期刊
JOURNAL OF SURFACTANTS AND DETERGENTS
卷 16, 期 4, 页码 587-599出版社
WILEY
DOI: 10.1007/s11743-012-1427-z
关键词
Cationic surfactants; Nonionic surfactants; Surface tension; Fluorescence; Dynamic light scattering; Aggregation number; Synergism
资金
- Council of Scientific Indian Research (CSIR), New Delhi, India
Micellar and interfacial properties of mixed surfactant systems comprising benzalkonium chloride, a cationic surfactant and nonionic polyoxyethylene alkyl ether surfactants (POE: C10E7, C10E8, C10E9, C10E10) have been investigated by surface tension, fluorescence and dynamic light scattering techniques. Critical micelle concentration (CMC) for different mixing mole fractions has been investigated by surface tension and fluorescence measurements. Ideal CMC, mixed micellar composition (X-1(m), X-1(sigma)), interaction parameters for mixed micelles (beta(m)) and adsorption monolayer (beta(sigma)), surface excess concentration (Gamma(max)), minimum area per molecule (A(min)) and related thermodynamic properties have also been determined. Lowering of the CMC and negative interaction parameter values indicate synergism in the mixed micelle and monolayer formed, whereas, thermodynamic parameters evaluated for the proposed mixed systems indicate stability of the resulting micelles and monolayer. Micellar aggregation number (N-agg) and hydrodynamic diameter (D-h) computed from fluorescence and dynamic light scattering measurements respectively illustrate micellar growth in the mixed state. Results obtained for the proposed mixed systems can be helpful in designing smart materials for industrial surfactant based formulations.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据