A counterintuitive observation concerning hydrogen bonding in polymer blends

被引:12
作者
Coleman, MM [1 ]
Narvett, LA [1 ]
Painter, PC [1 ]
机构
[1] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
基金
美国国家科学基金会;
关键词
hydrogen bonding; polymer blends; competing equilibria;
D O I
10.1016/S0032-3861(98)00033-0
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
It has been determined from an infrared analysis of miscible blends of n-butyl methacrylate-co-4-vinylphenol and styrene-co-2-vinyl pyridine copolymers that the fraction of hydrogen-bonded carbonyl groups actually increases with temperature. At first glance, this is counterintuitive, but it is entirely consistent behaviour for a multicomponent hydrogen-bonding system containing competing acceptor groups that have disparate enthalpies of hydrogen bond formation. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:5867 / 5869
页数:3
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