Table of Contents
Indian Journal of Materials Science
Volume 2013, Article ID 307514, 7 pages
Research Article

Preparation and Characterization of HPMC/PVP Blend Films Plasticized with Sorbitol

1Department of Physics, Yuvaraja’s College, Mysore 570 005, India
2Department of Polymer Science, Sir M.V.P.G. Centre, Mandya 571 402, India
3Department of Studies in Physics, Manasagangotri, Mysore 570 006, India

Received 18 August 2013; Accepted 24 September 2013

Academic Editors: A. K. Bajpai and U. De

Copyright © 2013 H. Somashekarappa et al. 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.


The aim of this present work is to investigate the effect of plasticizers like Sorbitol on microstructural and mechanical properties of hydroxypropyl methylcellulose (HPMC) and Polyvinylpyrrolidone (PVP) blend films. The pure blend and plasticized blend films were prepared by solution casting method and investigated using wide angle X-ray scattering (WAXS) method. WAXS analysis confirms that the plasticizers can enter into macromolecular blend structure and destroy the crystallinity of the films. FTIR spectra show that there are a shift and decrease in the intensity of the peaks confirming the interaction of plasticizer with the blend. Mechanical properties like tensile strength and Young’s Modulus decrease up to 0.6% of Sorbitol content in the films. Percentage of elongation at break increases suggesting that the plasticized films are more flexible than pure blend films. These films are suitable to be used as environmental friendly and biodegradable packaging films.