SURFACE SELECTIVE MODIFICATION OF FLUOROPOLYMER BIOMATERIAL

被引：6

作者：

GRAZIANI, EI ^{[1
]}

MCKEOWN, NB ^{[1
]}

KALMAN, PG ^{[1
]}

THOMPSON, M ^{[1
]}

机构：

[1] TORONTO GEN HOSP, MAX BELL RES CTR, 200 ELIZABETH ST, TORONTO M4C 1G6, ONTARIO, CANADA

来源：

INTERNATIONAL BIODETERIORATION & BIODEGRADATION | 1992年 / 30卷 / 2-3期

基金：

英国医学研究理事会;

关键词：

D O I：

10.1016/0964-8305(92)90065-V

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

A brief review of techniques employed for the chemical modification of the surface of various fluoropolymers is presented. Such modification of poly(tetrafluoroethylene) (PTFE) in its expanded form (ePTFE) is an important consideration with respect to the use of this material in the fabrication of vascular grafts. The present paper describes the chemical treatment of planar and expanded PTFE, and poly(tetrafluoroethylene-co-hexa fluoropropylene) (FEP) with previously reported benzoin and sodium naphthalide reagents. Angular dependent-X-ray photoelectron spectroscopy, scanning electron microscopy and water contact angle measurements show that a degree of surface selectivity is obtained in the reduction of FEP with benzoin. In contrast, both treatments cause very corrosive action of PTFE. The reduction of ePTFE by sodium naphthalide, even under relatively mild conditions, causes the material to lose much of its structural integrity. Accordingly, the use of these reagents to generate new chemical functionalities on ePTFE is not recommended.

引用

页码：217 / 231

页数：15

共 30 条

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