DYNAMIC SURFACE-TENSION OF MICELLAR SOLUTIONS STUDIED BY THE MAXIMUM BUBBLE PRESSURE METHOD .3. THEORY OF THE SOLUTIONS CONTAINING MICELLES

被引:12
作者
DUSHKIN, CD
ILIEV, TH
RADKOV, YS
机构
[1] BULGARIAN ACAD SCI,INST GEOL,BU-1113 SOFIA,BULGARIA
[2] CENT INST CHEM IND,BU-1592 SOFIA,BULGARIA
关键词
DYNAMIC SURFACE TENSION; MICELLAR SURFACTANT SOLUTIONS; MAXIMUM BUBBLE PRESSURE METHOD;
D O I
10.1007/BF00652352
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 theoretical model for the dynamic surface tension of an air bubble expanding in micellar surfactant solution is proposed. The model accounts for the effect of expansion of the bubble surface during the adsorption of surfactant molecules (monomers) and the effect of disintegration of polydisperse micelles on the surfactant diffusion. Assuming small deviations from equilibrium and constant rate of expansion analytical expression for the surface tension and the subsurface concentration of monomers as a function of time is derived. The characteristic time of micellization is computed from the experimental data for two surfactants (sodium dodecyl sulfate and nonylphenol polyglycol ether) obtained by the maximum bubble pressure method.
引用
收藏
页码:370 / 378
页数:9
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