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    Dynamic adsorption of cetyl trimethyl ammonium bromide at decane/water interface

    Access Status
    Fulltext not available
    Authors
    Salamah, A.
    Phan, Chi
    Pham, H.
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Salamah, A. and Phan, C. and Pham, H. 2015. Dynamic adsorption of cetyl trimethyl ammonium bromide at decane/water interface. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 484: pp. 313-317.
    Source Title
    Colloids and Surfaces A: Physicochemical and Engineering Aspects
    DOI
    10.1016/j.colsurfa.2015.08.010
    ISSN
    0927-7757
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/30618
    Collection
    • Curtin Research Publications
    Abstract

    The dynamic adsorption of cetyl trimethyl ammonium bromide (CTAB) was investigated at decane/waterinterface by pendant drop technique. The images were analysed using Axisymmetric Drop Shape Analysissoftware and then were modelled using a new model. The model provided a unique solution for equilib-rium adsorption. Consequently, dynamic data at two different concentrations were fitted simultaneouslyto determine the adsorption parameters. Good fittings have been achieved and then applied to predictdynamic tension at other concentrations. The outcomes revealed a significant increment in term of inter-facial adsorption in comparison with adsorption at the air/water interface. The nature of this increment can be explained by considering the impacts of hydrophobic oil molecules and interfacial layer arrange-ments of alkane/water interfaces. The results can be used to quantify the interaction between alkane and the hydrocarbon tail of ionic surfactants at the oil/water interface.

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