Abstract
The physical state of water, absorbed in silk fibroin (SF)/S-carboxymethyl kerateine (SCMK) blend films, was studied by differential scanning calorimetry (DSC) to investigate the change of internal structures of the blend films. The amount of non-freezing bound water in the blend film was decreased with the addition of SCMK because of the change in the secondary structure of SF from random coil form to β-structure form. This transition could be also monitored by thermal analysis using DSC. The maximum change of the secondary structure was observed at a blend ratio of 50/50 (wt/wt).
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