Adsorption of sodium dodecyl sulfate and sodium dodecyl benzenesulfonate on poly(vinyl chloride) latexes

被引：31
|
作者：
Vale, HM [1 ]
McKenna, TF [1 ]
机构：
[1] ESCPE Lyon, LCPP, CNRS, F-69616 Villeurbanne, France
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2005年 / 268卷 / 1-3期
关键词：
adsorption isotherm; Langmuir isotherm; latex; poly(vinyl chloride); tensiometry;
D O I：
10.1016/j.colsurfa.2005.05.061
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：
The adsorption of sodium dodecyl sulfate (SDS) and sodium dodecyl benzenesulfonate (SDBS) on poly(vinyl chloride) (PVC) latex particles was investigated. Conductometric titrations were performed to determine the area per surfactant molecule at various temperatures (20-50 degrees C) and the adsorption isotherms of both emulsifiers were determined at 20 degrees C from surface tension titration curves. The adsorption data show some deviation with respect to the Langmuir isotherm due to their slight S-shape. The data can nevertheless be fitted very well with a limiting form of the general adsorption equation proposed by Zhu and Gu [B.-Y. Zhu, T. Gu, Adv. Colloid Interface Sci. 37 (1991) 1]. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：68 / 72
页数：5
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