Interactions of partially screened polyelectrolyte layers with oppositely charged surfactant in confined environment

被引:6
作者
Abraham, T
Giasson, S [1 ]
机构
[1] Univ Laval, Dept Chem Engn, Ste Foy, PQ G1K 7P4, Canada
[2] Univ Laval, CERSIM, Ste Foy, PQ G1K 7P4, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
surface forces; ellipsometry; polyelectrolyte; surfactant interactions;
D O I
10.1016/S0927-7757(00)00749-4
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We studied the association of hydrophobically anchored polyelectrolyte layers with a free oppositely charged surfactant at a hydrophobized solid-liquid interface under partially screened conditions using the surface forces and ellipsometry techniques. Combining results from both measurements, we conclude that the association of surfactant (from solution below the cmc) with partially screened adsorbed polyelectrolyte layers causes a reduction in the surface density of the polymer chains and a subsequent reduction in the extensibility of the chains. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:103 / 110
页数:8
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