Alcohols Effect on Critic Micelle Concentration of Polysorbate 20 and Cetyl Trimethyl Ammonium Bromine Mixed Solutions

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• 作者：Taliha Sidim (1)
  G枚khan Acar (1)
  
• 关键词：Surface tension ; Conductivity ; Critical micelle concentration ; Nonionic surfactants
• 刊名：Journal of Surfactants and Detergents
• 出版年：2013
• 出版时间：July 2013
• 年：2013
• 卷：16
• 期：4
• 页码：601-607
• 全文大小：297KB
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• 作者单位：Taliha Sidim (1)
  G枚khan Acar (1)
  
  1. Department of Chemistry, Faculty of Science, Trakya University, Edirne, Turkey
  
• ISSN：1558-9293

文摘

In this research, the micellar behavior of a cationic surfactant, cetyl trimethyl ammonium bromide (CTAB) and an nonionic surfactant, polysorbate 20 (Polyoxyethylene (20) sorbitan monolaurate) in different alcohol solutions media was investigated over the temperature range 293.15鈥?13.15聽K. The interaction between two surfactants in binary systems can be determined by calculating the values of their 尾 parameters. The critical micelle concentrations (CMC) of the micelles were determined from the surface tension, the conductivity at different temperatures. The CMC behavior of CTAB and polysorbate 20 was analyzed in terms of the effect of temperature and the increase in the alcohol carbon chain. Changes in the critical micelle concentration of mixed surfactant systems of different alcohol solutions were measured. The CMC decreased sharply as the hydrocarbon chain length of the alcohols becomes larger. This shows that the more hydrophobic alcohols are, the more marked a decrease in CMC is observed.