Amphiphile micelles formed by polystyrene/poly(2-vinyl pyridine) heteroarm star copolymers in toluene

被引：69

作者：

Voulgaris, D

Tsitsilianis, C

Grayer, V

Esselink, FJ

Hadziioannou, G

机构：

[1] Univ Patras, Dept Chem Engn, Patras 26500, Greece

[2] FORT, HT, ICE, Inst Chem Engn & High Temp Chem Proc, Patras 26500, Greece

[3] Univ Groningen, Dept Polymer Chem, NL-9747 AG Groningen, Netherlands

[4] Univ Groningen, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands

来源：

POLYMER | 1999年 / 40卷 / 21期

关键词：

heteroarm star copolymers; amphiphile micelles; scaling relations;

D O I：

10.1016/S0032-3861(98)00815-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We report the micellar behavior of polystyrene/poly(2-vinyl pyridine) heteroarm star copolymers (PS(n)P2VP(n)) in toluene which is a selective solvent of polystyrene. A series of PS(n)P2VP(n) were synthesized by anionic polymerization and their micellar characteristics such as critical micelle concentrations (cmc), aggregation numbers, hydrodynamic dimensions and core-corona sizes were determined by the means of static and dynamic light scattering, viscometry and transmission electron microscopy. All these parameters were studied as a function of the insoluble arm length and the corresponding scaling relations were established. Our system seems to belong to the class of amphiphile micelles characterized by strong dependencies of the aggregation number and the microdomain sizes on the insoluble arm length. This behavior is also characteristic of strongly segregated diblock and triblock copolymer systems. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：5879 / 5889

页数：11

共 23 条

[1] POLY(ETHYLENE OXIDE)-POLY(PROPYLENE OXIDE)-POLY(ETHYLENE OXIDE) BLOCK-COPOLYMER SURFACTANTS IN AQUEOUS-SOLUTIONS AND AT INTERFACES - THERMODYNAMICS, STRUCTURE, DYNAMICS, AND MODELING [J].