The effect of high-intensity ultrasound on the ring-opening polymerisation of cyclic lactones |
| |
| Authors: | Gareth J. Price Emma J. LenzChristopher W.G. Ansell |
| |
| Affiliation: | a Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK
b Smith & Nephew Group Research Centre, York Science Park, Heslington, York YO10 5DF, UK |
| |
| Abstract: | High-intensity ultrasound has been applied to the ring-opening polymerisation of δ-valerolactone and ε-caprolactone catalysed by dibutyl tin dilaurate. Sonication was found to accelerate the polymerisation. In the case of δ-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 ε-caprolactone into the material, probably due to degradation of the valerolactone sequences. |
| |
| Keywords: | Polylactones Sonochemistry Cavitation Polymerisation rates Ultrasound |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
