Kinetics of thermal degradation of thermotropic poly(p-oxybenzoate-co-ethylene-2,6-naphthalate) by single heating rate methods

The kinetics of thermal degradation of thermotropic liquid crystalline poly(p‐oxybenzoate‐co‐ethylene‐2,6‐naphthalate) (PHB/PEN) with the monomer ratio of 60 : 40 and PEN in nitrogen was studied by dynamic thermogravimetry (TG). The kinetic parameters, including the activation energy Ea, the reactio...

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Bibliographic Details
Published in:Journal of applied polymer science 2004-03, Vol.91 (6), p.3915-3920
Main Authors: Zhang, Li, Ma, Jinghong, Zhu, Xinyuan, Liang, Borun
Format: Article
Language:English
Subjects:
6-naphthalate
Applied sciences
Chemical reactions and properties
Degradation
Exact sciences and technology
kinetics
liquid crystalline polyester
Organic polymers
Physicochemistry of polymers
poly(p-oxybenzoate-co-ethylene 2
poly(p‐oxybenzoate‐co‐ethylene 2,6‐naphthalate)
thermal degradation
thermogravimetry
thermostability
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Summary:The kinetics of thermal degradation of thermotropic liquid crystalline poly(p‐oxybenzoate‐co‐ethylene‐2,6‐naphthalate) (PHB/PEN) with the monomer ratio of 60 : 40 and PEN in nitrogen was studied by dynamic thermogravimetry (TG). The kinetic parameters, including the activation energy Ea, the reaction order n, and the frequency factor ln(Z) of the degradation reaction for PHB/PEN (60 : 40) and PEN were analyzed by the single heating rate methods of Friedman and Chang. The effects of the heating rate and the calculating method on the thermostable and degradation kinetic parameters are systematically discussed. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 91:3915–3920, 2004
ISSN:0021-8995
1097-4628
DOI:10.1002/app.13600