Pub Date : 2024-07-10DOI: 10.1134/s0965545x24600261
M. M. Gasymov, T. I. Medintseva, S. Z. Rogovina, O. P. Kuznetsova, A. V. Shapagin, A. A. Berlin
Abstract
Filled composites of low-density polyethylene with nanocarbon fillers, namely, graphite nanoplates and reduced graphene oxide, of various compositions, are obtained in a solid phase under shear deformations in a rotary disperser. A difference in the structure of the obtained nanocomposites is demonstrated using scanning electron microscopy. A comparative study of the mechanical properties, porosity, and rheological behavior of the composites is carried out. It is revealed that the nature of graphene nanofillers and the composition of blends influence the characteristics of the resulting materials.
{"title":"A Comparative Study of the Mechanical and Rheological Properties of LDPE Composites with Various Nanocarbon Fillers","authors":"M. M. Gasymov, T. I. Medintseva, S. Z. Rogovina, O. P. Kuznetsova, A. V. Shapagin, A. A. Berlin","doi":"10.1134/s0965545x24600261","DOIUrl":"https://doi.org/10.1134/s0965545x24600261","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Filled composites of low-density polyethylene with nanocarbon fillers, namely, graphite nanoplates and reduced graphene oxide, of various compositions, are obtained in a solid phase under shear deformations in a rotary disperser. A difference in the structure of the obtained nanocomposites is demonstrated using scanning electron microscopy. A comparative study of the mechanical properties, porosity, and rheological behavior of the composites is carried out. It is revealed that the nature of graphene nanofillers and the composition of blends influence the characteristics of the resulting materials.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-10DOI: 10.1134/s0965545x24600418
T. S. Yankova, N. A. Chumakova, P. M. Nedorezova, O. M. Palaznik, A. I. Kokorin
Abstract
Mobility of a spin probe, 2,2,6,6-tetramethylpiperidine-1-oxyl, in the nanocomposites of isotactic polypropylene with single-wall carbon nanotubes has been studied. The nanotubes content has been varied from 1.2 to 38.5 wt %. The sample of pure polypropylene and these with content of nanotubes below 8% performed similar rotational mobility of the spin probe within the examined temperature range (from 105 to 405 K). This fact has evidenced the spin probes localization in the bulk of the polymer chains, not in direct contact with the carrier. The sample with the highest doping degree (38.5% of nanotubes) has demonstrated the spin probes agglomeration and their reduced rotational mobility, likely related to larger volume fraction of the interfacial areas of the polymer in the vicinity of the nanotubes. It can be concluded that the mobility of the polymer near the nanotubes is significantly reduced.
{"title":"Behavior of Spin Probe TEMPO in Composites Based on Polypropylene with Different Content of Single-Wall Carbon Nanotubes","authors":"T. S. Yankova, N. A. Chumakova, P. M. Nedorezova, O. M. Palaznik, A. I. Kokorin","doi":"10.1134/s0965545x24600418","DOIUrl":"https://doi.org/10.1134/s0965545x24600418","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Mobility of a spin probe, 2,2,6,6-tetramethylpiperidine-1-oxyl, in the nanocomposites of isotactic polypropylene with single-wall carbon nanotubes has been studied. The nanotubes content has been varied from 1.2 to 38.5 wt %. The sample of pure polypropylene and these with content of nanotubes below 8% performed similar rotational mobility of the spin probe within the examined temperature range (from 105 to 405 K). This fact has evidenced the spin probes localization in the bulk of the polymer chains, not in direct contact with the carrier. The sample with the highest doping degree (38.5% of nanotubes) has demonstrated the spin probes agglomeration and their reduced rotational mobility, likely related to larger volume fraction of the interfacial areas of the polymer in the vicinity of the nanotubes. It can be concluded that the mobility of the polymer near the nanotubes is significantly reduced.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-10DOI: 10.1134/s0965545x24600339
Y. A. Fadeeva, S. M. Kuzmin, L. E. Shmukler, L. P. Safonova
Abstract
In this study, new proton conducting membranes were prepared using poly-2,2'-(m-phenylene)-5,5'-bibenzimidazole (PBI) and varying amounts of methylimidazoliumtriflate[MeIm/TfO], a protic ionic liquid, by the solution casting method. The thermal properties and conductivity of these membranes were investigated. The obtained parameters, such as high thermal stability (235–255°C) and the conductivity of 0.7–1.6 mS/cm at 145°C, indicate that PBI membranes doped with either MeIm/TfO or BuIm/TfO, which were previously studied by our group, are quite interesting for further investigation as potential electrolytes for PEMFCs.
{"title":"New PBI Membranes Doped with Methyl-Imidazolium Triflate Protic Ionic Liquid","authors":"Y. A. Fadeeva, S. M. Kuzmin, L. E. Shmukler, L. P. Safonova","doi":"10.1134/s0965545x24600339","DOIUrl":"https://doi.org/10.1134/s0965545x24600339","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In this study, new proton conducting membranes were prepared using poly-2,2'-(<i>m</i>-phenylene)-5,5'-bibenzimidazole (PBI) and varying amounts of methylimidazoliumtriflate[MeIm/TfO], a protic ionic liquid, by the solution casting method. The thermal properties and conductivity of these membranes were investigated. The obtained parameters, such as high thermal stability (235–255°C) and the conductivity of 0.7–1.6 mS/cm at 145°C, indicate that PBI membranes doped with either MeIm/TfO or BuIm/TfO, which were previously studied by our group, are quite interesting for further investigation as potential electrolytes for PEMFCs.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-10DOI: 10.1134/s0965545x2460042x
Pham Thi Hong Nga, Nguyen Thanh Tan
Abstract
Polybutylene terephthalate (PBT) has a strong resistance to abrasion, deformation, and chemical resistance. However, how to further improve the impact toughness of PBT is still an issue that receives the attention of many researchers. This investigation aims to enhance its mechanical properties by mixing it with polypropylene (PP). The tensile strength, impact strength, flexural strength, and microstructure are accorded to ASTM D638, ASTM D256, and ASTM D790. In this analysis, PP was mixed with PBT with different ratios of 95/5, 90/10, 85/15, 80/20, and 75/25. Use injection molding technique to mold specimens for mechanical testing. The results show that the impact strength is 3.7, 6.6, 5.63, 5.2, 5.1, and 4.9 kJ/m2, corresponding to 0, 5, 10, 15, 20, and 25% PP. The impact strength of PBT/PP blends is higher than neat PBT. Especially in the 5% PP sample, the impact strength increase can reach the highest level of 80.3% compared to neat PBT. The flexural strength tends to decrease with increasing PP content. After measuring, we get 77.9, 65.6, 62.2, 58.4, 58.2, and 54.0 MPa, corresponding to 0, 5, 10, 15, 20, and 25% PP. The microstructure of the blends showed that spherical PP particles were interwoven into the PBT substrate, but no interphase adhesion was observed. In general, selecting a suitable PBT/PP blend could improve the impact strength while preserving the tensile strength, allowing it to be applied widely.
{"title":"Effect of Polypropylene Percentage on Morphological and Mechanical Properties of Polybutylene Terephthalate/Polypropylene Blends","authors":"Pham Thi Hong Nga, Nguyen Thanh Tan","doi":"10.1134/s0965545x2460042x","DOIUrl":"https://doi.org/10.1134/s0965545x2460042x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Polybutylene terephthalate (PBT) has a strong resistance to abrasion, deformation, and chemical resistance. However, how to further improve the impact toughness of PBT is still an issue that receives the attention of many researchers. This investigation aims to enhance its mechanical properties by mixing it with polypropylene (PP). The tensile strength, impact strength, flexural strength, and microstructure are accorded to ASTM D638, ASTM D256, and ASTM D790. In this analysis, PP was mixed with PBT with different ratios of 95/5, 90/10, 85/15, 80/20, and 75/25. Use injection molding technique to mold specimens for mechanical testing. The results show that the impact strength is 3.7, 6.6, 5.63, 5.2, 5.1, and 4.9 kJ/m<sup>2</sup>, corresponding to 0, 5, 10, 15, 20, and 25% PP. The impact strength of PBT/PP blends is higher than neat PBT. Especially in the 5% PP sample, the impact strength increase can reach the highest level of 80.3% compared to neat PBT. The flexural strength tends to decrease with increasing PP content. After measuring, we get 77.9, 65.6, 62.2, 58.4, 58.2, and 54.0 MPa, corresponding to 0, 5, 10, 15, 20, and 25% PP. The microstructure of the blends showed that spherical PP particles were interwoven into the PBT substrate, but no interphase adhesion was observed. In general, selecting a suitable PBT/PP blend could improve the impact strength while preserving the tensile strength, allowing it to be applied widely.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-10DOI: 10.1134/s0965545x24600388
Tanvi Singh, Meenakshi Tanwar, Rajinder K. Gupta
Abstract
The study aimed to synthesize ascorbic acid (AA) loaded carboxymethyl guar gum (CMG) hydrogel based film cross linked by citric acid (CA). Bioactive films (CMG-CA and CMG-CA-AA) were synthesized by solvent casting method. The flexibility and mechanical strength of the bioactive film (CMG-CA-AA) were enhanced by the addition of glycerol and optimized by analyzing tensile strength. The structural, morphological and thermal analysis was done by FTIR, XRD, SEM and TGA. Further, the films were evaluated for its anti-oxidant, anti-microbial property and cytotoxicity. Barrier properties, biodegradability and fruit shelf life-enhancer capability were also assessed. The outcomes of the testings demonstrated favorable results and confirms the potential of CMG-CA-AA film in food packaging.
{"title":"Carboxymethyl Guar Gum-Based Bioactive and Biodegradable Film for Food Packaging","authors":"Tanvi Singh, Meenakshi Tanwar, Rajinder K. Gupta","doi":"10.1134/s0965545x24600388","DOIUrl":"https://doi.org/10.1134/s0965545x24600388","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The study aimed to synthesize ascorbic acid (AA) loaded carboxymethyl guar gum (CMG) hydrogel based film cross linked by citric acid (CA). Bioactive films (CMG-CA and CMG-CA-AA) were synthesized by solvent casting method. The flexibility and mechanical strength of the bioactive film (CMG-CA-AA) were enhanced by the addition of glycerol and optimized by analyzing tensile strength. The structural, morphological and thermal analysis was done by FTIR, XRD, SEM and TGA. Further, the films were evaluated for its anti-oxidant, anti-microbial property and cytotoxicity. Barrier properties, biodegradability and fruit shelf life-enhancer capability were also assessed. The outcomes of the testings demonstrated favorable results and confirms the potential of CMG-CA-AA film in food packaging.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141585830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-10DOI: 10.1134/s0965545x24600352
Xinmin Huang, Yaning Wang, Xiaobin Tan, Lianhe Yang
Abstract
Ionically conductive hydrogels have attracted increasing interest as skin-like sensors, however, it remains a challenge to fabricate ionically conductive hydrogels with excellent mechanical properties, high electrical conductivity, and high environmental adaptability for high-performance sensors. In this paper, LiCl was introduced into polyacrylamide/linear polyvinyl alcohol (PAM/PVA) composite hydrogels to prepare hydrogels with high ion conductivity. The introduction of LiCl endows the PAM/PVA/LiCl hydrogel with excellent stretchability, high electrical conductivity, good freezing resistance and water retention, and a wide working temperature range. Impressively, this ion-conducting hydrogel can be used for skin-like sensors with high strain sensitivity and excellent durability over 10 consecutive stretches. Therefore, wearable sensors assembled from hydrogels can be used to detect complex human activities with high stability even at –20°C. This work facilitates the development of ionically conductive hydrogels with wide operating temperatures on advanced sensing platforms.
{"title":"Preparation and Properties of Environmentally Adaptable Polyacrylamide/Polyvinyl Alcohol Semi-Interpenetrating Highly Conductive Ion-Conducting Hydrogel","authors":"Xinmin Huang, Yaning Wang, Xiaobin Tan, Lianhe Yang","doi":"10.1134/s0965545x24600352","DOIUrl":"https://doi.org/10.1134/s0965545x24600352","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Ionically conductive hydrogels have attracted increasing interest as skin-like sensors, however, it remains a challenge to fabricate ionically conductive hydrogels with excellent mechanical properties, high electrical conductivity, and high environmental adaptability for high-performance sensors. In this paper, LiCl was introduced into polyacrylamide/linear polyvinyl alcohol (PAM/PVA) composite hydrogels to prepare hydrogels with high ion conductivity. The introduction of LiCl endows the PAM/PVA/LiCl hydrogel with excellent stretchability, high electrical conductivity, good freezing resistance and water retention, and a wide working temperature range. Impressively, this ion-conducting hydrogel can be used for skin-like sensors with high strain sensitivity and excellent durability over 10 consecutive stretches. Therefore, wearable sensors assembled from hydrogels can be used to detect complex human activities with high stability even at –20°C. This work facilitates the development of ionically conductive hydrogels with wide operating temperatures on advanced sensing platforms.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the present study, an attempt has been made to fabricate kapok fiber-reinforced epoxy composites using the hand lay-up method at 0, 1, 2, 3, 4, 5, 6, and 7 wt % fiber loading. Subsequently, the electrical and mechanical properties of the composites are characterized. It is observed that the mechanical and electrical properties of the composite significantly increase upon the incorporation of kapok fiber with the epoxy matrix. Particularly at 5 wt % loading of the fiber, the optimum properties of the composites were observed. A field emission scanning electron microscope (FESEM) investigation was carried out to observe the fracture behavior of the composites at the interface. 5% kapok fiber reinforced composite has better adhesion and the least fiber pull-out at the interface during mechanical loading. Additionally, it was observed that the dielectric constant of the composite increases with the increase in fiber content and simultaneously, decreases with an increase in frequency.
{"title":"Effect of Loading of Kapok Fiber with Epoxy on Mechanical and Electrical Properties of Its Composites","authors":"Ramyaranjan Das, Chinmayee Dash, Dillip Kumar Bisoyi","doi":"10.1134/s0965545x23600692","DOIUrl":"https://doi.org/10.1134/s0965545x23600692","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In the present study, an attempt has been made to fabricate kapok fiber-reinforced epoxy composites using the hand lay-up method at 0, 1, 2, 3, 4, 5, 6, and 7 wt % fiber loading. Subsequently, the electrical and mechanical properties of the composites are characterized. It is observed that the mechanical and electrical properties of the composite significantly increase upon the incorporation of kapok fiber with the epoxy matrix. Particularly at 5 wt % loading of the fiber, the optimum properties of the composites were observed. A field emission scanning electron microscope (FESEM) investigation was carried out to observe the fracture behavior of the composites at the interface. 5% kapok fiber reinforced composite has better adhesion and the least fiber pull-out at the interface during mechanical loading. Additionally, it was observed that the dielectric constant of the composite increases with the increase in fiber content and simultaneously, decreases with an increase in frequency.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141585831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-10DOI: 10.1134/s0965545x2460039x
A. A. Gosteva, O. V. Okatova, A. S. Gubarev, A. I. Gostev, E. V. Sivtsov, G. M. Pavlov
Abstract
Poly(N-vinyl succinimides) synthesized by classical radical polymerization are studied by the methods of molecular hydrodynamics in dilute solutions in dimethylformamide within a 40-fold MM range. The molecular characteristics and scaling ratios of poly(N-vinyl succinimide) molecules are determined, and their equilibrium rigidity is estimated.
摘要 采用分子流体力学方法，研究了经典自由基聚合法合成的聚(N-乙烯基琥珀酰亚胺)在二甲基甲酰胺稀溶液中的 40 倍 MM 范围。确定了聚（N-乙烯基琥珀酰亚胺）分子的分子特性和缩放比，并估算了其平衡刚性。
{"title":"Hydrodynamic and Conformational Characteristics of Poly(N-vinyl succinimide) Macromolecules","authors":"A. A. Gosteva, O. V. Okatova, A. S. Gubarev, A. I. Gostev, E. V. Sivtsov, G. M. Pavlov","doi":"10.1134/s0965545x2460039x","DOIUrl":"https://doi.org/10.1134/s0965545x2460039x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Poly(<i>N</i>-vinyl succinimides) synthesized by classical radical polymerization are studied by the methods of molecular hydrodynamics in dilute solutions in dimethylformamide within a 40-fold MM range. The molecular characteristics and scaling ratios of poly(<i>N</i>-vinyl succinimide) molecules are determined, and their equilibrium rigidity is estimated.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-10DOI: 10.1134/s0965545x24600236
E. A. Pavlyuchkova, A. Ya. Malkin, Y. V. Kornev, I. D. Simonov-Emel’yanov
Abstract
The spatial distribution of filler particles and their agglomeration depending on concentration and size was studied. In all cases, silica particles served as filler. The particle size varied over a wide range, from nanoparticles to glass beads, and therefore the filler particles have the same nature. An amorphous polymer (polysulfone) and a crystallizing polymer (polypropylene) were chosen as a matrix for comparison. The filler concentration over the cross-section of the samples was determined visually and by electronic chemical analysis. It was shown that with increasing particle size, the tendency to redistribute the concentration increases in such a way that the near-wall region becomes depleted of filler. This effect is more pronounced for high filler concentrations and for a crystallizing polymer compared to an amorphous one.
{"title":"Distribution of Filler in Polymer Composites. Role of Particle Size and Concentration","authors":"E. A. Pavlyuchkova, A. Ya. Malkin, Y. V. Kornev, I. D. Simonov-Emel’yanov","doi":"10.1134/s0965545x24600236","DOIUrl":"https://doi.org/10.1134/s0965545x24600236","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The spatial distribution of filler particles and their agglomeration depending on concentration and size was studied. In all cases, silica particles served as filler. The particle size varied over a wide range, from nanoparticles to glass beads, and therefore the filler particles have the same nature. An amorphous polymer (polysulfone) and a crystallizing polymer (polypropylene) were chosen as a matrix for comparison. The filler concentration over the cross-section of the samples was determined visually and by electronic chemical analysis. It was shown that with increasing particle size, the tendency to redistribute the concentration increases in such a way that the near-wall region becomes depleted of filler. This effect is more pronounced for high filler concentrations and for a crystallizing polymer compared to an amorphous one.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-10DOI: 10.1134/s0965545x24600327
P. Nusrath, P. Sajna, K. T. Ramlath, C. Rajesh
Abstract
Bio composites of acrylonitrile butadiene rubber (NBR) reinforced with chitosan were prepared using dicumyl peroxide (DCP) as a curing agent. Composites with two types of chitosan with different degrees of deacetylation (DD) were studied i.e., Chitosan with 85% DD and 75% DD. The cure characteristics of composites were studied. The mechanical properties of NBR were found to be improved by the incorporation of chitosan. The composite containing 20 phr chitosan has the best balance of mechanical properties. The swelling behavior of the composites in non-polar solvents such as petrol, diesel, kerosene, toluene, and hexane were analyzed for the swelling coefficient values which supports the results of mechanical properties. Antimicrobial properties of the composites were studied by inoculating the composites with Aspergillus niger (A. niger) fungus on a potato dextrose agar media and incubated for 60 days at room temperature. It is found that presence of chitosan resist the microbial action on the composite samples compared to the gum sample. It is believed that the outcome obtained from the present study is to develop environment-friendly composites for various applications such as oil seals, hoses, automobile bushes, etc.
{"title":"Cure, Mechanical, Swelling, Antimicrobial and Biodegradability Studies of Biocomposites of Acrylonitrile Butadiene Rubber and Chitosan","authors":"P. Nusrath, P. Sajna, K. T. Ramlath, C. Rajesh","doi":"10.1134/s0965545x24600327","DOIUrl":"https://doi.org/10.1134/s0965545x24600327","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Bio composites of acrylonitrile butadiene rubber (NBR) reinforced with chitosan were prepared using dicumyl peroxide (DCP) as a curing agent. Composites with two types of chitosan with different degrees of deacetylation (DD) were studied i.e., Chitosan with 85% DD and 75% DD. The cure characteristics of composites were studied. The mechanical properties of NBR were found to be improved by the incorporation of chitosan. The composite containing 20 phr chitosan has the best balance of mechanical properties. The swelling behavior of the composites in non-polar solvents such as petrol, diesel, kerosene, toluene, and hexane were analyzed for the swelling coefficient values which supports the results of mechanical properties. Antimicrobial properties of the composites were studied by inoculating the composites with <i>Aspergillus niger</i> (<i>A. niger</i>) fungus on a potato dextrose agar media and incubated for 60 days at room temperature. It is found that presence of chitosan resist the microbial action on the composite samples compared to the gum sample. It is believed that the outcome obtained from the present study is to develop environment-friendly composites for various applications such as oil seals, hoses, automobile bushes, etc.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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