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New PBI Membranes Doped with Methyl-Imidazolium Triflate Protic Ionic Liquid 掺杂甲基咪唑三氟丙烯酸原离子液体的新型 PBI 膜
IF 1 4区 化学
Polymer Science, Series A Pub Date : 2024-07-10 DOI: 10.1134/S0965545X24600339
Y. A. Fadeeva, S. M. Kuzmin, L. E. Shmukler, L. P. Safonova
{"title":"New PBI Membranes Doped with Methyl-Imidazolium Triflate Protic Ionic Liquid","authors":"Y. A. Fadeeva,&nbsp;S. M. Kuzmin,&nbsp;L. E. Shmukler,&nbsp;L. P. Safonova","doi":"10.1134/S0965545X24600339","DOIUrl":"10.1134/S0965545X24600339","url":null,"abstract":"<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":"66 1","pages":"129 - 135"},"PeriodicalIF":1.0,"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}
引用次数: 0
Effect of Polypropylene Percentage on Morphological and Mechanical Properties of Polybutylene Terephthalate/Polypropylene Blends 聚丙烯比例对聚对苯二甲酸丁二醇酯/聚丙烯混合物形态和机械性能的影响
IF 1 4区 化学
Polymer Science, Series A Pub Date : 2024-07-10 DOI: 10.1134/S0965545X2460042X
Pham Thi Hong Nga,  Nguyen Thanh Tan
{"title":"Effect of Polypropylene Percentage on Morphological and Mechanical Properties of Polybutylene Terephthalate/Polypropylene Blends","authors":"Pham Thi Hong Nga,&nbsp; Nguyen Thanh Tan","doi":"10.1134/S0965545X2460042X","DOIUrl":"10.1134/S0965545X2460042X","url":null,"abstract":"<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":"66 1","pages":"86 - 94"},"PeriodicalIF":1.0,"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}
引用次数: 0
Carboxymethyl Guar Gum-Based Bioactive and Biodegradable Film for Food Packaging 用于食品包装的羧甲基瓜尔胶生物活性可降解薄膜
IF 1 4区 化学
Polymer Science, Series A Pub Date : 2024-07-10 DOI: 10.1134/S0965545X24600388
Tanvi Singh, Meenakshi Tanwar, Rajinder K. Gupta
{"title":"Carboxymethyl Guar Gum-Based Bioactive and Biodegradable Film for Food Packaging","authors":"Tanvi Singh,&nbsp;Meenakshi Tanwar,&nbsp;Rajinder K. Gupta","doi":"10.1134/S0965545X24600388","DOIUrl":"10.1134/S0965545X24600388","url":null,"abstract":"<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":"66 2","pages":"202 - 215"},"PeriodicalIF":1.0,"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}
引用次数: 0
Preparation and Properties of Environmentally Adaptable Polyacrylamide/Polyvinyl Alcohol Semi-Interpenetrating Highly Conductive Ion-Conducting Hydrogel 环境适应性聚丙烯酰胺/聚乙烯醇半互渗高导电离子导电水凝胶的制备及其特性
IF 1 4区 化学
Polymer Science, Series A Pub Date : 2024-07-10 DOI: 10.1134/S0965545X24600352
Xinmin Huang, Yaning Wang, Xiaobin Tan, Lianhe Yang
{"title":"Preparation and Properties of Environmentally Adaptable Polyacrylamide/Polyvinyl Alcohol Semi-Interpenetrating Highly Conductive Ion-Conducting Hydrogel","authors":"Xinmin Huang,&nbsp;Yaning Wang,&nbsp;Xiaobin Tan,&nbsp;Lianhe Yang","doi":"10.1134/S0965545X24600352","DOIUrl":"10.1134/S0965545X24600352","url":null,"abstract":"<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":"66 1","pages":"45 - 56"},"PeriodicalIF":1.0,"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}
引用次数: 0
Effect of Loading of Kapok Fiber with Epoxy on Mechanical and Electrical Properties of Its Composites 木棉纤维与环氧树脂的负载对其复合材料机械和电气性能的影响
IF 1 4区 化学
Polymer Science, Series A Pub Date : 2024-07-10 DOI: 10.1134/S0965545X23600692
Ramyaranjan Das, Chinmayee Dash, Dillip Kumar Bisoyi
{"title":"Effect of Loading of Kapok Fiber with Epoxy on Mechanical and Electrical Properties of Its Composites","authors":"Ramyaranjan Das,&nbsp;Chinmayee Dash,&nbsp;Dillip Kumar Bisoyi","doi":"10.1134/S0965545X23600692","DOIUrl":"10.1134/S0965545X23600692","url":null,"abstract":"<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":"66 1","pages":"103 - 112"},"PeriodicalIF":1.0,"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}
引用次数: 0
Hydrodynamic and Conformational Characteristics of Poly(N-vinyl succinimide) Macromolecules 聚（N-乙烯基琥珀酰亚胺）大分子的流体力学和构象特性
IF 1 4区 化学
Polymer Science, Series A Pub Date : 2024-07-10 DOI: 10.1134/S0965545X2460039X
A. A. Gosteva, O. V. Okatova, A. S. Gubarev, A. I. Gostev, E. V. Sivtsov, G. M. Pavlov
{"title":"Hydrodynamic and Conformational Characteristics of Poly(N-vinyl succinimide) Macromolecules","authors":"A. A. Gosteva,&nbsp;O. V. Okatova,&nbsp;A. S. Gubarev,&nbsp;A. I. Gostev,&nbsp;E. V. Sivtsov,&nbsp;G. M. Pavlov","doi":"10.1134/S0965545X2460039X","DOIUrl":"10.1134/S0965545X2460039X","url":null,"abstract":"<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":"66 1","pages":"1 - 4"},"PeriodicalIF":1.0,"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}
引用次数: 0
Cure, Mechanical, Swelling, Antimicrobial and Biodegradability Studies of Biocomposites of Acrylonitrile Butadiene Rubber and Chitosan 丙烯腈丁二烯橡胶和壳聚糖生物复合材料的固化、机械、膨胀、抗菌和生物降解性研究
IF 1 4区 化学
Polymer Science, Series A Pub Date : 2024-07-10 DOI: 10.1134/S0965545X24600327
P. Nusrath, P. Sajna, K. T. Ramlath, C. Rajesh
{"title":"Cure, Mechanical, Swelling, Antimicrobial and Biodegradability Studies of Biocomposites of Acrylonitrile Butadiene Rubber and Chitosan","authors":"P. Nusrath,&nbsp;P. Sajna,&nbsp;K. T. Ramlath,&nbsp;C. Rajesh","doi":"10.1134/S0965545X24600327","DOIUrl":"10.1134/S0965545X24600327","url":null,"abstract":"<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":"66 1","pages":"32 - 44"},"PeriodicalIF":1.0,"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}
引用次数: 0
Distribution of Filler in Polymer Composites. Role of Particle Size and Concentration 聚合物复合材料中填料的分布。粒度和浓度的作用
IF 1 4区 化学
Polymer Science, Series A Pub Date : 2024-07-10 DOI: 10.1134/S0965545X24600236
E. A. Pavlyuchkova, A. Ya. Malkin, Y. V. Kornev, I. D. Simonov-Emel’yanov
{"title":"Distribution of Filler in Polymer Composites. Role of Particle Size and Concentration","authors":"E. A. Pavlyuchkova,&nbsp;A. Ya. Malkin,&nbsp;Y. V. Kornev,&nbsp;I. D. Simonov-Emel’yanov","doi":"10.1134/S0965545X24600236","DOIUrl":"10.1134/S0965545X24600236","url":null,"abstract":"<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":"66 1","pages":"113 - 120"},"PeriodicalIF":1.0,"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}
引用次数: 0
Effect of Glycerol Content in Gelatin/Glycerol Composite Films Loaded with Erythromycin 载入红霉素的明胶/甘油复合薄膜中甘油含量的影响
IF 1 4区 化学
Polymer Science, Series A Pub Date : 2024-03-25 DOI: 10.1134/S0965545X23600357
Mitra Baghali, Hakimeh Ziyadi, Seeram Ramakrishna, Anna Chernova, Antonio Di Martino
{"title":"Effect of Glycerol Content in Gelatin/Glycerol Composite Films Loaded with Erythromycin","authors":"Mitra Baghali,&nbsp;Hakimeh Ziyadi,&nbsp;Seeram Ramakrishna,&nbsp;Anna Chernova,&nbsp;Antonio Di Martino","doi":"10.1134/S0965545X23600357","DOIUrl":"10.1134/S0965545X23600357","url":null,"abstract":"<p>Due to wide application of biomaterials in drug delivery systems for wound healing, this research work is focused on the development and characterization of a Gelatin/Glycerol composite film for delivering the antibiotic Erythromycin. The aim was preparing gelatin/glycerol films loaded with erythromycin suitable for a future application as a patch for skin wound healing application. A set of films were prepared with various gelatin to glycerol weight ratio and the impact of glycerol content on the mechanical, physicochemical and thermal behavior of film evaluated. Erythromycin was loaded into the film and the antibacterial activity evaluated versus <i>E.coli</i> and <i>S.aureus</i>. Results demonstrate a correlation between the content of glycerol and the physico-chemical properties of the film. The Ge/GY films containing the drug show good antibacterial effects only against <i>Staphylococcus aureus</i> bacteria. TGA and DSC of Ge/ GY thin films showed thermal stability until 110°C, however, the complete decomposition occurred at 350°C.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"65 6","pages":"714 - 724"},"PeriodicalIF":1.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140298872","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}
引用次数: 0
Fabrication of Dual-Functional Micelles Based on Star-Shaped Copolymer for Bioimaging 基于星形共聚物的生物成像双功能胶束的制备
IF 1 4区 化学
Polymer Science, Series A Pub Date : 2024-03-25 DOI: 10.1134/S0965545X24600169
Chaofan Liu, Shenglong Liao, Shuyin Zhong, Qingping Song, Jiangang Gao, Ying Lin
{"title":"Fabrication of Dual-Functional Micelles Based on Star-Shaped Copolymer for Bioimaging","authors":"Chaofan Liu,&nbsp;Shenglong Liao,&nbsp;Shuyin Zhong,&nbsp;Qingping Song,&nbsp;Jiangang Gao,&nbsp;Ying Lin","doi":"10.1134/S0965545X24600169","DOIUrl":"10.1134/S0965545X24600169","url":null,"abstract":"<p>Dual-modal fluorescent/magnetic resonance imaging attracts more and more attentions in biomedical applications. Herein, star-shaped poly(ε-caprolactone)-<i>b</i>-poly(<i>N</i>-vinylpyrrolidone) amphiphilic copolymer with a tetrakis-(4-amino)-terminated tetraphenylethylene core was synthesized. Then, dual-functional nano micelles were achieved via a facile self-assembly of the star copolymer and in situ encapsulation of iron oxide nanoparticles. The fluorescent characteristic of the tetraphenylethylene moiety and encapsulation of iron oxide endowed the resultant dual-functional micelles with bright fluorescence and superparamagnetic properties, which indicated that the PCL segments coated on magnetic nanoparticles is effective at separating the conjugated core from iron oxide nanoparticles to minimize fluorescence quenching. The obtained micelles were found to have a good colloidal and fluorescent stability in different environment. In vitro studies revealed that these dual-functional micelles could serve as an effective fluorescent probe to achieve imaging of MCF-7 cells without obvious cytotoxicity. Thus, this work provides a facile strategy to fabricate fluorescent-magnetic dual-functional micelles for dual-modal imaging applications.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":"65 6","pages":"692 - 701"},"PeriodicalIF":1.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140298940","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}
引用次数: 0
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