RAFT cryopolymerizations of acrylamides and acrylates in dioxane at-5 °C

被引：17

作者：

Sun, Xiao-Li ^{[1
]}

He, Wei-Dong ^{[1
]}

Pan, Ting-Ting ^{[1
]}

Ding, Zong-Lei ^{[1
]}

Zhang, Yu-Juan ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Polymer Sci & Engn, CAS Key Lab Soft Matter Chem, Hefei 230026, Anhui, Peoples R China

来源：

POLYMER | 2010年 / 51卷 / 01期

关键词：

RAFT; Controlled polymerization; Cryopolymerization; CHAIN TRANSFER RAFT; RADICAL POLYMERIZATION; N-ISOPROPYLACRYLAMIDE; POLYMERS; CRYOGELS; H-1-NMR;

D O I：

10.1016/j.polymer.2009.11.014

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Reversible addition-fragmentation chain transfer (RAFT) cryopolymerizations of acrylamides and acrylates were successfully carried out at -5 degrees C with cumene hydroperoxicle/ascorbic acid as redox initiation couple and 2-dodecylsulfanyl- thiocarbonylsulfanyl-2-methylpropinoic acid as chain transfer agent. The cryopolymerization features of N,N-dimethylacrylamide (DMA) and tert-butyl acrylate (tBA) were investigated in view of kinetics, molecular weight and its distribution by proton nuclear magnetic resonance analysis and gel permeation chromatography. Furthermore, sequential block cryopolymerizations of N-isopropylacrylamide were performed with the obtained trithiocarbonate- functionalized PDMA or PtBA as macro-CrA and the corresponding block polymers were obtained. All the results demonstrated that these cryopolymerizations bear all the characteristics of controlled/living radical polymerizations. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：110 / 114

页数：5

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