Interrelations between mechanism, kinetics, and rheology in an isothermal cross-linking chain-growth copolymerisation

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

The free radical chain-growth cross-linking copolymerisation of an unsaturated polyester resin with styrene is investigated in isothermal conditions using different techniques. By modulated temperature differential scanning calorimetry (MTDSC) the rate of polymerisation is observed simultaneously with the (partial) vitrification of the reacting material. An important autoacceleration closely before vitrification corresponds to an accelerating styrene consumption. The autoacceleration occurs long after the gelation of the material, which implies that termination reactions involving small radicals are still important at an advanced conversion. The deceleration of these termination reactions causes the autoacceleration, which is stopped when the propagation reaction slows down due to vitrification. MTDSC proves to be very suitable for studying the interrelations between vitrification and the polymerisation kinetics.
Original languageEnglish
Pages (from-to)2959-2968
Number of pages10
JournalPolymer
Volume42
Issue number7
DOIs
Publication statusPublished - 2001

Bibliographical note

Polymer 42 (2001) 2959-2968.

Keywords

  • modulated temperature DSC (MTDSC)
  • raman spectrometry
  • thermosets
  • reaction kinetics

Fingerprint

Dive into the research topics of 'Interrelations between mechanism, kinetics, and rheology in an isothermal cross-linking chain-growth copolymerisation'. Together they form a unique fingerprint.

Cite this