Synthesis of poly(glycerol)-block-poly(methyl acrylate) multi-arm star polymers

被引:3
|
作者
Maier, S
Sunder, A
Frey, H
Mülhaupt, R
机构
[1] Univ Freiburg, Freiburger Mat Forsch Zentrum, D-79104 Freiburg, Germany
[2] Univ Freiburg, Inst Makromol Chem, D-79104 Freiburg, Germany
关键词
D O I
10.1002/(SICI)1521-3927(20000301)21:5<226::AID-MARC226>3.0.CO;2-O
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Novel polyfunctional macroinitiators for atom transfer radical polymerization (ATRP) were obtained via esterification of hyperbranched polyglycerol (PG) (M-n = 4 770 g/mol, (M) over bar(w)/(M) over bar(n) = 1.5) with 2-bromoisobutyryl bromide. Such macroinitiators were used in the presence of CuBr/pentamethyldiethylenetriamine (PMDETA) to initiate methyl acrylate (MA) polymerization, resulting in multi-arm block copolymers with polyether core and 45-55 PMA arms. PMA arm length was controlled via monomer/initiator ratio and conversion (<35%). Polymers were characterized by H-1 NMR, C-13 NMR, SEC, membrane osmometry and DSC.
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页码:226 / 230
页数:5
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