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标题：Effect of methanol on the surface tension and viscosity of sodiumdodecyl sulfate (SDS) in aqueous medium at 298.15–323.15 K
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作者：Tulasi Prasad Niraula ; Tulasi Prasad Niraula ; Sujit Kumar Shah 等
期刊名称：Karbala International Journal of Modern Science
印刷版ISSN：2405-609X
电子版ISSN：2405-609X
出版年度：2018
卷号：4
期号：1
页码：26-34
DOI：10.1016/j.kijoms.2017.10.004
语种：English
出版社：Elsevier
摘要：AbstractThe surface tension and viscosity of sodiumdodecyl sulfate (SDS) in water and in 0.10, 0.20, 0.30 and 0.40 volume fractions of methanol in water at 298.15 K, 308.15 K, 318.15 K and 323.15 K are measured. The critical micelle concentrations (CMCs) of the solutions are determined from both the surface tension and viscosity. The critical micelle concentrations (CMC) of SDS in water as well as in methanol-water mixture are found to increase with increase in temperature. The CMC of SDS increases with the addition of methanol. The surface properties, such as the surface excess concentrationГmax, minimum surface areaAmin, surface pressureπcmcand packing parameterPare calculated from the surface tension data. ViscosityBcoefficients of the SDS solutions are calculated using the relative viscosity data.
关键词：Surface tension;Viscosity;Sodiumdodecyl sulfate;Critical micelle concentration