Investigations of mixed surfactant systems of lauryl alcohol-based bissulfosuccinate anionic gemini surfactants with conventional surfactants: A fluorometric study

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• 作者：Vinayika Singh ; ^{vinayikaradha@yahoo.co.in" class="auth_mail" title="E-mail the corresponding author} ; Rashmi Tyagi¹ ; ^{rashmi.tyagi@juet.ac.in" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Bis-sulfosuccinate gemini surfactant ; Aggregation number ; Micropolarity ; Electrolyte effect
• 刊名：Journal of Taibah University for Science
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：9
• 期：4
• 页码：477-489
• 全文大小：3411 K

文摘

In this study, fluorescence techniques have been utilized to investigate the association and aggregation properties of aqueous solutions of a pure lauryl alcohol-based bis-sulfosuccinate anionic gemini surfactant (BSGSLA_1,8) with a flexible methylene (CH₂)₈ spacer. In addition to the fluorescence interaction behaviour of surfactant solutions of BSGSLA_1,8 mixed with conventional surfactants, surfactant formulations using the anionic (sodium dodecyl sulphate (SDS)), cationic (cetyl trimethyl ammonium bromide (CTAB)) and non-ionic surfactants (Triton X-100) used in industrial applications were also studied. The aggregation number and micropolarity of the pure and mixed surfactant systems were investigated using steady-state fluorescence spectroscopy. The electrolyte effect of different concentrations of sodium chloride (NaCl) on the aggregation number and micropolarity was also explored for pure BSGSLA_1,8. The best synergistic behaviour of BSGSLA_1,8 was obtained with SDS compared to CTAB and Triton X-100. The maximum reduction of the pyrene intensity ratio (I₁/I₃) was observed with a BSGSLA_1,8 and SDS mixed surfactant solution. The enhanced I₁/I₃ value of the mixed gemini Triton X-100 solution showed that mixed system is not as compact as pure BSGSLA_1,8 surfactant micelles in the non-ionic surfactant.