纬编织物增强小口径丝素聚氨酯人造血管的力学性能研究  

Mechanical Properties of Small-diameter Superfine Silk Powder/polyurethane Vascular Graft Reinforced by Tubular Knitted Fabric

作　　者：祝国成[1] 杨红军[2] 欧阳晨曦[3] 徐卫林[1] 张震[1] 鄢芸[1] 

机构地区：[1]纺织新材料绿色加工及其功能化教育部重点实验室 武汉科技学院,湖北武汉430073 [2]纺织学院 东华大学,上海201620 [3]华中科技大学同济医学院附属协和医院血管外科,湖北武汉430022

出　　处：《透析与人工器官》2011年第2期5-9,共5页Chinese Journal of Dialysis and Artificial Organs

基　　金：国家自然科学基金(授权号:50873079);国家973重大基础研究项目(授权号:2009CB526402)

摘　　要：通过在涤纶/氨纶管状织物上复合丝素/聚氨酯的方法制作一种复合结构的小口径人造血管,这种复合结构的人造血管截面显现多微孔结构,并且微孔分布均匀,内表面也较光滑。力学测试的结果表明,随着管壁厚度的增加,人造血管的断裂强力、断裂功和初始模量都上升;随着氨纶含量的增加,人造血管的断裂功和初始模量下降,但断裂伸长和断裂强力先增大后减小;随着丝素粉体含量的增加,所有测试的力学性能指标均有所下降。In this paper, a kind of composite microtube which made from superfine silk powder and polyurethane, reinforced by polyster and spandex tubular fabrics were examined. The cross-section of composite microtubes was mieroporous, and mieropores were uniform distribution, the inner surface was relative smooth. The results showed that the wall thickness of composite microtube increased led to the strength, the breaking work and the initial modulus increased; the spandex content increased brought about the initial modulus and the breaking work decreased, but the breaking extension and the breaking load were first increased and then decreased; and all the mechanical properties decreased as the SFSP content increased.

关 键 词：超细丝素粉体 聚氨酯 管状织物 人造血管 力学性能 

分 类 号：R318.08[医药卫生—生物医学工程]