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    Influence of Temperature on the Surface Tension of Triton Surfactant Solutions

    Access Status
    Fulltext not available
    Authors
    Nguyen, T.
    Phan, Chi
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Nguyen, T. and Phan, C. 2018. Influence of Temperature on the Surface Tension of Triton Surfactant Solutions. Journal of Surfactants and Detergents. 22 (2): pp. 229-235.
    Source Title
    Journal of Surfactants and Detergents
    DOI
    10.1002/jsde.12228
    ISSN
    1097-3958
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/74546
    Collection
    • Curtin Research Publications
    Abstract

    The surface tension of different Triton surfactants (X-100, X-405, and X-705) with or without adding sodium chloride was measured in the temperature range between 20 and 40°C using the maximum bubble pressure method. Rising temperature reduced the surface tension of Triton surfactants via disrupting the H-bonds between the ethylene oxide (EO) group and water. Increasing the number of the EO groups created the steeper thermal gradient of the surface tension. The data indicated that EO-water bonds are easier to be broken by rising temperature than the water–water H-bonds, with an entropy change of -0.535 J deg-1 per mole of EO. The presence of NaCl decreased the surface tension for all systems. However, NaCl produced a synergistic effect with surfactants on the surface tension.

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