Micellization and surface activity of Triton X-100 in water-orthophosphoric medium

被引:2
|
作者
Ouni, S [1 ]
Hafiane, A [1 ]
Dhahbi, M [1 ]
机构
[1] INRST, Lab Physicochim Interfaces, Hammam Lif 2050, Tunisia
关键词
surface tension; non-ionic surfactant; micellization; orthophosphoric acid;
D O I
10.1016/S1387-1609(00)00155-9
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The adsorption isotherms of Triton X-100 for air/water-orthophosphoric acid interfaces were determined by the stripping method. The surface chemical parameters, Gamma(max), F and Delta G(A)(o), and the aggregation ones, CMC and the Delta G(M), are determined in different H2O/H3PO4 mixtures. For concentrations higher than 4 M, the values of the CMC, Delta G(M), Gamma(max), and Delta G(A)(o) increase with increasing acid concentrations due to the occurring changes in the medium structure. (C) 2000 Academie des sciences/ Editions scientifiques et medicales Elsevier SAS.
引用
收藏
页码:353 / 358
页数:6
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