以羽毛角蛋白(FK)和聚乙烯醇(PVA)为原料,水为溶剂,通过静电纺丝技术制备了FK/PVA复合纳米纤维膜.探讨了复合纳米纤维中FK与PVA的相容性,研究了FK的添加对纤维膜微观形貌、结晶度、热稳定性、亲水性等性能的影响.SEM结果表明,在聚合物总质量分数为14％的条件下制备的FK/PVA复合纳米纤维,表面平整光滑,平均直径为250～320 nm,FK含量越大,直径越小.FTIR结果表明,FK与PVA具有良好的相容性,分子间存在氢键作用力.XRD结果表明,FK的加入破坏了PVA分子的规整排列,复合纳米纤维膜的结晶度下降.TG分析与接触角测试结果表明,随着体系中FK配比的增大,复合纳米纤维膜的热稳定性和亲水性均得到提高.%Feather keratin (FK)/PVA composite nanofibrous membranes were prepared through an electrospinning process,using water as solvent.The interaction and compatibility between FK and PVA,as well as the effect of incorporating FK on the morphology,crystallinity,thermal stability and hydrophilicity of the composite nanofibrous membranes were evaluated.At a total polymer concentration of 14％,the prepared nanofibers were smooth,bead-free and the average diameter was in the range of 250-320 nm.The more FK was added,the lower fiber diameter was obtained.The favorable compatibility and strong interactions between FK and PVA were confirmed by FTIR analysis.XRD analysis indicated that the arrangement of PVA chain in the composite nanofibrous membranes was disturbed by the incorporation of FK,resulting the decrease of crystallinity.According to TG and contact angle analysis,the thermal stability and hydrophilicity of the composite nanofibers were both enhanced by increasing the FK content.
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