Properties of polyelectrolyte complex films of chitosan and gelatin

✍ Scribed by Yin, Y J; Yao, K D; Cheng, G X; Ma, J B

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 85 KB
• Volume: 48
• Category: Article
• ISSN: 0959-8103
• DOI: 10.1002/(sici)1097-0126(199906)48:6<429::aid-pi160>3.0.co;2-1

✦ Synopsis

A series of chitosan±gelatin complexes was prepared by varying the ratio  of constituents. Differential scanning calorimetry was used to determine the amount of the different states of water. The interaction between chitosan and gelatin was checked by IR and X-ray analysis and was related to mechanical strength. The results indicate that the water take-up of a chitosan±gelatin complex is depressed by strong interactions within networks. Chitosan can improve the tensile strength of complex ®lms, and even with high water content these can keep appropriate tensile strength and higher elongation.