STAR POLYMERS AND BLOCK COPOLYMERS OF 2-OXAZOLINES USING CHLOROFORMATES AS INITIATORS

被引：0
作者：
DWORAK, A [1 ]
SCHULZ, RC [1 ]
机构：
[1] UNIV MAINZ,INST ORGAN CHEM,W-6500 MAINZ,GERMANY
来源：
MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS | 1991年 / 192卷 / 02期
关键词：
D O I：
暂无
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Polyfunctional chloroformates were applied to the polymerization of 2-phenyl-2-oxazoline and 2-methyl-2-oxazoline. The use of a trifunctional initiator, viz. the chloroformate of 2,2-bis(hydroxymethyl)-1-butanol, led to three-arm star polymers of 2-oxazolines. Two macromolecular initiators, viz. poly(ethylene oxide) with two chloroformate end groups (alpha-chloroformyl-omega-chloroformyloxypoly(oxyethylene)) with number-average molar masses 350 g/mol less-than-or-equal-to MBAR(n) less-than-or-equal-to 6000 g/mol and alpha-chloroformyl-omega-methoxypoly(oxyethylene) with MBAR(n) = 350 and 750 g/mol were applied for the synthesis of poly(2-oxazoline)-block-poly(ethylene oxide)-block-poly(2-oxazoline) and poly(2-oxazoline)-block-poly(ethylene oxide) copolymers, respectively.
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页码：437 / 445
页数：9
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