کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
202333 460598 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modulating the aggregation behavior of aqueous sodium dodecylsulphate (SDS) with addition of trisubstituted imidazolium based ionic liquid 1-butyl-2,3-dimethylimidazolium tetrafluoroborate [bdmim][BF4]
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Modulating the aggregation behavior of aqueous sodium dodecylsulphate (SDS) with addition of trisubstituted imidazolium based ionic liquid 1-butyl-2,3-dimethylimidazolium tetrafluoroborate [bdmim][BF4]
چکیده انگلیسی

The aggregation behavior of an anionic surfactant sodium dodecylsulphate (SDS) in aqueous system in the presence of 1-butyl-2,3-dimethylimidazolium tetrafluoroborate [bdmim][BF4], a trisubstituted ionic liquid (IL) has been studied. Critical micelle concentrations (cmcs) were determined from conductance measurements at a temperature range of 298.15–318.15 K and using fluorescence probe at different wt% of IL. Results obtained from these methods are in good agreement with each other. An increase in cmc was observed for all the studied systems with increase in temperature as well as with increase in wt% of IL. Further the degree of dissociation, α   and thermodynamic parameters viz. free energy of micellization, ΔGmo and entropy of micellization, ΔSmo has been evaluated. The aggregation number, Nagg of aqueous SDS micelles in the absence and presence of different wt% of [bdmim][BF4] is determined by fluorescence quenching of pyrene. 1H NMR measurements of post-micellar solutions have also been done to understand the different inter-molecular interactions of surfactant molecules in [bdmim][BF4].

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 375, 15 August 2014, Pages 23–29
نویسندگان
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