Abstract

Controlled atom-transfer radical polymerization and ring-opening polymerization methods are used for the first time to synthesize symmetric pentablock copolymers with a central block, which is a polymer brush with the polyimide backbone and poly(methyl methacrylate) side chains, and outer linear block copolymers of poly(ε-caprolactone) with poly(methyl methacrylate). The chemical structure of the polymers is studied by ¹H NMR spectroscopy. The molecular weight characteristics of the synthesized pentablock copolymers are determined by multidetector size exclusion liquid chromatography. It is shown that these characteristics are in good agreement with the absolute molecular weights obtained by sedimentation-diffusion analysis.

中文翻译：

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通过控制的自由基聚合和开环聚合反应合成混合线性刷型五嵌段共聚物

抽象的

首次使用受控的原子转移自由基聚合和开环聚合方法来合成具有中心嵌段的对称五嵌段共聚物，该中心嵌段是具有聚酰亚胺主链和聚甲基丙烯酸甲酯侧链以及外部线性嵌段的聚合物刷聚ε-己内酯与聚甲基丙烯酸甲酯的共聚物。通过¹ H NMR光谱研究聚合物的化学结构。合成的五嵌段共聚物的分子量特征通过多检测器尺寸排阻液相色谱法测定。结果表明，这些特性与通过沉降-扩散分析获得的绝对分子量非常吻合。