The effect of high-intensity ultrasound on the ring-opening polymerisation of cyclic lactones

G J Price, E J Lenz, C W G Ansell

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)
191 Downloads (Pure)

Abstract

High-intensity ultrasound has been applied to the ring-opening polymerisation of delta-valerolactone and epsilon-caprolactone catalysed by dibutyl tin dilaurate. Sonication was found to accelerate the polymerisation. In the case of delta-valerolactone, sonication also promoted a depolymerisation reaction so that the molecular weight fell during later stages of the reaction. Co-polymers of the two monomers were synthesised and the use of ultrasound led to preferential incorporation of epsilon-caprolactone into the material, probably due to degradation of the valerolactone sequences. (C) 2002 Elsevier Science Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)1753-1760
Number of pages8
JournalEuropean Polymer Journal
Volume38
Issue number9
DOIs
Publication statusPublished - 2002

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