Effect of deposition parameters on the wettability and microstructure of superhydrophobic films with hierarchical micro–nano structures

Bharathibai, Basu J and Manasa, J (2011) Effect of deposition parameters on the wettability and microstructure of superhydrophobic films with hierarchical micro–nano structures. Journal of Colloid and Interface Science, 368 . pp. 655-662.

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    Abstract

    Superhydrophobic films with hierarchical micro–nano structures were deposited on glass substrates by solution immersion method from a solution containing cobalt chloride, urea and cetyl trimethyl ammonium bromide (CTAB). Subsequently the films were hydrophobized with a low surface energy material like octadecanoic acid under ambient conditions resulting in superhydrophobic surfaces with water contact angle (WCA) of about 168_ and contact angle hysteresis of 1_. The effect of deposition parameters such as solution composition, temperature, deposition time and alkanoic acid treatment on surface morphology and wettability of the films was studied. Mechanism of formation of cobalt chloride carbonate hydroxide film is discussed. Addition of CTAB to the solution resulted in a change in the surface morphology of the deposited films with flower-like structures. The wettability of films obtained under different process conditions was correlated to surface roughness using Wenzel and Cassie models

    Item Type: Journal Article
    Uncontrolled Keywords: Superhydrophobic Solution immersion Water contact angle (WCA) Sliding angle Surface morphology
    Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
    Division/Department: Surface Engineering Division, Surface Engineering Division
    Depositing User: Ms Indrani V
    Date Deposited: 21 Sep 2012 13:56
    Last Modified: 21 Sep 2012 13:56
    URI: http://nal-ir.nal.res.in/id/eprint/10932

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