Monolayers of diblock copolymer at the air-water interface: the attractive monomer-surface case

被引:108
作者
Faure, MC [1 ]
Bassereau, P
Carignano, MA
Szleifer, I
Gallot, Y
Andelman, D
机构
[1] Inst Curie, CNRS, UMR 168, F-75231 Paris 05, France
[2] Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA
[3] Inst Charles Sadron, F-67083 Strasbourg, France
[4] Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys & Astron, IL-69978 Tel Aviv, Israel
关键词
D O I
10.1007/s100510050324
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We have studied both experimentally and theoretically the surface pressure isotherms of copolymers of polystyrene-polyethyleneoxide (PS-PEO) at the air-water interface. The SCMF (single chain meanfield) theory provides a very good agreement with the experiments for the entire range of surface densities and is consistent with the experiments if an adsorption energy per PEO monomer at the air-water interface of about one k(B)T is taken. In addition, the chain density profile has been calculated for a variety of surface densities, from the dilute to the very dense ones. The SCMF approach has been complemented by a mean-field approach in the low density regime, where the PEO chains act as a two-dimensional layer. Both theoretical calculations agree with the experiments in this region.
引用
收藏
页码:365 / 375
页数:11
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