虎纹捕鸟蛛丝蛋白/丝素复合纤维的结构与力学性能  

Structure and mechanical properties of electrospun Ornithoctonus huwenna spidroin/silk compound fiber

作　　者：张敏[1] 张野妹[1] 朱仁宽[1] 吴维[1] 张爱丽[1] 潘志娟[1,2] 

机构地区：[1]苏州大学纺织与服装工程学院,江苏苏州215006 [2]苏州大学现代丝绸国家工程实验室,江苏苏州215123

出　　处：《纺织学报》2011年第8期1-6,共6页Journal of Textile Research

基　　金：苏州市科技计划项目(SYJG0909)

摘　　要：以虎纹捕鸟蛛丝/六氟异丙醇(HFIP)和丝素/HFIP的混合液为纺丝液,制备了虎纹捕鸟蛛丝蛋白/丝素复合纳米纤维,并通过SEM、FT-IR、XRD研究蜘蛛丝蛋白和丝素的混合比例对纤维形态结构、分子构象、结晶结构的影响,分析蜘蛛丝蛋白对静电纺丝素纤维的力学增强效应。结果表明:随蛛丝蛋白含量的增加,复合纤维的平均直径明显减小,直径小于300 nm的纤维数量增加;添加一定量的蜘蛛丝蛋白有助于改善静电纺丝素纤维毡的力学性能。FT-IR和XRD谱图都表明,蜘蛛丝蛋白的质量分数对复合纤维中β-折叠、无规卷曲、α-螺旋和β-转角构象分子的含量均无规律性的影响。Spidroin / silk composite nano-fibers were obtained by electrospinning of the mixed solution of Ornithoctonus huwenna spider silk / 1,1,1,3,3,3,-hexafluoro-2-propanol（HFIP） and silk / HFIP.The effect of mixing ratio of spidroin and silk on the morphology,molecular conformations,and crystallinity of the electrospun fibers were investigated by means of SEM,FT-IR,XRD,and the enhancement effect of spidroin on the mechanical property of the electrospun fibers were analyzed.The results indicated that increasing the content of spidroin attenuated the fiber diameter significantly and increased the number of fibers with a diameter 300 nm.Addition of certain amount of spidroin is beneficial to the improvement of the mechanical property of the electrospun silk fiber mat.The FT-IR and XRD analyses showed that the mass fraction of spidroin has no regular influence on the content of conformation molecules,such as β-fold,random crimp,α-spiral and β-angle,of the fiber.

关 键 词：蜘蛛丝蛋白 丝素 静电纺丝 纤维直径 聚集态结构 力学性能 

分 类 号：TS102.3[轻工技术与工程—纺织工程]