MULTIPLE MORPHOLOGIES OF CREW-CUT AGGREGATES OF POLYSTYRENE-B-POLY(ACRYLIC ACID) BLOCK-COPOLYMERS

被引：2318

作者：

ZHANG, LF ^{[1
]}

EISENBERG, A ^{[1
]}

机构：

[1] MCGILL UNIV, DEPT CHEM, MONTREAL, PQ H3A 2K6, CANADA

来源：

SCIENCE | 1995年 / 268卷 / 5218期

关键词：

D O I：

10.1126/science.268.5218.1728

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The observation by transmission electron microscopy of six different stable aggregate morphologies is reported for the same family of highly asymmetric polystyrene-poly(acrylic acid) block copolymers prepared in a low molecular weight solvent system. Four of the morphologies consist of spheres, rods, lamellae, and vesicles in aqueous solution, whereas the fifth consists of simple reverse micelle-like aggregates. The sixth consists of up to micrometer-size spheres in aqueous solution that have hydrophilic surfaces and are filled with the reverse micelle-like aggregates. In addition, a needle-like solid, which is highly birefringent, is obtained on drying of aqueous solutions of the spherical micelles. This range of morphologies is believed to be unprecedented for a block copolymer system.

引用

页码：1728 / 1731

页数：4