废弃蚕茧中提取并制得易溶性丝胶蛋白（SS）粉末,玉米淀粉（MS）作填充剂,与PVA经水相共混和反复冻融制备了不同配比SS/PVA/MS复合凝胶膜。经红外检测对其结构进行了确认;分别以去离子水和模拟体液（SBF）为介质,考察了SS/PVA质量比及MS含量对膜材料力学性能、溶胀性和降解性的影响。结果显示SS/PVA质量比为3/7,MS含量为18%时,膜的断裂伸长率为最优,拉伸强度可达到较优水平,而通过对MS含量和SS/PVA质量比的调整,可以达到调节复合膜降解速率的目的。
Silk sericin（SS） was extracted from waste cocoon and a series of composite gel-film（CGF） was prepared using SS,polyvinyl alcohol（PVA）,maize starch（MS）,etc.by aqueous phase blending and repeatedly freeze-thaw.IR spectroscopy confirmed the blending structure of CGF.In dissolved medium of deionized water and simulated body liquid（SBF）,the SS/PVA mass ratio and MS content effect on the mechanical property,swelling ratio（SR）,dissolved ratio（DR） of CGF were investigated,respectively.The tensile-strength of CGF was good and its break-elongation can be to achieve optimal when SS/PVA was 3/7 and MS content was 18%.The degradation rate of CGF can be regulated with the adjustment of SS/PVA mass ratio and MS content.
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