Synthesis, Characterization and Thermal Decomposition Kinetics of a Novel Benzofuran Ketoxime Derived Polymer

Abstract

A novel benzofuran ketoxime derived polymer, poly(benzofuran-2-yl-methylketoxime-O-methacrylate) [poly(BMK-MA], was firstly synthesized by free radical polymerization method. Its thermal degradation studies were performed by thermogravimetric analysis (TGA) in order to determine the actual reaction mechanisms of the decomposition process. The activation energy of the solid-state process was determined by using Flynn-Wall-Ozawa method, which resulted to be 235.9 kJ/mol. The activation energies of different mechanism models were determined by Coats-Redfern, Madhusudanan and Van Krevelen kinetic methods. Compared with the Ozawa method, the actual reaction mechanism obeyed deceleration type, phase boundary controlled reaction (R 1 ).

Synthesis and characterization of a novel isocoumarin derived polymer and its thermal decomposition kinetics

“…Alternatively, a large number of polymers with different reactive functional groups have successfully been synthesized and tested to date [11][12][13][14][15][16]. These polymers are used not only for their macromolecular properties, but also for their specific applications due to their functional properties [12,17].…”

“…It can be seen that the initial decomposition temperatures (accepted as 5 % weight loss) of poly(ICEMA) at heating rates of 5, 10, 15 and 20 °C/min are measured as 256.59, 269.61, 285.36 and 286.10 °C, respectively. As the heating rate increases, the decomposition temperatures show a change in the positive direction[13,16,20].…”