CHARACTERIZATION OF WATER-CONTAINING REVERSED MICELLES BY VISCOSITY AND DYNAMIC LIGHT-SCATTERING METHODS
CHARACTERIZATION OF WATER-CONTAINING REVERSED MICELLES BY VISCOSITY AND DYNAMIC LIGHT-SCATTERING METHODS
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DOI：
10.1039/f19797500132
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发表时间：
1979-01-01
期刊：
影响因子：
--
通讯作者：
DOHERTY, JV
中科院分区：
文献类型：
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作者：
DAY, RA;ROBINSON, BH;DOHERTY, JV
用粘度法和动态光散射法测定了气溶胶- ot + H2O +有机溶剂体系形成的反胶束的大小和聚集数。对于粘度法，描述了从变密度颗粒中推导聚集数值的过程。测定了环己烷、甲苯和氯苯的含量。基于光子相关光谱的动态光散射方法得到了单指数相关函数，由此可以推导出平移扩散系数和胶束半径的值。液滴的大小主要取决于表面活性剂与水的浓度比，但在固定的表面活性剂与水的浓度比下，液滴的大小与溶剂和浓度无关。本文所讨论的两种方法与先前描述的一种方法（沉降超离心法）一致。
The size and aggregation number of reversed micelles formed by the system aerosol-OT + H2O + organic solvent have been determined by viscosity and dynamic light scattering methods. For the viscosity method, a procedure for deriving values of the aggregation number from particles of variable density is described. Measurements were made in cyclohexane, toluene and chlorobenzene. The dynamic light scattering method, based on photon correlation spectroscopy, yields single exponential correlation functions from which values of the translational diffusion coefficient and the micelle radius can be derived. The droplet size was found to depend primarily on the ratio of surfactant to water concentrations, but was essentially independent of solvent and concentration at a fixed surfactant to water concentration ratio. Satisfactory agreement was obtained among the two methods discussed in this paper and one (sedimentation ultracentrifugation) described previously.