Entanglement of polymer chains in concentrated region by fluorescence probe technique

被引：0

作者：

Li, XS

Wang, GC

He, BL

机构：

[1] Southeast Univ, Dept Chem Engn, Nanjing 210096, Peoples R China

[2] Nankai Univ, Inst Polymer Chem, Tianjin 300071, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 1999年 / 10卷 / 09期

关键词：

fluorescence spectroscopy; entanglement; critical concentration;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The fluorescence of polystyrene labeled with pyrenyl groups has been investigated in concentrated solutions. The ratio of excimer to monomer intensities (I-c/I-m) of pyrenyl labels is found to vary with increasing polymer concentration (C) and display fractional dependence on the C. A critical concentration, C-m at about 0.32g/ml, is first manifested. The results are interpreted by interchain interaction and entanglement of polymer chains.

引用

页码：795 / 798

页数：4