纤维原料对机织人工血管织物结构和力学性能的影响  

Effect of fiber materials on structure and mechanical properties of woven vascular graft fabrics

作　　者：刘雪莹 邹婷[2,3] 王璐[1,2] Liu Xueying;Zou Ting;Wang Lu(College of Textiles,Donghua University,Shanghai 201620,China;Key Laboratory of Textile Science&Technology,Ministry of Education,Donghua University,Shanghai 201620,China;College of Biological Science and Medical Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学纺织学院,上海201620 [2]东华大学纺织面料技术教育部重点实验室,上海201620 [3]东华大学生物与医学工程学院,上海201620

出　　处：《产业用纺织品》2024年第10期1-11,共11页Technical Textiles

基　　金：中国纺织工业联合会应用基础研究项目:屈曲形态下一体编织型部分可吸收血管覆膜支架(J202104)。

摘　　要：为探究纤维原料对机织人工血管织物结构和力学性能的影响规律,分别以假捻拉伸变形丝(DTY)、全拉伸丝(FDY)、预取向丝-全拉伸丝复合丝(POY-FDY)和高强全拉伸丝(HT-FDY)等4种类别的涤纶复丝为纬纱,设计制备不同纤维原料的人工血管织物试样。分析不同特性的纬纱原料对机织人工血管织物管壁结构、水渗透性和力学性能的影响。研究结果表明:不同热收缩特性的原料配制可实现不同尺寸与形态的机织人工血管织物设计;织物周向拉伸性能与纬纱断裂强度存在较大的相关性;以POY-FDY为纬纱的织物顺应性好,形变响应能力强;所制备的6种机织人工血管织物的水渗透量均满足无需预凝的标准,但以HT-FDY为纬纱的织物的水渗透量不及商用人工血管;以DTY和FDY为纬纱的织物水渗透性较好,既能有效防止植入后的管壁血液渗漏,又能保持合理的孔隙和渗透能力,促进血管壁内外的物质交换;以FDY为纬纱的机织人工血管织物在植入初期具有更好的尺寸稳定性,血液渗漏量更低。In order to explore the effect laws of fiber materials on structure and mechanical properties of woven vascular graft fabrics,four types of polyester multifilaments,including drawn-texturing yarn(DTY),fully drawn yarn(FDY),preoriented yarn-fully drawn yarn(POY-FDY)and high-tech fully drawn yarn(HT-FDY),were used as weft yarn to design and prepare vascular graft fabrics with different fiber materials.The effects of weft materials with different characteristics on the vascular graft fabric structure,water permeability and mechanical properties were analyzed.The results show that the use of materials with different heat shrinkage characteristics can help to realize the design of woven vascular graft fabrics with different sizes and shapes.There is a great correlation between the circumferential tensile properties of fabrics and the breaking strength of weft yarns.Fabric with POY-FDY as weft yarn has better compliance and deformation response.The water permeability of 6 kinds of woven vascular graft fabrics can meet the standard of no pre-clot,but the permeability of fabric with HT-FDY as weft yarn is not as good as that of commercial vascular graft.The water permeability of fabrics with DTY or FDY as weft yarn is pretty good,which can not only prevent blood leakage after implantation,but also maintain a certain porosity and permeability,and promote the exchange of substances inside and outside the vessel wall.Woven vascular graft fabrics with FDY as weft yarn have greater dimensional stability and lower blood leakage at the initial stage of implantation.

关 键 词：机织人工血管 涤纶 力学性能 水渗透性 结构 

分 类 号：TB303[一般工业技术—材料科学与工程]