Electrokinetic study of layer-by-layer polyelectrolyte and surfactant adsorbed layers

被引：16

作者：

Ermakova, Tatiana B. ^{[1
]}

Sergeeva, Inessa P. ^{[1
]}

Anuchkina, Anna D. ^{[1
]}

Sobolev, Vladimir D. ^{[1
]}

Churaev, Nikolay V. ^{[1
]}

机构：

[1] AN Frumkin Russian Acad Sci, Lab Thin Liquid Films, Inst Phys Chem & Elektrochem, Leninsky Prospect 31, Moscow 119991, Russia

来源：

CHARACTERIZATION OF POLYMER SURFACES AND THIN FILMS | 2006年 / 132卷

基金：

俄罗斯基础研究基金会;

关键词：

adsorbed layer deformation; adsorption; aging; polyelectrolytes; streaming potential method;

D O I：

10.1007/2882_043

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

Investigations of alternate adsorption regularities of cationic polyelectrolytes a) copolymer of styrene and dimethylaminopropylmaleimide (CSDAPM) and b) poly(diallyldimethylammonium chloride) (PDADMAC) and anionic surfactant - sodium dodecyl sulfate (SDS) on fused quartz surface were carried out by capillary electrokinetic method. The adsorption/desorption kinetics, structure and properties of adsorbed layers for both polyelectrolytes and also for the second adsorbed layer were studied in dependence on different conditions: molecular weight of polyelectrolyte, surfactant and polyelectrolyte concentration, the solution flow rate through the capillary during the adsorption, adsorbed layer formation time. For PDADMAC adsorbed layers evolution of the structure and rheological properties was observed. Adsorption of anionic surfactant leads to the overcharge of preliminarily modified quartz surface by cationic polyelectrolyte and depends on the SDS concentration and prehistory of the first adsorbed layer. The desorption study showed. that in all cases the partial desorption of SDS took place, the value of this desorption depended on the structure of the first adsorbed layer and SDS concentration.

引用

页码：95 / +

页数：2

共 33 条

[1]

Structural forces reflecting polyelectrolyte organization from bulk solutions and within surface complexes [J].