Xanthate mediated living polymerization of vinyl acetate: A systematic variation in MADIX/RAFT agent structure

被引：304

作者：

Stenzel, MH ^{[1
]}

Cummins, L ^{[1
]}

Roberts, GE ^{[1
]}

Davis, TP ^{[1
]}

Vana, P ^{[1
]}

Barner-Kowollik, C ^{[1
]}

机构：

[1] Univ New S Wales, Ctr Adv Macromol Design, Sch Chem Engn & Ind Chem, Sydney, NSW 2052, Australia

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2003年 / 204卷 / 09期

关键词：

kinetics (polym.); living polymerization; MADIX; reversible addition fragmentation chain transfer; vinyl acetate; FRAGMENTATION CHAIN-TRANSFER; TRANSFER RAFT POLYMERIZATION; FREE-RADICAL POLYMERIZATION; RETARDATION; INHIBITION; HYDROGELS; STYRENE;

D O I：

10.1002/macp.200390089

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Eight xanthates were synthesized to induce living free radical polymerization of vinyl acetate. Four compounds, methyl (4-methoxyphenoxy)carbonothioylsulfanyl acetate, methyl (methoxycarbonothioyl)sulfanyl acetate, methyl (ethoxycarbonothioyl)sulfanyl acetate and methyl (isopropoxycarbonothioyl)sulfanyl acetate were identified as suitable MADIX/RAFT agents, yielding low polydispersity (PDI < 1.2)poly(vinyl acetate) of molecular weights exceeding 5 x 10(4) g.mol(-1). All suitable MADIX/RAFT agents exhibited extended periods of inhibition (0.3 h < t(inh) < 10 h) and moderate rate retardation. The ability of these compounds to control vinyl acetate polymerization can be correlated with the electron density on the central carbon atom of the xanthate. Electrospray ionizaiton mass spectrometric analysis was performed to complete the investigation on the new MADIX/RAFT agents.

引用

页码：1160 / 1168

页数：9

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