Photoirradiated Atom Transfer Radical Polymerization with an Alkyl Dithiocarbamate at Ambient Temperature

被引:119
作者
Kwak, Yungwan [1 ]
Matyjaszewski, Krzysztof [1 ]
机构
[1] Carnegie Mellon Univ, Dept Chem, Ctr Macromol Engn, Pittsburgh, PA 15213 USA
基金
美国安德鲁·梅隆基金会; 美国国家科学基金会;
关键词
FRAGMENTATION CHAIN TRANSFER; BLOCK-COPOLYMERS; METHYL-METHACRYLATE; RAFT POLYMERIZATION; INIFERTER TECHNIQUE; ELECTRON-TRANSFER; ATRP; STYRENE; AGENT; COMBINATION;
D O I
10.1021/ma100850a
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Photoirradiated atom transfer radical polymerization (ATRP) with an alkyl dithiocarbamate at ambient temperature was studied. ATRP of methyl methacrylate (MMA) with 2-(N,Ndiethyldithiocarbamyl) isobutyric acid ethyl ester (EMADC) and a copper complex was performed under UV irradiation. Similar rate of polymerization is observed for UV-induced ATRP with 0.5, 1, and 2 equivalent of copper complex compared to initiator. After 6 h polymerization, a chain extended PMMA with little tailing in the low-MW region is obtained at 17.7% conversion. Well-controlled polymerization of MMA is achieved using a copper catalyst and DC initiator under UV irradiation at ambient temperature. Peak deconvolution indicate 5% dead chains in the PMMA-dithiocarbamate (DC) macroinitiator, demonstrating a maintained DC groups at the PMMA chain ends.
引用
收藏
页码:5180 / 5183
页数:4
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