EFFECT OF TEMPERATURE ON THE STRUCTURAL-PROPERTIES OF THE POLY(ETHYLENE OXIDE)/POLY(PROPYLENE OXIDE)/POLY(ETHYLENE OXIDE) TRIBLOCK COPOLYMER STUDIED WITH TIME-CORRELATED FLUORESCENCE PROBING TECHNIQUES

被引：9

作者：

LIANOS, P ^{[1
]}

BROWN, W ^{[1
]}

机构：

[1] UNIV UPPSALA,DEPT PHYS CHEM,S-75121 UPPSALA,SWEDEN

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1992年 / 96卷 / 15期

关键词：

D O I：

10.1021/j100194a062

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of temperature between 10 and 50-degrees-C on the structural properties of a poly(ethylene oxide)/poly(propylene oxide)/poly(ethylene oxide) triblock copolymer has been studied with time-correlated fluorescence probing techniques using pyrene. Two different models have been used for the analysis of the fluorescence decay profiles, one probing micellar structures and the other probing percolating structures. Between 15 and 25-degrees-C we have detected a pronounced transition from a micellar to a solidlike gel phase, while with a further increase of temperature our results indicate a possible second phase transition.

引用

页码：6439 / 6441

页数：3

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