Polymer Bulletin

, Volume 51, Issue 2, pp 111–118

Chemical Modification of Bisphenol A Polycarbonate by Reactive Blending with Cyclic Anhydrides

Part 1: Reaction with Succinic Anhydride
  • Corrado Berti
  • Martino Colonna
  • Maurizio Fiorini
  • Cesare Lorenzetti
  • Laura Sisti
Original article

DOI: 10.1007/s00289-003-0202-8

Cite this article as:
Berti, C., Colonna, M., Fiorini, M. et al. Polymer Bulletin (2003) 51: 111. doi:10.1007/s00289-003-0202-8

Summary

Reactive blending with cyclic anhydrides in the melt is a promising process to modify the chemical structure of bisphenol A polycarbonate (PC) by insertion of ester moieties leading to consistent changes in the chemical and physical properties of PC. In particular, by the reaction with succinic anhydride it is possible to insert aliphatic moieties in the polymer backbone, decreasing the melt viscosity and the glass transition temperature of PC (and thus increase its processability). The reaction, that is catalysed by Lewis acids (e. g. titanium butoxide), proceeds through the formation of carbonyl carbonate groups that undergo decarboxylation leading to ester moieties. No side reactions have been detected by NMR analysis. The addition of phosphorous acid as catalyst quencher at the end of the process gives rise to polymers with good colour and thermal stability.

Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Corrado Berti
    • 1
  • Martino Colonna
    • 1
  • Maurizio Fiorini
    • 1
  • Cesare Lorenzetti
    • 1
  • Laura Sisti
    • 1
  1. 1.Dipartimento di Chimica Applicata e Scienza dei MaterialiUniversità di BolognaBolognaItaly