| 表面活性剂溶液在石英上的吸附和润湿(英文) |
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| 引用本文： | 潘传斌,朱.表面活性剂溶液在石英上的吸附和润湿(英文)[J].北京大学学报(自然科学版),1990(2). |
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| 作者姓名： | 潘传斌 朱 |
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| 作者单位： | 北京大学物理化学研究所
(潘传斌，朱(王步)瑶)，北京大学物理化学研究所(顾惕人) |
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| 摘 要： | 非离子型表面活性剂TX 100和TX305,以及阳离子型表面活性剂溴化烷基三甲铵、氯化烷基吡啶和溴化烷基吡啶的水溶液在石英片上的接触角θ~0(石英/水/环己烷悬滴)和θ~n(石英/水/空气悬泡)随浓度的增加皆是先升后降;但θ~w(石英/水滴/环己烷)则随浓度单调增大,最后趋于一极限值。这些结果可以表面活性剂在石英/水界面形成双层吸附和在石英/环己烷界面形成单层吸附的模型来解释。阴离子型表面活性剂烷基硫酸钠在石英上不吸附,故对接触角无影响。但在TX100溶液中加入烷基硫酸钠时,θ~0和θ~w皆随TX100的浓度单调上升;加入的量大时,θ~0、θ~w和θ~a皆近于纯水的θ。这些现象与溶液中形成混合胶团导致TX100的吸附减少有关。
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| 关 键 词： | 润湿 接触角 吸附 表面活性剂 石英 单层模型 双层模型 |
Wetting and Adsorption of Surfactant Solution on Quartz |
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| PAN Chuanbin,ZHU Buyao,GU Tiren.Wetting and Adsorption of Surfactant Solution on Quartz[J].Acta Scientiarum Naturalium Universitatis Pekinensis,1990(2). |
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| Authors: | PAN Chuanbin ZHU Buyao GU Tiren |
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| Institution: | Institute of Physical Chemistry |
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| Abstract: | The contact angles of solutions of various type surfactants (including nouionics, cationics, anionics and the mixtures of anionic-nonionics) for quartz/water/cyclohexane and quartz/water/air systems have been measured. Based on the bilayer model for the surfactant (including nonionics and cationics) adsorption on the quartz/water interface, the monolayer model for the surfactant adsorption on the quartz/cyclohexane interface, and the fact that no significant adsorption of nonionic surfactants on quartz could be detected, the experimental results have been explained qualitatively. |
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| Keywords: | Wetting Contact angle Adsorption Surfactant Quartz Monolayer model Bilayer model |
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