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首页> 外文期刊>RSC Advances >The synthesis and characterization of a processable polyrotaxane-based triblock copolymer via a 'two steps' strategy
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The synthesis and characterization of a processable polyrotaxane-based triblock copolymer via a 'two steps' strategy

机译：通过“两个步骤”策略的可加工聚甲烷基三嵌段共聚物的合成与表征

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摘要

A polyrotaxane based triblock copolymer (PR copolymer) was synthesized successfully via a "two steps" strategy. In the first step, a PR macroinitiator was synthesized by end-capping of an adamantane stopper (AD stopper). In second step, the PR copolymer was prepared via atom transfer radical polymerization (ATRP) with a PR macroinitiator. Furthermore, it was found the cyclodextrin (CD) content in the PR macroinitiator was controllable in the first step, whereas the degree of polymerization (DP) of butylmethacrylate (BMA) also appeared tunable in the second step. Moreover, the PR copolymer was processed into a self-standing film via solution casting and a nonwoven mat with good morphology via electrospinning. The strain-stress test showed the film had a higher tensile strength than universal plastics, and pure PBMA and dynamic mechanical analyzer results inferred that the movement of the PR block may be also present in the PR copolymer and have some influence on the copolymer's mechanical properties. In conclusion, the controllability of CD content and polymer chain length provide enough room to modify its molecular structure so as to design and synthesize different PR copolymers with various properties and broaden their application field from solution and hydrogels to the solid state.
机译：的聚轮烷的基于三嵌段共聚物（PR共聚物）通过“两步”的策略成功地合成。在第一步骤，一个PR大分子引发剂是由封端的金刚烷塞子（AD塞子）的合成。在第二步骤中，将PR共聚物通过原子转移自由基聚合（ATRP）与PR大分子引发剂来制备。此外，我们发现在PR大分子引发剂的环糊精（CD）的含量为在第一步骤中控制的，而聚合的（DP）的甲基丙烯酸丁酯（BMA）的程度也出现可调在第二步骤。此外，PR共聚物加工成通过溶液浇铸和通过静电纺丝具有良好的形态的非织造垫的自支撑膜。应变应力测试表明该膜具有比通用塑料更高的拉伸强度，和纯PBMA和动态力学分析仪的结果推断该PR块的移动也可以是存在于所述PR共聚物和具有该共聚物的机械性能有一定的影响。总之，CD内容的可控性和聚合物链长度提供足够的空间来修改它的分子结构，以设计和合成不同PR共聚物具有各种特性，拓宽从溶液和水凝胶的应用领域的固体状态。

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  • 来源
    《RSC Advances》 |2016年第39期|共10页
  • 作者

    Yan Zhi; Guo Aiju; Ye Lin; Zhang Aiying; Feng Zengguo;

  • 作者单位

    Beijing Inst Technol Sch Mat Sci &

    Engn Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci &

    Engn Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci &

    Engn Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci &

    Engn Beijing 100081 Peoples R China;

    Beijing Inst Technol Sch Mat Sci &

    Engn Beijing 100081 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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