Study of thermal degradation products of poly [2-(3-mesityl-3-methylcyclobutyl)-2-ketoethylmetracrylate]
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Tarih
2007
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Freund Publishing House Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The thermal degradation of poly [2-(3-mesityl-3-methylcyclobutyl)-2-ketoethylmethacrylate] (PMKEMA) has been studied using a system consisting of a degradation tube, with a condenser for product collection, a gas-phase Infrared (IR) cell and a rotary pump. The investigation of the nature of the evolved products has been supplemented by studies of structural changes in the degrading polymer by Fourier Transform Infrared (FT-IR) technique. Changes have been investigated under programmed heating at 10 degrees C/min from room temperature to 500 degrees C. The product identification investigations were done by using FT-IR, H-1 and C-13-Nuclear Magnetic Resonance (H-1-C-13-NMR) and Gas Chromatography-Mass Spectrometer (GC-MS) techniques. The depolymerization of the main reaction is essential in thermal degradation of the PMKEMA. The degradation produces anhydride ring structures in the chain at temperatures up to about 300 degrees C. The cleaving of ketone, aldehyde, and mesitylene compounds from side chains of the polymers is a common reaction for the polymers. A mechanism of degradation showing the formation of some of these products is discussed.
Açıklama
Anahtar Kelimeler
poly [2-(3-mesityl-3-methylcyclobutyl)-2-ketoethylmethacrylate], GC-MS, thermal degradation
Kaynak
Journal of Polymer Engineering
WoS Q Değeri
Q4
Scopus Q Değeri
Cilt
27
Sayı
3
