NEUTRON REFLECTIVITY STUDIES OF POLYMERS ADSORBED ON MICA FROM SOLUTION

被引：96
作者：
COSGROVE, T
HEATH, TG
PHIPPS, JS
RICHARDSON, RM
机构：
[1] School of Chemistry, University of Bristoi
来源：
MACROMOLECULES | 1991年 / 24卷 / 01期
关键词：
D O I：
10.1021/ma00001a015
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Neutron reflectivity has been used to study the conformation of a block copolymer (polystyrene-poly(2-vinylpyridine)) and a homopolymer (polystyrene) adsorbed on mica from solution. On addition of polymer the reflectivity profile steepens compared with that obtained from the clean mica/solvent interface. The results have been fitted to various theoretical models of the volume fraction profiles of the adsorbed layer. For the homopolymer system, the best fits were obtained with profiles having the form of an exponential decay, whereas for the block copolymer in toluene, profiles with a maximum or a parabolic shape gave the best fits.
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页码：94 / 98
页数：5
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