期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 39, 期 17, 页码 2889-2895出版社
JOHN WILEY & SONS INC
DOI: 10.1002/pola.1268
关键词
free-radical polymerization; stable nitroxides; 2-vinylpyridine; random copolymers; block copolymers
Bulk free-radical polymerization of 2-vinylpyridine (2VP) in the presence of 2,2,6,6-tetramethylpiperidine-N-oxyl, (TEMPO) was studied under different conditions (temperature and presence of additives). Linear poly-(2-vinylpyridine) with a narrow molecular weight distribution and controllable molecular weight was prepared in the presence of acetic anhydride at 95 degreesC up to a conversion of 66%. At higher conversions side reactions became very important (pseudoliving polymerization). By applying this procedure, well-defined random copolymers of 2VP with styrene or tert-butylmethacrylate as well as block copolymers of 2VP with styrene were synthesized. (C) 2001 John Wiley & Sons, Inc.
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