MALDI-TOF analysis of the secondary processes occurring during the ring opening polymerization of caprolactone initiated by HEMA


Gallardo A., Marcos-Fernandez A., Egri S., Lebron R., Piskin E.

INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION, vol.13, no.2, pp.83-94, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 2
  • Publication Date: 2008
  • Doi Number: 10.1080/10236660701824290
  • Title of Journal : INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION
  • Page Numbers: pp.83-94

Abstract

Short 2-hydroxyethylmethacrylate (HEMA)-oligocaprolactone macromonomers were synthesized at different temperatures from 100 degrees to 190 degrees C by bulk ring opening polymerization using HEMA as initiator and stannous octoate as catalyst. The crude products were analysed by MALDI-TOF and NMR and the influence of the temperature on the reaction was studied. In addition to transesterification (found at temperatures of 130 degrees C and higher), other secondary reactions involving HEMA breakdown were also identified at these temperatures. In these processes, difunctional acrylic compounds may be formed.