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E-Journal of Chemistry
Volume 8, Issue 1, Pages 91-96

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

Esam A. El-Hefian,1 Mohamed Mahmoud Nasef,2 and Abdul Hamid Yahaya1

1Department of Chemistry, Faculty of Science University of Malaya, -50603 Kuala Lumpur, Malaysia
2Chemical Engineering Department Faculty of Chemical and Natural Resources Engineering, Universiti Teknologi Malaysia, -81310 UTM Skudai, Johor, Malaysia

Received 27 April 2010; Accepted 17 June 2010

Copyright © 2011 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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.