Dynamic interfacial dilational properties of hydroxy-substituted alkyl benzenesulfonates
Dynamic interfacial dilational properties of hydroxy-substituted alkyl benzenesulfonates
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DOI：
10.1021/jp070997t
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发表时间：
2007-05-24
影响因子：
3.3
通讯作者：
Yu, Jia-Yong
中科院分区：
文献类型：
--
作者：
Huang, Yu-Ping;Zhang, Lei;Yu, Jia-Yong
羟基取代烷基苯磺酸盐、2-羟基-3-癸基-5-辛基苯磺酸钠 (C(10)C(8)OHphSO(3)Na) 和 2-羟基-3-辛基-5-癸基苯磺酸钠的合成、表征和界面性质 报道了(C(8)C(10)OHphSO(3)Na)。通过气泡/液滴振荡法在水-空气和水-癸烷界面上阐述了表面活性剂的动态膨胀特性。在某些情况下，膨胀模量随时间的曲线会出现明显的最大值，这被认为是由于表面活性剂构象和表面层排列的变化所致。我们的结果表明，动态界面膨胀特性的测量是探测表面活性剂吸附膜结构的有力工具。
Synthesis, characterization, and interfacial properties of hydroxy-substituted alkyl benzenesulfonates, sodium 2-hydroxy-3-decyl-5-octylbenzenesulfonate (C(10)C(8)OHphSO(3)Na) and 2-hydroxy-3-octyl-5-decylbenzenesulfonate (C(8)C(10)OHphSO(3)Na), are reported. The dynamic dilational properties of the surfactants are expounded by means of oscillating the bubble/drop method at both water-air and water-decane interfaces. The distinct maxima appear in dilational modulus vs time curves in some cases, which is believed to be attributed to the change of surfactant conformation and the arrangement of surface layer. Our results show that the measurement of dynamic interfacial dilational properties is a powerful tool to probe the structure of the surfactant adsorption film.