Reversible Complexation Mediated Living Radical Polymerization (RCMP) Using Organic Catalysts

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• 作者：Atsushi Goto ; Tomohiro Suzuki ; Haruki Ohfuji ; Miho Tanishima ; Takeshi Fukuda ; Yoshinobu Tsujii ; Hironori Kaji
• 刊名：Macromolecules
• 出版年：2011
• 出版时间：November 22, 2011
• 年：2011
• 卷：44
• 期：22
• 页码：8709-8715
• 全文大小：855K
• 年卷期：v.44,no.22(November 22, 2011)
• ISSN：1520-5835

文摘

A novel class of living radical polymerization using amines as organic catalysts was developed. It is based on a new reversible activation mechanism, reversible complexation (RC). The polymer molecular weight and its distribution (M_w/M_n = 1.1鈥?.4) were well controlled in the polymerizations of methyl methacrylate (MMA), styrene, acrylonitrile, and some functional methacrylates with a fairly high conversion in hours in many cases. The catalysts include such common amines as triethylamine and tetramethylethylenediamine (TMEDA). Their low cost, good environmental safety, and ease of handling may be attractive for possible applications. Kinetic studies supported the RC mechanism. The activation rate constant for the MMA/TMEDA system was large enough to explain why the system provides low-polydispersity polymers from an early stage of polymerization.