K. Demirelli, M. Coskun, Esin Kaya
2002
Citations
1
Influential Citations
18
Citations
Journal
Polymer Degradation and Stability
Abstract
Abstract 2-Hydroxypropyl methacrylate (HPMA) was polymerized in the presence of AIBN at 60 °C. The thermal degradation behaviour of poly(HPMA) has been studied using thermogravimetry (TG), the IR examination of the partially degraded polymer, and a single line vacuum system consisting of a degradation tube, with a condenser for product collection and a gas phase IR cell. The cold ring fraction (CRF) was collected at two different temperatures, one of them (CRF 1 ) is from ambient temperature to 340 °C and the other (CRF 2 ) in the range 340–450 °C. The volatile products of the degradation were trapped at −196 °C (in liquid nitrogen). All fractions of the degradation were investigated by means of IR, 1 H- and 13 C-NMR techniques and the CRFs were also characterized by GC–MS. As major products of the degradation, the monomer, 2-propanal, methacrylic acid, 1,2-propandiol, 2-(2-propenyloxy)propyl methacrylate, 2-hydroxpropanal, and hydroxymethyl isopropyl ether were detected. Degradation mechanism and the origins of the identified products are discussed.