Title: Effect of Alcohols in AOT Reverse Micelles. A Heat Capacity and Light Scattering Study
Abstract: Apparent molar heat capacities at 25 °C of a series of 1-alcohols and three branched alcohols were determined in mixtures of the type alcohol + (p wt % AOT + n-decane) at R = 0 and 10, R being the water−surfactant molar ratio [W]/[S]. For methanol and 1-hexanol, the measurements were done for different p values as a function of alcohol concentration. For all the other alcohols p = 5. Heat capacities for the binary (AOT + nC10) and the ternary (AOT + W + nC10) mixtures, as well as for 1-hexanol in a 5 wt % solution of dioctyl succinate, were also measured at 25 °C. For all alcohols + AOT + n-decane, kinematic viscosities and dynamic light scattering (DLS) were measured at 25 °C for R = 10 and p = 13 as a function of alcohol concentration. DLS was also measured for the ternary mixture AOT + W + nC10 with R = 10 at 25 °C. A reasonable molecular picture of the alcohol−AOT interactions in the presence and absence of reverse micelles emerges from the experimental DLS and heat capacity results, the latter having...
Publication Year: 1997
Publication Date: 1997-09-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 51
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