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Miscibility and Biodegradability of Silk Fibroin/Carboxymethyl Chitin Blend Films

✍ Scribed by Panya Wongpanit; Yasuhiko Tabata; Ratana Rujiravanit

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
754 KB
Volume
7
Category
Article
ISSN
1616-5187

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✦ Synopsis

Abstract

Blend films of silk fibroin and carboxymethyl chitin were prepared by solution casting using water as a cosolvent. The blend films were subjected to post‐treatment with an aqueous methanol solution to induce β‐sheet formation of silk fibroin. The miscibility of the blend films both before and after methanol treatments was investigated in terms of chemical interactions, morphologies, thermal properties, and crystal structures by using FTIR spectroscopy, SEM, DSC, and XRD. The results indicate that the blend between silk fibroin and CM‐chitin was semi‐miscible because only the amorphous parts of the polymers were compatible with each other. The enzymatic degradation showed that the incorporation of CM‐chitin enhanced biodegradability and swelling ability of silk fibroin.

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