Thermal degradation of poly(isobornyl acrylate) and its copolymer with poly(methyl methacrylate) via pyrolysis mass spectrometry

Ozlem S., Aslan-Guerel E., Rossi R. M., HACALOĞLU J.

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, vol.100, pp.17-25, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 100
  • Publication Date: 2013
  • Doi Number: 10.1016/j.jaap.2012.10.024
  • Journal Name: JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.17-25
  • Keywords: Poly(methyl methacrylate), Poly(isobornyl acrylate), Copolymer, Thermal degradation, Direct pyrolysis mass spectrometry, METHYL-METHACRYLATE, RADICAL POLYMERIZATION, ISOBORNYL ACRYLATE, BLOCK-COPOLYMERS, POLYMERS, RAFT, ATRP
  • Middle East Technical University Affiliated: Yes

Abstract

In this work, the thermal degradation characteristics of poly(isobornyl acrylate) (PIBA), and its copolymer with PMMA, P(MMA-co-IBA) were investigated via direct pyrolysis mass spectrometry. Thermal degradation behavior of poly(isobornyl methacrylate) (PIBMA) was also studied for a better understanding of thermal degradation mechanism of PIBA. For both PIBA and PIBMA, gamma-H transfer from the isobornyl ring to the carbonyl group was predominantly effective in thermal degradation. As a consequence of evolution of isoborylene, poly(acrylic acid) was produced. Trans-esterification reactions due to intermolecular interactions lead to evolution of H2O. Upon loses of CO2 and CO crosslinked units with higher thermal stabilities were generated. In case of P(MMA-co-IBA), intermolecular interactions between PIBA and PMMA chains were detected. Based on evolution of methanol, a trans-esterification reaction between the MMA and acrylic acid units generated by loss of isobornylene from PIBA chains was proposed. (C) 2013 Published by Elsevier B.V.