N.m.r. and FTi.r. studies on transreactions and hydroxyl exchanges of bisphenol-A polycarbonate with an epoxy upon heating

C. C. Su, E. M. Woo, C. Y. Chen, Ru Rong Wu

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Our previous studies have proposed occurrence of transreactions and subsequent alcoholysis reactions upon heating between the carbonate group in bisphenol-A polycarbonate (PC) and the epoxide group in tetraglycidyl-4,4′-diaminodiphenylmethane (TGDDM) with the TGDDM monomer itself as a tertiary amine auto-catalyst. In this study, solution proton/carbon-13 n.m.r. as well as solid-state carbon-13 n.m.r. examination was performed in order to get a more detailed modelling of the chemical structure of transreacted tetraglycidyl-4.4′-diaminodiphenyl methane epoxy/bisphenol-A polycarbonate (TGDDM/PC) blends. In addition, Fourier transform infra-red (FTi.r.) spectroscopy was used to monitor changes of functional groups due to heat treatment, and differential scanning calorimetry (d.s.c.) was used to determine the TgS of the heated blends. In summary, the mechanism of reaction models in TGDDM/PC blends upon heating has been proved in greater detail,

Original languageEnglish
Pages (from-to)2047-2056
Number of pages10
Journalpolymer
Volume38
Issue number9
DOIs
Publication statusPublished - 1997 Apr

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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