Preparation and characterization of microwave-treated carboxymethyl chitin and carboxymethyl chitosan films for potential use in wound care application.

Abstract

CM-chitin and CM-chitosan films were successfully crosslinked by microwave treatment. Crosslinking of the microwave-treated CM-chitin films involved mainly the carboxylate and the secondary alcohol groups, while crosslinking of microwave-treated CM-chitosan films involved the carboxylate and the amino groups. In addition, the crystallinity of CM-chitin increased with increasing microwave treatment time, whereas an increase in the crystallinity of the microwave-treated CM-chitosan films was not observed. At a similar percentage of weight loss, the crosslinking of either CM-chitin or CM-chitosan films by microwave treatment required much less stringent condition when compared with the crosslinking by autoclave treatment. Based on both direct and indirect cytotoxicity assays, the cytotoxicity of the microwave-treated CM-chitin films was negative, while that of the microwave-treated CM-chitosan films was positive. Human fibroblasts adhered on the surface of microwave-treated CM-chitosan films much better than on the surface of microwave-treated CM-chitin films.

• Authors: Panya Wongpanit, Neeracha Sanchavanakit, Prasit Pavasant, Pitt Supaphol, Seiichi Tokura, Ratana Rujiravanit
• Journal: Macromolecular bioscience (Macromol Biosci) Vol. 5 Issue 10 Pg. 1001-12 (Oct 20 2005) ISSN: 1616-5187 [Print] Germany
• PMID: 16208633 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Biocompatible Materials
• Chitin
• O-(carboxymethyl)chitin
• Chitosan

Topics

• Animals
• Biocompatible Materials (chemistry)
• Cell Adhesion
• Cells, Cultured
• Chitin (analogs & derivatives, chemistry)
• Chitosan (chemistry)
• Fibroblasts
• Gingiva (cytology)
• Humans
• L Cells
• Mice
• Microwaves
• Penaeidae (chemistry)
• Spectroscopy, Fourier Transform Infrared
• Wound Healing