WATER-INDUCED MICELLAR STRUCTURES OF BLOCK COPOLY(OXYETHYLENE-OXYPROPYLENE-OXYETHYLENE) IN O-XYLENE

被引：23

作者：

WU, GW ^{[1
]}

ZHOU, ZK ^{[1
]}

CHU, B ^{[1
]}

机构：

[1] SUNY STONY BROOK,DEPT CHEM,STONY BROOK,NY 11794

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1993年 / 31卷 / 13期

关键词：

WATER-INDUCED MICELLES; MICELLAR STRUCTURE; POLY(OXYETHYLENE-OXYPROPYLENEOXYETHYLENE); LASER LIGHT SCATTERING; SMALL-ANGLE X-RAY SCATTERING; TRANSIENT ELECTRIC BIREFRINGENCE;

D O I：

10.1002/polb.1993.090311317

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 previously reported the water-induced micelle formation of copoly(oxyethylene-oxypropylene-oxyethylene), Pluronic L64, in o-xyIene. The micellar properties could be controlled by varying the water to EO ratio (Z) in micelles. In this paper, laser light scattering, transient electric birefringence (TEB), and synchrotron small-angle x-ray scattering (SAXS) were used to study the micellar structure at different Z values. Both TEB and SAXS results further confirmed the micellar shape transition from that of a sphere to a nonspherical shape. A comparison between TEB and dynamic light-scattering results as well as the SAXS experiments showed an ellipsoidal shape for micelles when Z > 1.3 with the oblate being the more reasonable form for fitting all the experimental parameters. The degree of asymmetry appeared to be not high. (C) 1993 John Wiley & Sons, Inc.

引用

页码：2035 / 2047

页数：13

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