Affect the Cross Linking Degree and Polymer Composition on the Mechanical Properties of Poly (vinyl alcohol)/ Pullulan Films

Abstract

In this study Cross-linked PVA/Pullulan film was prepared. Cross-linking reaction done by additionof gluteraldehyde at different reaction time (10,30and 60) min. Chemical interaction, mechanical,thermal properties, water solubility and film morphology was studied for cross-linkedPVA/Pullulan, PVA and Pullulan only. Thus FTIR investigated formation of hydrogen bondingbetween pullulan and PVA with (GA). Tensile strength, tensile modulus and elongation (%) atbreak for PVA/Pullulan film was improved with addition of (GA) as the reaction time proceedequivalent with increasing PVA content