有机化学 ›› 2016, Vol. 36 ›› Issue (9): 2220-2224.DOI: 10.6023/cjoc201605023 上一篇    下一篇

研究简报

ABC三嵌段共聚物的聚合诱导自组装研究

黄锋, 徐鹏翔, 吕翌晟, 林绍梁   

  1. 华东理工大学材料科学与工程学院 上海 200237
  • 收稿日期:2016-05-14 修回日期:2016-05-22 发布日期:2016-05-24
  • 通讯作者: 林绍梁 E-mail:slin@escust.edu.cn
  • 基金资助:

    国家自然科学基金(Nos.51573046、51622301)、中央高校基本科研专项资金(Nos.B14018、WD1213002)、上海市曙光学者计划(No.14SG29)资助项目.

Polymerization-Induced Self-Assembly of ABC Triblock Copolymer

Huang Feng, Xu Pengxiang, Lü Yisheng, Lin Shaoliang   

  1. School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237
  • Received:2016-05-14 Revised:2016-05-22 Published:2016-05-24
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos.51573046, 51622301), the Fundamental Research Funds for the Central Universities (Nos.B14018, WD1213002) and the Project of Shanghai Municipality (No.14SG29).

聚合诱导自组装(PISA)是一种在高浓度溶液中可连续大量制备纳米材料的新技术,结合计算模拟方法,研究其动力学过程可强化对PISA的认识和调控.通过耗散粒子动力学(DPD)模拟,研究了ABC三嵌段共聚物的聚合诱导自组装过程.先利用亲溶剂A链段引发B单体聚合,随着疏溶剂B链段的增长,AB二嵌段共聚物可组装并发生聚集体结构的连续转变,由球形胶束→蠕虫状胶束→层状结构→囊泡.再将C单体逐步聚合到AB共聚物上,调控C链段的亲疏溶剂性,可聚合诱导组装或解组装形成不同的ABC三嵌段共聚物聚集体.

关键词: 聚合诱导自组装, 耗散粒子动力学, 形貌转变

Polymerization-induced self-assembly (PISA) is a new robust strategy to produce concentrated dispersions of block copolymer nano-objects. Insight into the dynamic process can promote the development of PISA by computer simulations. In this work, dissipative particle dynamics simulations (DPD) with a reaction model were employed to investigate the PISA behavior of ABC triblock copolymer. The polymerization of solvophobic B block was firstly performed using solvophilic macromolecular initiator A to fabricate AB copolymer. The continuous morphology transition from spherical micelle to wormlike micelle, to lamellae and finally to vesicle was observed during the process. Then, the polymerization of C block was further carried out and induced the different ABC triblock copolymer aggregates by tuning the interaction between C block and solvent (solvophobic or solvophilic).

Key words: polymerization, self-assembly, dissipative particle dynamics, simulation