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PEG-PCL 基温敏性嵌段-接枝共聚物胶束化与凝胶化  
PEG-PCL 基温敏性嵌段-接枝共聚物胶束化与凝胶化
资料类型: JPG图片格式
关键词: Block-graft  copolymers  Micellization  Sol-to-gel  transition  
资料大小: 93KB
所属学科: 高分子化学
来源: 来源网络
简介:
A series of triblock-graft copolymers PEG-b-[PCL-g-P(MEO2MA-co-OEGMA)]-b-PEG were synthesized by combination of ring-opening polymerization (ROP) and atomic transfer radical polymerization (ATRP). The phase transitions induced by temperature have been studied. The synthesized triblock-graft compolymer not only exhibited a hydrophilic, but also have temperature sensitivity. The triblock-graft copolymers could change from random coil to compact globule, yielding a more compact core-shell structure as the temperature was promoted above their LCST. The triblock-graft copolymers solutions appear a gel phase when the copolymers solution has a higher concentration about 30 wt % at room temperature.
上传人: liuyh
上传时间: 2013-11-22 14:55:19
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