Dynamic surface elasticity of polyelectrolyte solutions

被引：31
|
作者：
Noskov, B. A.
Bilibin, A. Yu.
Lezov, A. V.
Loglio, G.
Filippov, S. K.
Zorin, I. M.
Miller, R.
机构：
[1] MPI Kolloid & Grenzflachenforsch, D-14476 Golm, Germany
[2] St Petersburg State Univ, Fac Chem, St Petersburg 198904, Russia
[3] St Petersburg State Univ, Fac Phys, St Petersburg 198904, Russia
[4] Univ Florence, Dipartimento Chim Organ, I-50019 Florence, Italy
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2007年 / 298卷 / 1-2期
基金：
俄罗斯基础研究基金会;
关键词：
polyelectolyte solutions; surface viscoelasticity; adsorption kinetics; heterogeneous adsorption films;
D O I：
10.1016/j.colsurfa.2006.12.003
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：
Oscillating bubble and drop methods were applied to aqueous solutions of poly(dimethyldiallylammonium chloride) and copolymers of sodium 2acrylamido-2-methyl-1-propansulfonate with acryl amide and N-isopropylacrylamide at various concentrations and ionic strengths. The dynamic surface elasticity was measured as a function of the surface age and non-monotonic kinetic dependencies were observed for some systems. Although solutions of different polyelectrolytes displayed various types of the surface viscoelastic behavior, they all differed strongly from the surface dilational viscoelasticity of non-ionic polymer solutions. At the same time some distinctions with the surface dilational viscoelasticity of sodium poly(styrenesulfonate) solutions were discovered too. They are a consequence of the specific structure of the PSS adsorption films as it had been assumed earlier.
引用
收藏
页码：115 / 122
页数：8
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