摘要
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.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2012年第4期457-461,共5页
Journal of Functional Materials
基金
国家教育部留学回国人员科研启动基金资助项目(2006CR01)
重庆市人事局留学回国择优基金资助项目(2005CR01)
关键词
丝胶
PVA
玉米淀粉
凝胶膜
降解速率
sericin
polyvinyl alcohol
maize starch
gel-film
degradation rate
