kinetic analysis on thermal degradation of poly(phenylene sulfide ether)

Thermal degradation of poly(phenylene sulfide ether) (PPSE) was investigated by using thermogravimetry (TG) under air and nitrogen atmosphere. It was found that the existence of oxygen depressed the thermal stability of PPSE and changed the mechanism of thermal degradation. The influences of molecul...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2009-10, Vol.114 (2), p.911-918
Main Authors: Gu, Aiqun, Yu, Zili, Li, Yubao
Format: Article
Language:English
Subjects:
Applied sciences
Atmospheres
Chemical reactions and properties
Degradation
Ethers
Exact sciences and technology
kinetics (polymer)
Mathematical models
Molecular weight
Organic polymers
Physicochemistry of polymers
poly(phenylene sulfide ether)
Reaction kinetics
reaction mechanism
Sulfides
Thermal degradation
thermal properties
Thermal stability
thermogravimetric analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Thermal degradation of poly(phenylene sulfide ether) (PPSE) was investigated by using thermogravimetry (TG) under air and nitrogen atmosphere. It was found that the existence of oxygen depressed the thermal stability of PPSE and changed the mechanism of thermal degradation. The influences of molecular weight and heating rate on the decomposition of PPSE were also investigated under Nâ‚‚ atmosphere. The results showed that the thermal stability of PPSE was excellent and can be further enhanced by increasing molecular weight. A simple kinetic model concerning two parallel reactions in overall temperature range was proposed to describe the thermal degradation process of PPSE in nitrogen. Kinetic analysis of the dynamic TG curves for PPSE was carried out by using Kissinger, Flynn-Wall-Ozawa, and Coats-Redfern methods. The kinetics of PPSE degradation displayed that the two parallel reactions were in accordance with the first-order equation. The kinetic model was further validated by comparing the experimental and calculated results.
ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.30579