两种不同功能蜘蛛丝的物理化学结构表征与力学性能

两种不同功能蜘蛛丝的物理化学结构表征与力学性能 Physico-Chemical Structural Characterization and Mechanical Properties of Two Types of Spider Silk with Different Function 刘辉芬 LIU Huifen1 1 first-author 蒋平 JIANG Ping2 2 肖永红 XIAO Yonghong2 2 廖信军 LIAO Xinjun2 2 郭聪 GUO Cong1 1 四川大学生命科学学院/生物资源与生态环境教育部重点实验室 四川大学生命科学学院/生物资源与生态环境教育部重点实验室 College of Life Sciences,Sichuan University /Key Laboratory of Bio-resources and Eco-environment,Ministry of Education College of Life Sciences,Sichuan University /Key Laboratory of Bio-resources and Eco-environment,Ministry of Education 井冈山大学生命科学学院 井冈山大学生命科学学院 College of Life Sciences,Jinggangshan University,Ji’an College of Life Sciences,Jinggangshan University,Ji’an 蜘蛛丝是一种具有优良机械性能的天然动物蛋白纤维,它特有的结构和性能与其生物学功能密切相关.采用氨基酸自动分析仪、傅立叶转换红外光谱仪、单纤强力仪和电子显微镜对棒络新妇（Nephila clavata）卵袋框丝（纺自大壶状腺）与内层丝（纺自柱状腺）两种不同功能蜘蛛丝的物理化学结构表征、力学行为与性能进行测试研究.结果表明这两种蜘蛛丝的氨基酸组成和蛋白二级结构与其力学行为与性能相一致,蜘蛛丝似乎呈现出一定的机械性能,以适应其不同的功能要求,这对人们进行新型安全防护材料的仿生设计将有重要的指导意义. The biological function and life history have shaped the silk’s structures and mechanical properties. Here we examined two types of egg case silk with distinct biological functions: inner cover and scaffolding egg case silks produced respectively by the cylindrical and major ampullate glands of the golden-orb-weaving spider Nephila clavata. The egg case inner cover silks appear to be distinct from the major ampullate gland silks based on micro-morphologies,mole percent amino acid composition and types,secondary structures and tensile behaviors and properties. It seems that spider silks display some strategies of mechanical properties optimally matched to the biological functional requirements of individuals. This might be helpful to guide biomimetic design of novel safe-guarding materials. 蜘蛛 卵袋丝 结构 力学性能 spider egg case silk structures tensile properties 10.14188/j.1671-8836.2010.01.001 Q811 国家自然科学基金资助项目（30760041）;江西省教育厅科技项目（GJJ08422,GJJ08423）;江西省自然科学基金资助项目（2007GQN1690） 2010-01-01 2021-04-01 1 56