Kinetics of Thermodegradation of Palm Kernel Oil Derived Medium-Chain-Length Polyhydroxyalkanoates

Sin, M.C. and Tan, I.K.P. and Annuar, M.S.M. and Gan, S.N. (2012) Kinetics of Thermodegradation of Palm Kernel Oil Derived Medium-Chain-Length Polyhydroxyalkanoates. Journal of Applied Polymer Science. ISSN 0021-8995

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Abstract

Oligomeric hydroxyalkanoic acids have potential industrial, medical, and pharmaceutical applications and they can be produced from the degradation of high molecular weight polyhydroxyalkanoates by a number of different ways. Thermal decomposition takes place in the absence of organic solvent and other chemicals and this justified the method of producing low molecular weight PHA as green chemistry. The kinetics for thermal degradation of medium-chain-length polyhydroxyalkanoates (mcl-PHA) prepared from saponified palm kernel oil (SPKO) was studied by thermogravimetric analysis (TGA) technique. Employing the nonisothermal Kissinger's method, the degradation activation energy, E d, and pre-exponential factor, A, were 129 kJ mol -1 and 1.15 � 10 10 s -1, respectively. Specific degradation rate constant, k was found to increase at higher heating rate. © 2012 Wiley Periodicals, Inc.

Item Type: Article
Uncontrolled Keywords: Activation energy Biopolymers Degradation Kinetics Renewable polymers Thermogravimetric analysis
Subjects: Q Science > Q Science (General)
Q Science > QR Microbiology
Divisions: Faculty of Science > Institute of Biological Sciences
Depositing User: miss munirah saadom
Date Deposited: 14 Jan 2013 06:31
Last Modified: 18 Mar 2019 02:05
URI: http://eprints.um.edu.my/id/eprint/5405

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