Thermal degradation studies of novel diethylene glycol based unsaturated polyesters in air

被引：8

作者：

Agrawal, JP ^{[1
]}

Sarwade, DB ^{[1
]}

Makashir, PS ^{[1
]}

Mahajan, RR ^{[1
]}

Dendage, PS ^{[1
]}

机构：

[1] High Energy Mat Res Lab, Pune, Maharashtra, India

来源：

POLYMER DEGRADATION AND STABILITY | 1998年 / 62卷 / 01期

关键词：

D O I：

10.1016/S0141-3910(97)00213-9

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Thermal degradation of some unsaturated polyesters synthesized by '1-step', '2-step' and '3-step' polyesterification processes, and designated as NUP-I, NUP-II and NUP-III, respectively, have been studied using thermogravimetry (TG), derivative thermogravimetry (DTG), differential thermal analysis (DTA), isothermal TG, infrared (IR) spectroscopy and hot stage microscopy. The data from dynamic studies in static air and dynamic nitrogen suggest that the mode of degradation is different in air and nitrogen. The degradation in static air involves two stages as against single stage degradation in nitrogen. Isothermal studies in air reveal that the degradation follows a two-step first-order reaction. IR studies show that the degradation starts with the breaking of ester linkages and CO2 is the initial gaseous product detected at 300 degrees C. (C) 1998 Elsevier Science Limited. All rights reserved.

引用

页码：9 / 14

页数：6

共 14 条

[1] A COMPARATIVE ACCOUNT OF PROPERTIES OF NOVEL UNSATURATED POLYESTERS SYNTHESIZED BY DIFFERENT POLYESTERIFICATION PROCESSES [J].