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Study on kinetics of thermal degradation of Polymethyl Methacrylate/Cyclic Olefin Copolymer blend
  • Maryam Khosravinezhad,
  • M. Kazemi
Maryam Khosravinezhad
Islamic Azad University

Corresponding Author:[email protected]

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M. Kazemi
Islamic Azad University
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Abstract

Poly methyl methacrylate (PMMA) was mixed with cyclic olefin copolymer (COC) because of hardness, strength and transparency properties. The results of thermal analysis through TGA and DTG showed that, the thermal properties of the alloy are improved using 40% cyclic olefin copolymer. Kinetics of thermal degradation (pyrolysis) of polymers has been studied and analyzed. The computation of kinetic analysis is measured along the different methods used to study the kinetics. The activation energy (E) of degradation of studied materials was estimated using Ozawa Flynn and Wall (OFW),Starink and Kissinger’s methods, and evaluation of three kinetic parameters taken appropriate kinetic model in terms of percent change for both types of polymers have been proposed, and finally, simulated curves were compared with the experimental curves. Both mechanisms of the degradation for the COC and PMMA under nitrogen atmosphere would reflect intramolecular transfer and random scission of the main chain.