کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
203880 | 460683 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Activity coefficients at infinite dilution for surfactants
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Activity coefficients at infinite dilution for surfactants Activity coefficients at infinite dilution for surfactants](/preview/png/203880.png)
چکیده انگلیسی
A new alternative is presented for activity coefficients at infinite dilution determination via surface tension data of low vapour pressure substances. It was found that experimental data for surfactants follows Volmer's surface equation of state behaviour over the diluted region until the critical micelle concentration. The key operations are: the choice of the same standard conditions for the bulk and the surface phases, the combination of Gibbs and Volmer equations and the use of the symmetric activity coefficients convention. An exact relation between the activity coefficient at infinite dilution and the reciprocal of the critical micelle mole fraction was found which allowed us the verification of the model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 250, Issues 1–2, 20 December 2006, Pages 158–164
Journal: Fluid Phase Equilibria - Volume 250, Issues 1–2, 20 December 2006, Pages 158–164
نویسندگان
Josefina Viades-Trejo, Alfredo Amigo, J. Gracia-Fadrique,