Abstract
In the present study the thermal behavior of some polyphosphonates and polyphosphates was studied. The polymers were synthesized by the inverse phase-transfer catalysis method. The thermal behavior was tested on a Perkin-Elmer DIAMOND device, in a dynamic air atmosphere and with heating rates of 5, 7, 10 and 12 °C min-1. By inspecting the thermogravimetric curves, a remarkable thermal stability up to 200 °C was observed. Between 240 and 380 °C, an endothermic decomposition occurred, with the tendency to a maximum at the end of the process. The end of the thermo-degradation was connected with an oxidative process. A kinetic analysis of the thermogravimetric/differential thermogravimetric results by means of the Friedman, Flynn—Wall—Ozawa, and non-parametric kinetic methods is the basis of discussions on the influence of the molecular architecture on the thermal behavior.
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