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Thermal Stability of Polyetherketones

The thermal stability of polyether ketone, polyetheretherketone, polyarylene ketone at 400-500 °C was studied by gas chromatography. It was found out that the thermal destruction of polyetherketones and polyetheretherketones begins with the rupture of the ketone group, and polyarylene ketones with the detachment of the methyl group and the rupture of the ether linkage of the diane fragment.