FORMATION OF MESOGLOBULES BY POLY(N,N-DIETHYLACRYLAMIDE)CHAINS IN DILUTE SOLUTIONS

被引：0
|
作者：
张广照 [1 ]
机构：
[1] Department of Chemical Physics,University of Science and Technology of China
来源：
Chinese Journal of Polymer Science | 2009年 / 27卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Mesoglobule; Light scattering; Microcalorimetry;
D O I：
暂无
中图分类号：
O631.3 [高聚物的化学性质];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The association of poly(N,N-diethylacrylamide)(PDEA) chains has been investigated by a combination of static and dynamic laser light scattering(LLS).Unlike poly(N-isopropylacrylamide)(PNIPAM),PDEA chains can not form the C=O…H-N hydrogen bonds.Our results demonstrate that a limited number of PDEA chains collapse and associate into metastable globules in dilute solutions.The heating rate has great effect on the mesoglobule size.The formation of such mesoglobules is attributed to the competition between intrachain contraction and interchain association.The stabilization has been explained in terms of viscoelastic effect.
引用
收藏
页码：561 / 567
页数：7
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