M. Coskun, M. Temüz, M. Koca
2003
Citations
0
Influential Citations
3
Citations
Journal
Polymer Degradation and Stability
Abstract
Abstract (2-Hydroxy-3-phenoxy)propyl methacrylate (PPMA) and (2-hydroxy-3-tetrahydrofurfuryloxy)propyl methacrylate (THPMA) were polymerised using benzoyl peroxide as initiator in 1,4-dioxane at 60 °C. The polymers were characterized by gel permeation chromatography (GPC), differential scanning calorimetry (DSC), IR, 1 H and 13 C NMR techniques. The thermal degradations of poly(THPMA) and poly(PPMA) were investigated by thermogravimetric analysis (TGA) and programmed heating of the polymers from ambient to 500 °C under vacuum, followed by product collection, and using IR spectra of partially degraded polymer. IR, GC–MS, 1 H and 13 C NMR techniques were used in product identification studies. Although the heating of poly(THPMA) to 330 °C gives the monomer in ratio 87.0%, it gives the monomer in ratio 47.7% between 330 and 500 °C, whereas poly(PPMA) gives the monomer in ratio 85.9% during heating from ambient to 500 °C. Activation energies of the degradations given the corresponding monomers in ratio 85% at least, and the mechanism of degradation given some other major products, are discussed.