| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1269095 | Ultrasonics Sonochemistry | 2013 | 6 Pages |
The kinetics of phase-transfer catalyzed radical polymerization of N-vinyl imidazole (NVI) using potassium peroxy disulfate (PDS) as water soluble initiator and tetraoctylammonium chloride (TOAC) as PTC has been investigated in ethyl acetate/water two phase system assisted by ultrasound irradiation at constant temperature 60 + 1 °C under nitrogen atmosphere. and. The rate of polymerization increases with an increase in concentrations of NVI, PTC and PDS. The order with respect to [NVI], [PTC], and [PDS] were found to be 1.01, 1.03 and 0.52 respectively. Based on the observed results a suitable mechanism has been proposed to account for the experimental observations followed by a discussion on its significance.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A phase-transfer catalyst was used for the polymerization of N-vinyl imidazole. ► Combined effect of ultrasound with various kinetic parameters were studied. ► The effect of different ultrasound frequency was compared for the rate of polymerization of the reaction. ► The rate of polymerization enhanced almost 3-fold and 8-fold with frequency range of 28 kHz, 40 kHz with the same output power of 300 W. ► The rate of polymerization enhanced with ultrasound.
