Adsorption kinetics of sodium dodecyl sulfate on perturbed air-water interfaces

被引：11

作者：

Casandra, Alvin ^{[1
]}

Chung, Meng-Chen ^{[2
]}

Noskov, Boris A. ^{[3
]}

Lin, Shi-Yow ^{[1
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, 43 Keelung Rd,Sec 4, Taipei 106, Taiwan

[2] TransWorld Univ, Dept Biotechnol, 1221 Zhennan Rd, Touliu 640, Yunlin, Taiwan

[3] St Petersburg State Univ, Dept Colloid Chem, Univ Pr 26, St Petersburg 198504, Russia

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2017年 / 518卷

关键词：

Adsorption kinetics; Sodium dodecyl sulfate; Ionic surfactant; Dynamic surface tension; Perturbed interface; DYNAMIC SURFACE-TENSION; IONIC SURFACTANT; SDS; DESORPTION; MONOLAYERS; DODECANOL; CAPILLARY; MIXTURES; ENERGIES; COLLAGEN;

D O I：

10.1016/j.colsurfa.2017.01.043

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：

A pendant bubble tensiometer was used to measure the relaxation of the surface tensions of aqueous sodium dodecyl sulfate (SDS) solutions for four different perturbed air-water interfaces under surface rinsing, sudden surface compression, continuous surface expansion and compression. The complete set of surface tension (ST) relaxations was monitored to study the adsorption kinetics of SDS. The ST increased in the surface rinsing experiment, and this increase indicated that the SDS that was adsorbed at the air-water interface desorbed from the interface. The ST relaxed continuously after sudden surface compression, and this continuous ST relaxation indicated that the desorption rate of SDS molecules was faster than the surface compression rate. The ST remained a constant value during the continuous surface expansion and surface compression, and this constant ST data indicated that the adsorption and desorption rates were faster than the surface perturbation rate in this study.

引用

页码：241 / 248

页数：8

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