Abstract
FT-IR spectroscopy was utilized to study the specific interactions in silk fibroin (SF) and poly(potassium acrylate) (PAA-K) blends. Combining the study of model complexes, e.g., mixtures of SF with KCl, KBr, and ZnCl2, It is suggested that two kinds of specific interaction exist in the SF/PAA-K blends. One is hydrogen bonding between the C = O group of PAA-K and groups of electron acceptor in SF, and the other is the electrostatic interaction in K+-amide specific coordination complex. The final result is probably the coexistence of these two mechanisms of specific interaction in the SF/PAA-K blends. DSC results also show that SF and PAA-K could be mixed significantly.
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Shao, Z., Sun, Y., Zhou, P. et al. Specific Interactions in Silk Fibroin–Poly(potassium acrylate) Blends. Polym J 31, 470–475 (1999). https://doi.org/10.1295/polymj.31.470
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DOI: https://doi.org/10.1295/polymj.31.470