Thermal degradation during melt processing of poly(ethylene oxide), poly(vinylidenefluoride-co-hexafluoropropylene) and their blends in the presence of additives, for conducting applications

被引：35

作者：

Malik, P ^{[1
]}

Castro, M ^{[1
]}

Carrot, C ^{[1
]}

机构：

[1] Univ St Etienne, CNRS, UMR 5156, Lab Rheol Mat Plast, F-42023 St Etienne 2, France

来源：

POLYMER DEGRADATION AND STABILITY | 2006年 / 91卷 / 04期

关键词：

poly(ethylene oxide); poly(vinylidenefluoride) copolymer; blends; thermal degradation; conductive applications;

D O I：

10.1016/j.polymdegradstab.2005.01.020

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this paper, the thermal degradation during compounding of poly(ethylenc oxide) and poly(vinylidenefluoride-co-hexafluoropropylene) and their immiscible blends was investigated. Infrared spectroscopy, size exclusion chromatography, dynamic theology, thermogravimetric analysis, and coupled gas chromatography-mass spectroscopy were used. Most of the identified degradation products or substances are glycols, formates, lactones, ethers or even acids for long processing times. The mechanisms for the production of these chemical compounds were already reported in previous publications. Additionally, the influence of carbon black and LiV3O8 additives, currently used for enhancing the conductive properties, was studied. Addition of carbon black causes an increase in the PEO stability, whereas addition of LiV3O8 has an opposite and dramatic effect. PVDF-HFP is found to be less susceptible to degradation because of the inherent stability of fluorine-containing polymers. However, melt processing provides additional contributions to degradation because of the high viscosities. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：634 / 640

页数：7

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