 9.23 × 10−11 esu for 10 wt% of ZCO PNC at hν = 5.0 eV. We suggest these valuable achievements in the optical behavior of PVA/PVP/graphene blend by ZCO doping nominate it for applications in optical device improvement.
{"title":"Role of Cu/ZnO nanostructures doping on the optical behavior of polyvinyl alcohol/polyvinyl pyrrolidone/graphene composites for optoelectronic applications","authors":"M. G. Althobaiti, Ali Badawi","doi":"10.1080/00222348.2023.2256583","DOIUrl":"https://doi.org/10.1080/00222348.2023.2256583","url":null,"abstract":"Abstract The linear/non-linear optical and dielectric performance of PVA/PVP/graphene composites were enhanced by doping with Cu/ZnO (ZCO) nanoparticles (NPs) for optoelectronic applications. Bare and ZCO polymeric nanocomposites (PNCs) blends were fabricated by the casting method. The structure of the synthesized ZCO NPs and ZCO PNCs was studied by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy techniques. The optical performance was characterized based on UV-visible-NIR data. The XRD investigations revealed the wurtzite structure of the ZCO NPs with a crystallite size of 17.8 nm. The FT-IR investigations confirmed the integration of ZCO NPs with the host blend’s structure. The optical analysis exposed that the direct and indirect band gap of the host blend decreased from 5.20 and 4.94 to 4.36 and 4.29 eV for 10 wt% of ZCO PNCs. The Urbach energy rose from 0.62 to 1.28 eV for 10 wt% of ZCO PNCs. The refractive index grew from 1.29 (bare blend) to 1.82 for 10 wt% of ZCO PNC at hν = 2.0 eV. In addition, a great enhancement in the non-linear optical constants was achieved via ZCO doping. The third-order non-linear susceptibility, χ (3), increased from 1.30 × 10−13 esu (bare) to 9.23 × 10−11 esu for 10 wt% of ZCO PNC at hν = 5.0 eV. We suggest these valuable achievements in the optical behavior of PVA/PVP/graphene blend by ZCO doping nominate it for applications in optical device improvement.","PeriodicalId":16285,"journal":{"name":"Journal of Macromolecular Science, Part B","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136263361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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