CONTROLLABLE SPECIFIC INTERACTIONS AND MISCIBILITY IN POLYMER BLENDS .3. NONRADIATIVE ENERGY-TRANSFER FLUORESCENCE STUDIES

被引：42

作者：

JIANG, M

CHEN, WJ

YU, TY

机构：

[1] Institute of Material Science, Fudan University, Shanghai

来源：

POLYMER | 1991年 / 32卷 / 06期

基金：

中国国家自然科学基金;

关键词：

POLYMER BLENDS; HYDROGEN BONDING; SPECIFIC INTERACTION; MISCIBILITY; FLUORESCENCE; NONRADIATIVE ENERGY TRANSFER;

D O I：

10.1016/0032-3861(91)90583-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polymer blends of poly(methyl acrylate) and modified polystyrene (PS(OH)) with introduced strong proton-donating hydroxyl groups have been studied by non-radiative energy transfer fluorescence. As the content of hydroxyl in PS(OH) increases from 0 to 1.6 mol%, the efficiency of energy transfer increases gradually. This modification corresponds to the morphological change observed by transmission electron microscopy (TEM) from the completely phase-separated state to the single-phase state. Blends with hydroxyl contents in PS(OH) > 7 mol% show much higher efficiency of energy transfer than miscible blends, indicating a certain structural change which cannot be detected by TEM. The effect of the formation rate of the toluene cast films on morphology and the effect of chromophore concentration on efficiency of energy transfer are also discussed.

引用

页码：984 / 989

页数：6

共 12 条

[1] INVESTIGATION OF POLYMER MISCIBILITY BY SPECTROSCOPIC METHODS .4. HOW FAR IS POLYVINYL-CHLORIDE) MISCIBLE WITH S-POLY(METHYL METHACRYLATE) AND POLY(STYRENE-CO-ACRYLONITRILE) - AN ANSWER FROM NONRADIATIVE ENERGY-TRANSFER [J].