广东工业大学学报 ›› 2018, Vol. 35 ›› Issue (05): 80-85.doi: 10.12052/gdutxb.170155

• 综合研究 • 上一篇    下一篇

醇相光引发RAFT分散聚合制备全丙烯酸酯二嵌段共聚物纳米材料

刘冬冬, 谭剑波, 张力   

  1. 广东工业大学 材料与能源学院, 广东 广州 510006
  • 收稿日期:2017-11-23 出版日期:2018-07-10 发布日期:2018-09-11
  • 通信作者: 张力(1967-),女,教授,博士,主要研究方向为新型聚合物材料.E-mail:lizhang@gdut.edu.cn E-mail:lizhang@gdut.edu.cn
  • 作者简介:刘冬冬(1994-),男,硕士研究生,主要研究方向为光分散聚合
  • 基金资助:
    国家自然科学基金资助项目（21504017）

Preparation of All-acrylic Diblock Copolymer Nano-objects via Alcoholic Photoinitiated RAFT Dispersion Polymerization

Liu Dong-dong, Tan Jian-bo, Zhang Li   

  1. School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
  • Received:2017-11-23 Online:2018-07-10 Published:2018-09-11

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摘要： 在40℃反应条件下，以聚丙烯酸羟乙酯（PHEA）为大分子RAFT试剂，丙烯酸异冰片酯（IBOA）为聚合单体，在乙醇/水混合溶剂中，通过光引发RAFT分散聚合制备全丙烯酸酯（PHEA25-PIBOAn）嵌段共聚物纳米材料.反应在可见光（λmax=405 nm，0.4 mW/cm2）照射下，30 min内达到很高的单体转化率（≥95%）.聚合反应动力学结果表明反应主要分为两个阶段，凝胶渗透色谱结果表明聚合过程体现出良好的可控性.探究了嵌段共聚物纳米材料的形貌变化，成功得到了球形和囊泡结构形貌.

关键词: 光引发, RAFT分散聚合, 嵌段共聚物

Abstract: All-acrylic poly(2-hydroxyethyl acrylate)-poly(isobornyl acrylate) (PHEA25-PIBOAn) block copolymer nano-objects were prepared by photoinitiated RAFT dispersion polymerization of IBOA in ethanol/water at 40℃ using a PHEA macromolecular chain transfer agent (macro-CTA). Polymerizations proceeded rapidly upon exposure to visible light irradiation (λmax=405 nm, 0.4 mW/cm2) with high monomer conversion (≥ 95%) being achieved within 30 min. The kinetics of polymerization indicated that the polymerization could be separated into two stages. Gel permeation chromatography (GPC) analysis demonstrated that good control was maintained throughout the photo-PISA process, and the final block copolymers exhibited relatively low polydispersities (Mw/Mn ≤ 1.50). Spherical micelles and vesicles were prepared by this method.

Key words: photoinitiated, RAFT dispersion polymerization, block copolymer

中图分类号: 

  • TQ316.31
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[1] 付黎黎, 柏宇豪, 张雪超, 谭剑波, 张力. RAFT光引发分散聚合制备单分散PMMA微球[J]. 广东工业大学学报, 2017, 34(02): 34-39.
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