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Influence of Macromolecular Brushes with Polyimide Backbones and Poly(methyl methacrylate) Side Chains on Structure, Physical, and Transport Properties of Polyphthalamide
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2019-11-27 , DOI: 10.1002/pen.25303
Nadezhda S. Tian 1 , Tamara K. Meleshko 1 , Galina A. Polotskaya 1, 2 , Iosif V. Gofman 1 , Anna V. Kashina 1 , Nina V. Kukarkina 1 , Elena N. Vlasova 1 , Zoolsho F. Zoolshoev 1 , Alexander V. Yakimansky 1, 2
Affiliation  

Composite films based on polyamide (poly(m‐phenylene‐iso‐phthalamide)) (PA) and a brush‐like polymer with polyimide (PI) backbone and side poly(methyl methacrylate) chains (PI‐PMMA) were prepared by mixing individual solutions of PA and PI‐PMMA and subsequent film casting. Macromolecular brushes with the same backbone length and density of side chains but with various lengths of side PMMA chains were synthesized via activator generated by electron transfer atom transfer radical polymerization. Interactions between PA and PI‐PMMA, as well as distribution of PI‐PMMA filler inside the PA matrix, were studied by viscometry, dynamic light scattering, differential scanning calorimetry, scanning electron microscopy, and IR spectroscopy. The mechanical properties of polymer samples were also investigated. Microphase separation was revealed in PA/PI‐PMMA films. The length of side chains influences interactions between PA and PI‐PMMA. At the same time, the degree of reduction in the rigidity parameters and in the elasticity parameter depends on the side chain length. Diffusion membranes were prepared on the basis of compositions with the best mechanical properties; these membranes proved to be highly efficient in pervaporation of methanol–hexane mixture. It was established that the fluxes and separation factors of the studied membranes are several times higher as compared to the corresponding characteristics of known commercial membranes. POLYM. ENG. SCI., 60:481–490, 2020. © 2019 Society of Plastics Engineers

中文翻译:

具有聚酰亚胺主链和聚甲基丙烯酸甲酯侧链的大分子刷对聚邻苯二甲酰胺的结构,物理和传输性能的影响

将聚酰胺(聚(间苯二甲酰间苯二甲酰胺))(PA)和具有聚酰亚胺(PI)主链和侧聚(甲基丙烯酸甲酯)侧链(PI-PMMA)的刷状聚合物制成的复合膜PA和PI‐PMMA的解决方案以及后续的薄膜浇铸。通过电子转移原子转移自由基聚合反应生成的活化剂合成了具有相同主链长度和侧链密度,但具有不同长度的PMMA侧链的大分子刷。通过粘度测定,动态光散射,差示扫描量热法,扫描电子显微镜和红外光谱研究了PA和PI-PMMA之间的相互作用以及PI-PMMA填料在PA基质中的分布。还研究了聚合物样品的机械性能。在PA / PI-PMMA膜中发现了微相分离。侧链的长度影响PA和PI‐PMMA之间的相互作用。同时,刚性参数和弹性参数的减小程度取决于侧链长度。扩散膜是根据具有最佳机械性能的组合物制备的;这些膜被证明在甲醇-己烷混合物的全蒸发中非常有效。已经确定,所研究的膜的通量和分离因子比已知的商业膜的相应特性高几倍。POLYM。ENG。SCI。,60:481–490,2020.©2019塑料工程师协会 刚性参数和弹性参数的减小程度取决于侧链长度。扩散膜是根据具有最佳机械性能的组合物制备的;这些膜被证明在甲醇-己烷混合物的全蒸发中非常有效。已经确定,所研究的膜的通量和分离因子比已知的商业膜的相应特性高几倍。POLYM。ENG。SCI。,60:481–490,2020.©2019塑料工程师协会 刚性参数和弹性参数的减小程度取决于侧链长度。扩散膜是根据具有最佳机械性能的组合物制备的;这些膜被证明在甲醇-己烷混合物的全蒸发中非常有效。已经确定,所研究的膜的通量和分离因子比已知的商业膜的相应特性高几倍。POLYM。ENG。SCI。,60:481–490,2020.©2019塑料工程师协会 已经确定,所研究的膜的通量和分离因子比已知的商业膜的相应特性高几倍。POLYM。ENG。SCI。,60:481–490,2020.©2019塑料工程师协会 已经确定,所研究的膜的通量和分离因子比已知的商业膜的相应特性高几倍。POLYM。ENG。SCI。,60:481–490,2020.©2019塑料工程师协会
更新日期:2019-11-27
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