AN FTIR-ATR INVESTIGATION OF INVIVO POLY(ETHER URETHANE) DEGRADATION

被引：118

作者：

WU, Y

SELLITTI, C

ANDERSON, JM

HILTNER, A

LODOEN, GA

PAYET, CR

机构：

[1] CASE WESTERN RESERVE UNIV,DEPT MACROMOLEC SCI,CLEVELAND,OH 44106

[2] DUPONT CO,WAYNESBORO,VA 22980

[3] DUPONT CO,WILMINGTON,DE 19880

[4] CASE WESTERN RESERVE UNIV,DEPT PATHOL,CLEVELAND,OH 44106

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1992年 / 46卷 / 02期

关键词：

D O I：

10.1002/app.1992.070460202

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Surface degradation of implanted poly(ether urethane)s was studied quantitatively with a micro-ATR-FTIR technique. Substantial degradation was observed particularly in the soft segment at the alpha-carbon adjacent to the ether linkage. The degradation caused changes in the concentration profiles of the soft-segment groups in the depth direction, and the affected depth was up to 10 microns after implantation for 10 weeks. Inhibition of degradation by antioxidants indicated the oxidative nature of degradation. An in vivo poly (ether urethane) degradation mechanism was proposed.

引用

页码：201 / 211

页数：11

共 28 条

[1] LEAST-SQUARES CURVE-FITTING OF FOURIER-TRANSFORM INFRARED-SPECTRA WITH APPLICATIONS TO POLYMER SYSTEMS [J].