Pub Date : 2020-05-11DOI: 10.19080/ajop.2020.04.555627
Satyendra Mishra
Shape memory polymers (SMPs) are the new class of smart fascinating polymer materials with different potential applications. This research work aims to present systematic investigations of electrically actuated shape memory (EASM) properties at different electric voltage of epoxy polymer filled with 0.1 to 0.4 wt. % of Graphene (GO) to develop SMPs nanocomposites. EASM effect and surface morphology functional analysis of composites were observed after EASM characterization by Field Emission-Scanning Electron Microscopy (FE-SEM) and Fourier Transform Infrared Spectroscopy (FT-IR). 0.4 wt. % addition of GO showed highest shape recovery at 180 S, 140 S and 95 S for 40 V, 60 V and 80 V respectively. These results suggest that GO could be promising materials for electrically actuated shape memory applications.
形状记忆聚合物（SMPs）是一类具有不同应用潜力的新型智能聚合物材料。这项研究工作旨在对填充了 0.1 至 0.4 wt. % 石墨烯（GO）的环氧聚合物在不同电压下的电致形状记忆（EASM）特性进行系统研究，以开发 SMPs 纳米复合材料。通过场发射扫描电子显微镜（FE-SEM）和傅立叶变换红外光谱（FT-IR）对 EASM 表征后，观察了复合材料的 EASM 效应和表面形貌功能分析。在 40 V、60 V 和 80 V 条件下，添加 0.4 wt. % 的 GO 分别在 180 S、140 S 和 95 S 时显示出最高的形状恢复能力。这些结果表明，GO 有望成为电致动形状记忆应用的理想材料。
{"title":"Fast Triggered Controllable Electrically Actuated Shape Memory Epoxy: Graphene oxide Nanocomposites","authors":"Satyendra Mishra","doi":"10.19080/ajop.2020.04.555627","DOIUrl":"https://doi.org/10.19080/ajop.2020.04.555627","url":null,"abstract":"Shape memory polymers (SMPs) are the new class of smart fascinating polymer materials with different potential applications. This research work aims to present systematic investigations of electrically actuated shape memory (EASM) properties at different electric voltage of epoxy polymer filled with 0.1 to 0.4 wt. % of Graphene (GO) to develop SMPs nanocomposites. EASM effect and surface morphology functional analysis of composites were observed after EASM characterization by Field Emission-Scanning Electron Microscopy (FE-SEM) and Fourier Transform Infrared Spectroscopy (FT-IR). 0.4 wt. % addition of GO showed highest shape recovery at 180 S, 140 S and 95 S for 40 V, 60 V and 80 V respectively. These results suggest that GO could be promising materials for electrically actuated shape memory applications.","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":"14 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141205659","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 : 2020-05-06DOI: 10.19080/ajop.2020.04.555626
A. Al-Hussaini
A call for novel material, new ideas, applications, and techniques are still and will be challenging all the time. The increased development of science and modern technology allows one to use a high-throughput search for novel materials that could give positive feedback in different areas of life. With increasing demand for high performance materials, the focus of recent researches has been to produce products with enhanced properties at minimal changes in the equipment, process and cost of inputs. The addition of clay minerals or nano-metal oxides to the polymers is to improve the polymer properties, their wide and demand characteristics or desired potential applications by producing the polymer nanocomposites. Scanning and transmission electron microscopy have led to a deeper understanding of polymer nanocomposites, a better account surface topology, structure and morphology.
{"title":"Polymer Composite Materials from Current Status to Future Prospects","authors":"A. Al-Hussaini","doi":"10.19080/ajop.2020.04.555626","DOIUrl":"https://doi.org/10.19080/ajop.2020.04.555626","url":null,"abstract":"A call for novel material, new ideas, applications, and techniques are still and will be challenging all the time. The increased development of science and modern technology allows one to use a high-throughput search for novel materials that could give positive feedback in different areas of life. With increasing demand for high performance materials, the focus of recent researches has been to produce products with enhanced properties at minimal changes in the equipment, process and cost of inputs. The addition of clay minerals or nano-metal oxides to the polymers is to improve the polymer properties, their wide and demand characteristics or desired potential applications by producing the polymer nanocomposites. Scanning and transmission electron microscopy have led to a deeper understanding of polymer nanocomposites, a better account surface topology, structure and morphology.","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79214266","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 : 2020-02-18DOI: 10.19080/ajop.2021.04.555648
Radka Kopecká
This review presents poly(dimethylphosphazene) (PDMP), as the simplest representative of poly[(organo)phosphazenes], which was used as the additive into commercial polymer mixtures. This mixture was electrostatically spun. The formation and behaviours, such as wettability, of PDMP modified layers, were investigated.
{"title":"Nonwoven Polymeric Fabrics Modified by Poly(Dimethylphosphazene)","authors":"Radka Kopecká","doi":"10.19080/ajop.2021.04.555648","DOIUrl":"https://doi.org/10.19080/ajop.2021.04.555648","url":null,"abstract":"This review presents poly(dimethylphosphazene) (PDMP), as the simplest representative of poly[(organo)phosphazenes], which was used as the additive into commercial polymer mixtures. This mixture was electrostatically spun. The formation and behaviours, such as wettability, of PDMP modified layers, were investigated.","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83379012","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 : 2020-02-04DOI: 10.19080/ajop.2020.03.555621
Hua-yong Liao
The dynamic rheological behavior of a polymethylvinylsiloxane (PMVS)/ low density polyethylene (LDPE) blending melts at 150,180 and 210 ℃ is investigated by small amplitude oscillatory shear on a rotational rheometer. LDPE has higher viscosity than PMVS at three temperatures, which affects the morphology and rheological response of the blends. The LDPE-rich blends have smaller dispersed droplets and longer relaxation time than the PMVS-rich blends. Higher temperature means less viscosity as well as dynamic modulus difference between the LDPE-rich blend and the PMVS-rich blend. Increasing temperature fastens relaxation of polymer samples thus relaxation time at higher temperature is shorter than that at low temperature. Phase separation can be shown at some weight ratio of PMVS/LDPE through the failure of time-temperature superposition principle and double peaks of relaxation time including the form relaxation time peak due to relaxation of dispersed droplets.
{"title":"A Polymethylvinylsiloxane/Low Density Polyethylene Blending Melt: Dynamic Rheological Behavior and Relaxation Time","authors":"Hua-yong Liao","doi":"10.19080/ajop.2020.03.555621","DOIUrl":"https://doi.org/10.19080/ajop.2020.03.555621","url":null,"abstract":"The dynamic rheological behavior of a polymethylvinylsiloxane (PMVS)/ low density polyethylene (LDPE) blending melts at 150,180 and 210 ℃ is investigated by small amplitude oscillatory shear on a rotational rheometer. LDPE has higher viscosity than PMVS at three temperatures, which affects the morphology and rheological response of the blends. The LDPE-rich blends have smaller dispersed droplets and longer relaxation time than the PMVS-rich blends. Higher temperature means less viscosity as well as dynamic modulus difference between the LDPE-rich blend and the PMVS-rich blend. Increasing temperature fastens relaxation of polymer samples thus relaxation time at higher temperature is shorter than that at low temperature. Phase separation can be shown at some weight ratio of PMVS/LDPE through the failure of time-temperature superposition principle and double peaks of relaxation time including the form relaxation time peak due to relaxation of dispersed droplets.","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":"297 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75101718","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 : 2020-01-30DOI: 10.19080/ajop.2020.03.555620
Bin Yang
In this study, a brief review of the molecular dynamic’s simulations application in research of tribological properties of polymer composites were presented. To better classify and aggregate, particular attention is given to the frictional factor analysis and the enhancement of polymer composites on the tribological properties. The review of the latest research progress of the tribological research by molecular dynamics simulations and some proposals for further research may have implications for the relevant research and applications, which is practically meaningful and helpful for the related researchers to have a better understanding of this field.
{"title":"Aggregation on the Study of Tribological Properties of Polymer Composites: Molecular Dynamics Simulations","authors":"Bin Yang","doi":"10.19080/ajop.2020.03.555620","DOIUrl":"https://doi.org/10.19080/ajop.2020.03.555620","url":null,"abstract":"In this study, a brief review of the molecular dynamic’s simulations application in research of tribological properties of polymer composites were presented. To better classify and aggregate, particular attention is given to the frictional factor analysis and the enhancement of polymer composites on the tribological properties. The review of the latest research progress of the tribological research by molecular dynamics simulations and some proposals for further research may have implications for the relevant research and applications, which is practically meaningful and helpful for the related researchers to have a better understanding of this field.","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74290639","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 : 2020-01-08DOI: 10.19080/ajop.2020.03.555618
D. Feldman
Polyurethane is one of the most versatile polymers which stands out with a wide range of tunable properties such as chemical stability, flexibility, abrasion and scratch resistance, toughness and biodegradability. It is a unique polymer containing alternating soft and hard segments. This review covers the most recent (2018-2019) engineering research contributions done for the synthesis, properties and applications of the polyurethane foams, coatings, adhesives, sealants, elastomers, composites and insists on the important aspects and realizations related to the polyurethane flammability and acoustic. 2,2,3,3,4,: heptafluoro-butiric acid 2,2-bis-hydroxymethyl-butyl ester; HRR: Heat release rate; HPU: Hyper Branched Polyurethane; LMPET: Low Melting Polyester; LOI: Limited Oxygen Index; MW: Molecular Weight; PEG: Poly(ethylene glycol); PHRR: Peak Heat Release Rate; PPG: Poly (propylene glycol); POSS Polyhedral Oligomeric Silsequioxanes; PU: Polyurethane; PU FR: Polyurethane with FR; RO: Rape seed oil; SEM: Scanning Electron Microscopy; SPB: Soybean Oil Based Polyol; TEM: Transmission Electron microscopy; TGA: Thermo gravimetry analysis; THRR: Total heat release rate; THR: Total heat release; TPIA: Acylhydrazine; TPID: Disulfide bonds; TPU: Thermoplastic polyurethane; VOCs: Volatile organic compounds New biobased PU coatings with lignin were studied. A diisocyanate obtained from lignin-derived vanilic acid and crosslinked with three different nonchemically modified technical lignins namely mild acetone organosolv, kraft, and soda. The results of the research showed that the reaction of a lignin-derived biobased diisocyanate represent an interesting way for the production of TPU coating. The study also showed that the reaction of lignin-derived biobased diisocyanate
{"title":"Polyurethane: Recent Engineering Contributions","authors":"D. Feldman","doi":"10.19080/ajop.2020.03.555618","DOIUrl":"https://doi.org/10.19080/ajop.2020.03.555618","url":null,"abstract":"Polyurethane is one of the most versatile polymers which stands out with a wide range of tunable properties such as chemical stability, flexibility, abrasion and scratch resistance, toughness and biodegradability. It is a unique polymer containing alternating soft and hard segments. This review covers the most recent (2018-2019) engineering research contributions done for the synthesis, properties and applications of the polyurethane foams, coatings, adhesives, sealants, elastomers, composites and insists on the important aspects and realizations related to the polyurethane flammability and acoustic. 2,2,3,3,4,: heptafluoro-butiric acid 2,2-bis-hydroxymethyl-butyl ester; HRR: Heat release rate; HPU: Hyper Branched Polyurethane; LMPET: Low Melting Polyester; LOI: Limited Oxygen Index; MW: Molecular Weight; PEG: Poly(ethylene glycol); PHRR: Peak Heat Release Rate; PPG: Poly (propylene glycol); POSS Polyhedral Oligomeric Silsequioxanes; PU: Polyurethane; PU FR: Polyurethane with FR; RO: Rape seed oil; SEM: Scanning Electron Microscopy; SPB: Soybean Oil Based Polyol; TEM: Transmission Electron microscopy; TGA: Thermo gravimetry analysis; THRR: Total heat release rate; THR: Total heat release; TPIA: Acylhydrazine; TPID: Disulfide bonds; TPU: Thermoplastic polyurethane; VOCs: Volatile organic compounds New biobased PU coatings with lignin were studied. A diisocyanate obtained from lignin-derived vanilic acid and crosslinked with three different nonchemically modified technical lignins namely mild acetone organosolv, kraft, and soda. The results of the research showed that the reaction of a lignin-derived biobased diisocyanate represent an interesting way for the production of TPU coating. The study also showed that the reaction of lignin-derived biobased diisocyanate","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86538215","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 : 2019-12-17DOI: 10.19080/ajop.2019.03.555617
Larin Av
Studies of the elution dynamics of adsorption have revealed a close correspondence between the analytical solutions to (i) a direct problem formulated using an equilibrium adsorption layer model and (ii) an inverse problem formulated using the method of moments.
{"title":"Elution Dynamics of Adsorption: Comparing the Solutions of Direct and Inverse Problems","authors":"Larin Av","doi":"10.19080/ajop.2019.03.555617","DOIUrl":"https://doi.org/10.19080/ajop.2019.03.555617","url":null,"abstract":"Studies of the elution dynamics of adsorption have revealed a close correspondence between the analytical solutions to (i) a direct problem formulated using an equilibrium adsorption layer model and (ii) an inverse problem formulated using the method of moments.","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80938160","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 : 2019-12-10DOI: 10.19080/ajop.2019.03.555616
I. Khudyakov
The mini-review is devoted to the recent investigation the role of cage effect during photopolymerization. Benzophenone was selected as a photoinitiator of polymerization.
本文对笼效应在光聚合中的作用进行了综述。选择二苯甲酮作为聚合的光引发剂。
{"title":"Excited Triplet States of Organic Molecules and Reactive Free Radicals in Polymers","authors":"I. Khudyakov","doi":"10.19080/ajop.2019.03.555616","DOIUrl":"https://doi.org/10.19080/ajop.2019.03.555616","url":null,"abstract":"The mini-review is devoted to the recent investigation the role of cage effect during photopolymerization. Benzophenone was selected as a photoinitiator of polymerization.","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77060033","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 : 2019-12-02DOI: 10.19080/ajop.2019.03.555613
Kodolov Vi
Mechanism of mesoparticles modification reactions are considered with the application of such notions as charges quantization, phase coherence, interference and annihilation. On the base of theoretical Mesoscopics ideas the formation of covalent bonds because of the interference of negative charges quants in modification reactions is discussed. The hypothesis about possibility of annihilation at the interaction of positive and negative charges quants in redox processes is presented. The magnetic metal carbon mesoscopic composites synthesis (for example, initial metal carbon Mesocomposites) is realized by mechanochemical method at the grinding of metal oxides microscopic particles with polyvinyl alcohol macromolecules. Then in the result the Copper or Nickel Carbon mesocomposites which have the following atomic magnetic moments: for Copper – 1,3 μB, for Nickel – 1,8 μB are obtained. The investigations are carried out on the analysis examples of processes of Copper and Nickel Carbon mesoparticles modification by the compounds containing p, d elements. In the middle of its such substances as polyethylene polyamine, ammonium iodide, ammonium polyphosphate (APP), silica (SiO 2 ), aluminum oxide, iron oxide, nickel oxide and copper oxide are used. It’s noted that the red ox processes are accompanied by the metal atomic magnetic moments growth, that is explained by the electron shift on high energetic levels because of the annihilation phenomenon. The hypothesis concerning to the passing of two phenomena (annihilation and interference) at redox processes is proposed.
{"title":"The Explanation of Magnetic Metal Carbon Mesocomposites Synthesis Peculiarities by Means of Mesoscopics Notions","authors":"Kodolov Vi","doi":"10.19080/ajop.2019.03.555613","DOIUrl":"https://doi.org/10.19080/ajop.2019.03.555613","url":null,"abstract":"Mechanism of mesoparticles modification reactions are considered with the application of such notions as charges quantization, phase coherence, interference and annihilation. On the base of theoretical Mesoscopics ideas the formation of covalent bonds because of the interference of negative charges quants in modification reactions is discussed. The hypothesis about possibility of annihilation at the interaction of positive and negative charges quants in redox processes is presented. The magnetic metal carbon mesoscopic composites synthesis (for example, initial metal carbon Mesocomposites) is realized by mechanochemical method at the grinding of metal oxides microscopic particles with polyvinyl alcohol macromolecules. Then in the result the Copper or Nickel Carbon mesocomposites which have the following atomic magnetic moments: for Copper – 1,3 μB, for Nickel – 1,8 μB are obtained. The investigations are carried out on the analysis examples of processes of Copper and Nickel Carbon mesoparticles modification by the compounds containing p, d elements. In the middle of its such substances as polyethylene polyamine, ammonium iodide, ammonium polyphosphate (APP), silica (SiO 2 ), aluminum oxide, iron oxide, nickel oxide and copper oxide are used. It’s noted that the red ox processes are accompanied by the metal atomic magnetic moments growth, that is explained by the electron shift on high energetic levels because of the annihilation phenomenon. The hypothesis concerning to the passing of two phenomena (annihilation and interference) at redox processes is proposed.","PeriodicalId":6991,"journal":{"name":"Academic Journal of Polymer Science","volume":"74 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80895381","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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