胶原纤维的微观编织结构对其力学拉伸性能的影响  

Effect of Micro-weave Structure of Collagen Fibers on Mechanical Behaviors

作　　者：许静[1] 李天铎[1] 王晓芳[1] 张磊[1] 邱书波[1] 

机构地区：[1]齐鲁工业大学,山东济南250353

出　　处：《中国皮革》2014年第7期25-29,共5页China Leather

基　　金：山东省科技攻关项目(2007GG10003048)资助项目

摘　　要：使用自制的高精度微电力学控制仪,测试了不同含湿量胶原纤维的拉伸形变、蠕变以及断裂参数,研究了猪蓝湿革中胶原纤维的力学性能。研究发现:纤维的断裂过程包括了失弹和完全断裂2个过程,这种现象不同于蚕丝纤维等其他胶原纤维的力学行为。扫描电子显微镜和衰减全反射红外光谱测试结果表明,胶原纤维分子间氢键的破坏是导致其失弹的最主要原因。不同含水量纤维力学性能测试结果表明,胶原分子间的侧向氢键是维持纤维弹性的主要因素。通过研究胶原纤维分子间氢键对其力学性能的影响,为控制皮张力学性能提供理论基础,对皮革的生产加工有重要意义。The mechanical behaviors of collagen fibers extracted from wet - blue pig leather were studied experimentally using a designed micro - electromechanical systems platform. The deformation, creep and fracture parameters of the fibers with deferent lev- els of hydration were determinded. It shows that the fibers gradually become soft with increasing levels of hydration. The fracture be- haviors of the fibers include loss of elastic stage and fracture stage, which are different from the mechanical behaviors of other colla- gen fibers, such as spider silk. The structure of the fibers at different stretching stages was analyzed by scanning electron microscopy （SEM） and attenuated total reflection infrared spectrum （ATR FT - IR）. The results demonstrate that the loss of elastic stage for the fiber during stretching can be attributed to the destruction of hydrogen bonds. The work is essential for providing a theoretical ba- sis for microstructure of collagen and its mechanical behavior, leading to a better control of the structure/performance relationship in wet -blue pig leather materials.

关 键 词：纤维 蓝湿革 微电力学控制仪 力学性能 结构 

分 类 号：TS101.92[轻工技术与工程—纺织工程]