The effect of high intensity ultrasound on the synthesis of some polyurethanes |
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| Authors: | Gareth J Price Emma J LenzChristopher WG Ansell |
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| Institution: | a Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK
b Smith and Nephew Group Research Centre, York Science Park, Heslington, York YO10 5DF, UK |
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| Abstract: | High intensity ultrasound has been applied to the preparation of polyurethanes from a number of diisocyanates and diols. In all cases, the sonochemical reactions proceeded faster in the early stages and led to higher molecular weight polymers. The effect of changing the ultrasound intensity is discussed and some speculation as to the mechanism of the reaction enhancement is given. |
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| Keywords: | Sonochemistry Cavitation Polymerisation rates Polyurethanes Ultrasound |
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