Abstract
The thermal behaviour of two copolymers of poly(vinylidene cyanide-co-methyl α acetoxyacrylate) has been studied by means of dynamic and isothermal thermogravimetric analysis in the range 246–316 °C, and gas chromatography-mass spectrometry. The main volatile product is acetic acid, which indicates that the thermal degradation is mainly an elimination reaction. A kinetic model described by a kinetic law of order 1 for the copolymer P(VCN-co-MAA)25 leads to good agreement between experimental and theoretical curves. Kinetic parameters have been calculated. The activation energy is 170.7 kJ mol −1. For the copolymer P(VCN-co-MAA)50, the depolymerization process is more important while the elimination is still present. No kinetic model can be proposed for this case.
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