Studies on the Thermomechanical Characteristics of the Blend Film of Chitosan/Gelatin

摘要

Compatability of films made of chitosan, gelatin, and their blends prepared by aqueous solution casting was investigated using a thermogravimetric analyzer (TGA) and a dynamic mechanical analyzer (DMA). TGA showed gelatin is more thermally stable thanchitosan, and thermal stability of chitosan in blends was higher than that of pure chitosan due to interaction among functional groups of component polymers in blend. Glass transition temperature (T_g) of blends was dependent on chitosan content of blends. Blend films exhibited good miscibility. Moisture and glycerol contents of blend strongly affected thermal properties of two component polymers.