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从1,2-dithiolanes中衍生而来的结构动态水凝.

Gregg A Barcan1, Xiangyi Zhang1, Robert M Waymouth1

  • 1Department of Chemistry, Stanford University, Stanford, California 94305, United States.

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|April 29, 2015
PubMed
概括
此摘要是机器生成的。

研究人员从动态聚合物中开发出可适应的水凝. 这些智能材料具有自我愈合特性,可以注射,并且在损坏后迅速恢复,提供了多样化的应用.

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科学领域:

  • 聚合物化学 聚合物化学
  • 材料科学 材料科学 材料科学
  • 生物材料是一种生物材料.

背景情况:

  • 适应性材料对于智能应用,如自我修复和环境响应性至关重要.
  • 结构动态聚合物为设计这种先进材料提供了一条途径.
  • 为这些聚合物开发高效的合成方法是一个持续的挑战.

研究的目的:

  • 为了合成水溶性triblock共聚合物与动态dithiolane块.
  • 从这些共聚合物中制造出自我愈合的水凝.
  • 为了研究这些动态水凝的调节性质.

主要方法:

  • 循环碳酸盐 (三甲碳酸盐/二甲,TMCDT) 的有机催化环开放聚合,使用聚乙烯氧化物) 二醇.
  • 通过与dithiol交叉连接形成水凝.
  • 描述水凝的特性,包括自我愈合,可注射性和机械回收.

主要成果:

  • 成功合成了水溶性ABAtriblock共聚合物与终端dithiolane块.
  • 生成的动态水凝呈现可逆的1,2-二硫乙烯环开放.
  • 证明了快速的自我愈合,可注射性和变形后的机械性质恢复.
  • 证明凝的特性可以根据dithiolane含量,pH值和温度进行调整.

结论:

  • 开发的有机催化方法为动态,自我愈合的水凝提供了一条有效的途径.
  • 这些可适应的材料在需要注射性和快速机械回收的应用中表现有前途.
  • 调节凝特性的能力为定制应用提供了显著的设计灵活性.