DEGRADATION BEHAVIOR OF POLYURETHANE STUDIED BY LINEAR TEMPERATURE PROGRAMMED PYROLYSIS FTIR SPECTROSCOPY

被引：17

作者：

HERZOG, K

机构：

[1] Department of Chemistry, University of Technology Dresden, Dresden

来源：

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1991年 / 52卷

关键词：

D O I：

10.1002/masy.19910520132

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

FTIR spectrometers with two measurement beams offer the possibility to record and process spectra from 4000 to 400 cm-1 taken every 30 seconds in situ from a polyurethane film which is subjected to a programmed linear rise of temperature from ambient to 400-degrees-C and to take quasi simultaneously the spectra of the gaseous pyrolysis products. As an example, polyurethane (PUR) prepared from diphenylmethane diisocyanate (MDI) with polypesteralcohol from adipic acid was thermally degraded to isocyanate and polyester alcohol. Carbondiimide was found in the pyrolysis products and carbon dioxide was detected in the pyrolysis gas. The isocyanate evaporation and the thermal degradation of polyester alcohol were studied.

引用

页码：307 / 312

页数：6