Title of article :
Dynamic properties of CnTAB adsorption layers at the water/oil interface
Author/Authors :
Mucic، نويسنده , , N. and Kovalchuk، نويسنده , , N.M. and Pradines، نويسنده , , V. and Javadi، نويسنده , , A. and Aksenenko، نويسنده , , E.V. and Krنgel، نويسنده , , J. and Miller، نويسنده , , R.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Abstract :
The dynamic interfacial tension and dilational rheology of alkyltrimethylammonium bromides (CnTAB) solutions are studied for n = 10, 12, 14 and 16 using drop profile analysis and capillary pressure tensiometry. The experimental data are analyzed on the basis of two theoretical models, the Frumkin Ionic Compressibility and the Langmuir Compressibility models [1]. We show that even the simplified Langmuir Compressibility model is able to adequately describe the dynamic properties of the investigated ionic surfactants. Dynamic experiments point out the difficulties related to short chain surfactants due to their very fast adsorption kinetics which cannot be studied with conventional tensiometer setups.
Keywords :
Dynamic interfacial tension , Thermodynamic models , Dilational rheology , Cationic surfactants , water/hexane interface , Drop profile analysis tensiometry , Capillary pressure tensiometry , Alkyltrimethylammonium bromide
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects
