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Synthesis of Urethane-Type Polymers with Polydimethylsiloxane Blocks for the Manufacture of Fibrous Matrices by Electrospinning
Polymer Science, Series B ( IF 1.2 ) Pub Date : 2020-09-10 , DOI: 10.1134/s1560090420040090
I. K. Shundrina , I. V. Oleinik , V. I. Pastukhov , L. A. Shundrin , V. S. Chernonosova , P. P. Laktionov

Abstract

A series of polyurethanes, polyureas, and poly(urethane ureas) with flexible blocks based on α,ω-bis(hydroxyalkyl)polydimethylsiloxane and α,ω-bis(aminopropyl)polydimethylsiloxane with molecular weights (5.6 and 0.9) × 103, respectively, is synthesized to obtain artificial vessels by electrospinning. The structure and properties of the polymers are characterized by gel permeation chromatography, differential scanning calorimetry, thermogravimetry, and dynamic mechanical analysis. It is found that polydimethylsiloxane segments in the polymer structure form their phase with a glass transition temperature characteristic of polydimethylsiloxane. The features of fiber spinning from solutions of the synthesized elastomers are studied. It is shown that the storage modulus of the polymers has a great influence on the morphology of the presented fibers.



中文翻译:

静电纺丝法合成具有聚二甲基硅氧烷嵌段的氨基甲酸酯型聚合物,用于制造纤维基质

摘要

基于α,ω-双(羟烷基)聚二甲基硅氧烷和α,ω-双(氨基丙基)聚二甲基硅氧烷的分子量为(5.6和0.9)×10 3的一系列具有柔性嵌段的聚氨酯,聚脲和聚(氨酯脲)分别通过静电纺丝法合成合成人工血管。聚合物的结构和性质通过凝胶渗透色谱,差示扫描量热法,热重分析和动态力学分析来表征。发现聚合物结构中的聚二甲基硅氧烷链段形成具有聚二甲基硅氧烷特征的玻璃化转变温度的相。研究了合成弹性体溶液中纤维纺丝的特性。结果表明,聚合物的储能模量对所提供的纤维的形态有很大的影响。

更新日期:2020-09-11
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