MECHANISM OF RAFT POLYMERIZATION-A MODEL STUDY

摘要：

Controlled/living radical polymerization mediated by thiocarbonylthio species achieves living features through the reversible addition-fragmentation chain transfer (RAFT) process (Eqn 1).1 The mechanism of the RAFT polymerization cause much attention due to the inconsistence between theoretical and experimental results, specifically the retardation kinetics. In order to explain the reason for radical loss, two different mechanisms were postulated, e.g., slow fragmentation of the intermediate radical2 and cross termination between propagating radical and the intermediate radical3. However, the rate coefficient of fragmentation, Kfrg, is estimated to be 7× 104 and 10-2 s-1, respectively, which are of extremely large difference.

作者: Junpo He Changxi Li Yuankai Gu Yong Ao Jiangtao Xu Yuliang Yang

作者单位: The Key Laboratory of Molecular Engineering of Polymers(MOE), Dept.Macromolecular Science, Fudan University, Shanghai, 200433, CHINA

会议类型: 国际会议

会议名称: International Symposium on Polymer Chemistry(第四届国际高分子化学学术研讨会 PC 2010)

会议地点: 苏州

会议语种:英文

页码: 9-10

在线出版日期: 2010-06-02（万方平台首次上网日期，不代表论文的发表时间）