Synthesis and characterization of amphiphilic poly (caprolactone) star block copolymers
Synthesis and characterization of amphiphilic poly (caprolactone) star block copolymers
复制标题
DOI：
10.1002/marc.200300118
复制
发表时间：
2004-03-04
影响因子：
4.6
通讯作者：
Cho, CG
中科院分区：
文献类型：
--
作者：
An, SG;Cho, CG
采用顺序加成聚合法合成了由可完全降解的聚己内酯组成的新型星形两亲性嵌段共聚物。在第一步中，通过季戊四醇引发己内酯开环聚合制备四臂大分子引发剂。然后将4-（2-苄氧基乙基）-ε-己内酯依次加入到四臂大分子引发剂中合成了嵌段共聚物。通过催化脱苄基反应得到了含有聚己内酯-聚[4-（2-羟乙基）己内酯]嵌段的星形两亲性嵌段共聚物。
Novel, star-shaped, amphiphilic block copolymers composed of fully degradable poly(caprolactone) were synthesized by sequential addition polymerization. In the first step, four-arm macroinitiators were produced by ring-opening polymerization of caprolactone by initiation with pentaerythritol. Then block copolymers were synthesized by sequential addition of 4-(2-benzyloxyethyl)-epsilon-caprolactone to the four-arm macroinitiators. Star-shaped, amphiphilic block copolymers containing poly(caprolactone)-block poly[4-(2-hydroxyethyl)caprolactone] segments were obtained by catalytic debenzylation.