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    Preparation and Characterization of Chitosan/Poly(Vinyl Alcohol) Blended Films: Mechanical, Thermal and Surface Investigations

    Year: 2011

    Journal: E-Journal of Chemistry, 2011, 8(1), 91-96, 20111221

    Authors: ESAM A. EL-HEFIAN §* , MOHAMED MAHMOUD NASEF and ABDUL HAMID YAHAYA §

    Organizations: § Department of Chemistry, Faculty of Science University of Malaya, 50603 Kuala Lumpur, Malaysia, Chemical Engineering Department Faculty of Chemical and Natural Resources Engineering Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia

    In this study, blends of chitosan (CS) and polyvinyl alcohol (PVA)
    (CS/PVA) having various proportions were prepared and characterized by
    universal mechanical tester, the differential scanning calorimetry (DSC) and
    contact angle measurements. Studying the mechanical properties of the films
    showed that blending improved the tensile strength, which increased with
    increasing PVA content up to 40% while the elongation% at break of the
    blends was decreased compared to that of the pure components. The obtained
    results of DSC suggested that some interaction between chitosan and PVA
    mostly took place. Static water contact angle measurements showed an
    improvement in the wettability of the obtained films.