Dergiler / Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi / 2017 / Cilt: 7 - Sayı: 4
Kumarin Yan Grup İçeren Poli(3-Benzoil Kumarin-7-il-Metakrilat) Homopolimerinin Termal Bozunma Kinetiği
- Sayfa
- 113–121
- DOI
- —
Özet
Yan grup olarak kumarin halkasını barındıran ve yeni bir metakrilat polimeri olan poli(3-benzoil kumarin-
Abstract
In present study, thermal degradation kinetics of a new methacrylate polymer containingcoumarin side group, poly(3-benzoyl coumarin-7-yl-methacrylate), was investigated in detail. For this purpose,thermogravimetric analysis (TGA) was performed by applying a controlled heating program at different heatingrates to specific amounts of polymer samples. When the TGA results were examined, it was concluded that thethermal stability of polymer was higher with increasing the heating rate. Decomposition activation energies ofpolymer were calculated as 155.01 kJ mol-1 and 165.29 kJ mol-1 according to Flynn-Wall-Ozawa and Kissingermethods, respectively. Coats-Redfern method was also used to investigate the thermal decomposition mechanismof polymer. In the light of obtained kinetic data, it was determined that the thermal decomposition mechanism ofcoumarin derived polymer was followed by D1 one dimensional diffusion type deceleration mechanism at 10 °Cmin-1 optimum heating rate.