Narrow-polydispersity polystyrene poly[styrene-co-(butyl methacrylate)] block copolymers by an N-oxyl mediated free radical polymerization process

被引：47
作者：
Butz, S [1 ]
Baethge, H [1 ]
Schmidt-Naake, G [1 ]
机构：
[1] TU Clausthal, Inst Chem Tech, D-38678 Clausthal Zellerfeld, Germany
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 1997年 / 18卷 / 12期
关键词：
D O I：
10.1002/marc.1997.030181208
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Polystyrene/poly[styrene-co-(butyl methacrylate)] block copolymers with controlled molecular weights and with polydispersities generally below (M) over bar w/(M) over bar(n) = 1,45 and partially as low as (M) over bar w/(M) over bar(n) = 1,19 were synthesized by a free radical bulk copolymerization using a 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO)-capped polystyrene macroinitiator. The influence of the macroinitiator concentration on the block copolymerization was studied. The polymerization rates are independent of the macroinitiator concentration and are close to that of thermally self-initiated styrene/butyl methacrylate copolymerizations showing the important role of self-initiation for N-oxyl mediated free radical polymerizations.
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页码：1049 / 1055
页数：7
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