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. © 2002 Elsevier Science Ltd. All rights reserved.
Original language | English |
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Pages (from-to) | 1531-1536 |
Number of pages | 6 |
Journal | European Polymer Journal |
Volume | 38 |
Issue number | 8 |
DOIs | |
Publication status | Published - Aug 2002 |
Keywords
- Synthesis (chemical)
- Infrared spectroscopy
- Polymerization
- Cavitation
- Molecular weight
- Ultrasonic effects
- Sonochemistry
- Diffusion
- Mass transfer
- Polyurethanes