Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (02): 74-79.doi: 10.13475/j.fzxb.20201008207

• Textile Engineering • Previous Articles     Next Articles

Preparation and performance of polyester/silk woven heart valve

HUANG Di1,2, LI Fang1,2, LI Gang1,2()   

  1. 1. College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215123, China
    2. National Engineering Laboratory for Modern Silk, Suzhou, Jiangsu 215123, China
  • Received:2020-10-29 Revised:2020-11-25 Online:2021-02-15 Published:2021-02-23
  • Contact: LI Gang E-mail:tcligang@suda.edu.cn

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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 strength 7.5~20 MPa, and water permeability lower than 300 mL/(cm 2·min). Such properties of AHVF meet the standards for heart valve materials, indicating the feasibility of the AHVF for heart valve application.

Key words: polyester, silk, woven heart valve fabric, mechanical property, liquid permeability

CLC Number: 

  • TS106

Fig.1

Flow chart of preparation for PET/SF woven heart valve. (a) Washing and sizing; (b) Weaving;(c) Washing and desizing"

Tab.1

Orthogonal experiment factors and levels"

水平 织物组织
A		 原料(经/纬)
B		 密度/(根·(10 cm)-1)
C
经向 纬向
1 平纹 涤纶/涤纶 500 200
2 二上二下斜纹 涤纶/蚕丝 500 300
3 三上一下斜纹 蚕丝/蚕丝 500 400

Tab.2

Parameters of samples"

编号 织物组织 经纱 纬纱 纬纱
线密度		 密度/
(根·(10 cm)-1)
经向 纬向
1# 平纹 涤纶 涤纶 3.33 tex 500 200
2# 二上二下斜纹 涤纶 蚕丝 3.33 tex 500 200
3# 三上一下斜纹 蚕丝 蚕丝 8.33(36 f) tex 500 200
4# 平纹 涤纶 蚕丝 3.33 tex 500 300
5# 二上二下斜纹 蚕丝 蚕丝 8.33(36 f) tex 500 300
6# 三上一下斜纹 涤纶 涤纶 3.33 tex 500 300
7# 平纹 蚕丝 蚕丝 8.33(36 f) tex 500 400
8# 二上二下斜纹 涤纶 涤纶 3.33 tex 500 400
9# 三上一下斜纹 涤纶 蚕丝 3.33 tex 500 400

Fig.2

SEM photographs of yarns(×1 000)"

Fig.3

FT-IR (a) and XRD (b) curves of yarns"

Fig.4

SEM images of samples(×50)"

Fig.5

Thickness of samples"

Tab.3

Range analysis of samples"

极差 A B C
RT/mm 0.05 0.14 0.07
RB/MPa 6.37 9.44 6.73
RE/MPa 12.43 17.71 14.03
RC/(°) 145.67 831.67 5.38
RW/(mL·(cm2·min)-1) 3.61 33.20 579.00

Fig.6

Breaking strength (a) and elastic modulus (b) of samples"

Fig.7

Contact angle of samples"

Fig.8

Water permeability of samples"

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