Abstract
The inhibition effects of vanadium substituted Dawson- and Keggin-type heteropoly acids (W, P) on the polymerization of methyl methacrylate (MMA) were investigated by differential scanning calorimetry (DSC). The results show that in terms of the same heteropoly acid, the rate of polymerization of MMA decreases continuously and the inhibition effect of heteropoly acid is better with increasing the amount of heteropoly acid; in terms of the different heteropoly acid, the rate of polymerization of MMA decreases continuously with the increasing of Vanadium atom number, that is to say, the more containing Vanadium atom, the better inhibition effect of heteropoly acid. On the whole, the inhibition effects of Dawson-type heteropoly acid are better than Keggin-type heteropoly acid.
| Original language | English |
|---|---|
| Pages (from-to) | 1697-1700 |
| Number of pages | 4 |
| Journal | Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities |
| Volume | 31 |
| Issue number | 9 |
| State | Published - Sep 2010 |
Keywords
- Dawson-type
- Heteropoly acid
- Inhibition effect
- Keggin-type
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