Study on the properties of the gelatin modified chitosan film

According to the compatibility of chitosan and gelatin,chitosan film and chitosan/gelatin blend film were prepared.The influence of gelatin content increase on the film strength,the tensile displacement,dissolution rate,and water absorption rate was investigated.The microscopic structure of film was analyzed by IR spectrum and X-ray diffraction.The compatibility of chitosan with gelatin and the interaction of the intermolecules of the complex system were discussed.The tensile strength and the tensile elongation of modified chitosan film reached the maximum value when the gelatin content was 30% and 10%,respectivley.The water absorption rate of the modified film decreased minimum when the gelatin content was 20%.And the dissolution rate increased with the gelatin content increasing.