Title of article :
Dynamic interfacial tension of triblock copolymers solutions at the water–hexane interface
Author/Authors :
Ramيrez، نويسنده , , P. and Muٌoz، نويسنده , , J. and Fainerman، نويسنده , , V.B. and Aksenenko، نويسنده , , E.V. and Mucic، نويسنده , , N. and Miller، نويسنده , , R.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
6
From page :
119
To page :
124
Abstract :
Equilibrium and dynamic surface tension of non-ionic triblock copolymers, Pluronics, varying in the number of poly(ethylene oxide) and poly(propylene oxide) groups have been measured by means of drop profile tensiometry at the water–hexane interface. perimental data have been explained on the basis of a theory previously developed for protein solutions [1]. This model assumes the coexistence of different adsorbed states at the interface, depending on the surface coverage. It has been shown that the best fit is achieved when a polylayer adsorption is considered. Reasonable values of the adsorption layer thickness and realistic values of the diffusion coefficient are obtained which validate the model proposed.
Keywords :
Water–hexane interface , Pluronics , Adsorption isotherm , Adsorption kinetics , Multilayer formation
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects
Serial Year :
2011
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects
Record number :
1940964
Link To Document :
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