Newly designed star-shaped polystyrene: Synthesis and characterization

被引:47
作者
Cloutet, E
Fillaut, JL
Astruc, D
Gnanou, Y
机构
[1] Univ Bordeaux 1, CNRS, Chim Organ & Organomet Lab, UMR 5802, F-33405 Talence, France
[2] Univ Bordeaux 1, CNRS, ENSCPB, Chim Polymeres Organ Lab,UMR 5802, F-33402 Talence, France
关键词
D O I
10.1021/ma980587q
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
In this study, emphasis is placed on the synthesis of hexaarm star polystyrene obtained via "living" cationic polymerization, using a newly designed hexafunctional initiator (1). This hexafunctional initiator (1) has been prepared via [Fe(C5H5)](+)-induced hexabenzylation of hexamethylbenzene, followed by a regiospecific sequence of reactions meant to generate six phenylethyl chloride (PhEtCl) groups on the para position of the outer rings. The conditions that afford a truly controlled polymerization of styrene were first defined using PhEtCl as the monofunctional model of (1). Finally, these conditions were used to build hexaarm star polymers from (1) as plurifunctional initiator. Well-defined star samples were obtained over a wide range of molar masses (10(3) g/mol less than or equal to M-n less than or equal to 10(5) g/mol) via this original divergent method.
引用
收藏
页码:6748 / 6755
页数:8
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