Abstract
Silk fibroin (SF) and poly(acrylic acid)(PAA) can interact when their aqueous solutions were mixed. Viscometric study showed that SF/PAA complex formation depended on the ratios of SF and PAA in dilute solution. SF/PAA complexes varied from soluble state to gel and to precipitate when both concentrations of mixed solution were increased gradually. FT-IR results showed that PAA and SF were liable to form interpolymer hydrogen bonds, and SF conformation changed in the complexes. FT-IR spectra also suggested the formation and crystal perfection of PAA/SF complex crystal relied on the ratios of SF and PAA, which were confirmed by the observation of X-ray diffraction.
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Gao, Q., Shao, Z., Sun, Y. et al. Complex Formation of Silk Fibroin with Poly(acrylic acid). Polym J 32, 269–274 (2000). https://doi.org/10.1295/polymj.32.269
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DOI: https://doi.org/10.1295/polymj.32.269
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