黄原酸酯调控的氯乙烯的可逆-加成断裂链转移聚合

沈坚苗1 黄志辉1 包永忠1

(1.化学工程联合国家重点实验室浙江大学化学工程与生物工程学院, 浙江杭州 310027)

【摘要】以三种不同结构的黄原酸酯为调控剂, 进行氯乙烯 (VC) 溶液和细乳液可逆加成-断裂链转移 (RAFT) 聚合, 发现O-乙基黄原酸丙酸乙酯对VC聚合的调控效果良好, 氯乙烯RAFT细乳液聚合速率明显大于溶液聚合, VC聚合12 h转化率大于90%, 但聚氯乙烯 (PVC) 的分子量分布宽于溶液聚合产物。核磁共振和紫外可见吸收光谱分析证明合成的PVC具有黄原酸酯基端基结构, 结构缺陷少。含黄原酸酯基PVC可进一步调控VC及醋酸乙烯酯聚合, 进行扩链或得到嵌段共聚物。结合聚合动力学, 说明黄原酸酯调控的氯乙烯聚合具有活性特征。

【关键词】 聚合物; 合成; 动力学; 氯乙烯; 可逆加成-断裂链转移聚合; 黄原酸酯;

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This Article

ISSN:0438-1157

CN: 11-1946/TQ

Vol 69, No. 11, Pages 4848-4855+4929

November 2018

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摘要

  • 引言
  • 1 实验部分
  • 2 结果与讨论
  • 3 结论
  • 参考文献