涤纶 蚕丝机织心脏瓣膜的制备及其性能.pdf

涤纶_蚕丝机织心脏瓣膜的制备及其性能第 卷 第 期 纺 织 学 报
42 　 2 　 　 　 ge of Textile and Clothing Engineering Soochow University Suzhou Jiangsu China
(1 , , , 　 215123, ;
. National Engineering Laboratory for Modern Silk Suzhou Jiangsu China
2 , , 　 215123, )
Abstract
　 In order to develop an artificial heart valve with required mechanical properties and blood-
proof performance, polyester ( PET) multifilament and degummed silk fibroin ( SF) were used for
preparing woven artificial heart valve fabric (AHVF) through optimized design experiments on a sample
weaving machine, with different structures, yarn linear densities and fabric densities. The optimization
results show that when the thickness of AHVF is as thin as (0. 52±0. 1) mm, the AHVF demonstrates
good hydro-philicity with contact angel of (60°±1. 2°) which is closed to human heart valve. It is shown
that AHVF has anisotropic mechanical properties and low permeability, with warp elastic modulus being
60 ~ 100 MPa, warp breaking strength 20 ~ 40 MPa, weft elastic modulus 7 ~ 50 MPa, weft breaking
2
strength 7.