Evaluation of Cross-Linked Chitosan as Filler for Thermal Properties of Chitosan-Based Biocomposites

Abstract

A series of cross-linked chitosan (XCs)-filled chitosan (Cs) matrix, with filler contents of 0 to 12 wt/v% were fabricated using a casting method. Thermal properties of the composites were examined using thermogravimetry (TG), differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). Addition of XCs to 10 wt/v% increased 2.7% on thermal properties of Cs film. Consequently, the glass transition temperature (T_g) is enhanced from 51 to 58°C for a similar composition of XCs. Results could be related to good interfacial interactions of Cs matrix and XCs filler through formation of interhydrogen bonds and electrostatic interactions.

Keywords:

• Chitosan
• Composites
• Thermal properties

ACKNOWLEDGMENTS

Appreciation is given to the Fundamental Research Grant Scheme (FRGS: Grant No. 6070027) under Malaysia's Ministry of Science, Technology and Innovation (MOSTI), for the funding this research. The first author also wishes to acknowledge the National Science Fellowship (NSF) under MOSTI, Malaysia.