p-Acetyl Benzylidene Triphenylarsonium Ylide Initiated Radical Terpolymerization of Styrene, Acrylonitrile and Copper Acrylate: Synthesis, Characterization and Properties
✍ Scribed by Shukla, Prerna; Srivastava, A. K.
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 319 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0959-8103
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✦ Synopsis
Solution terpolymerization of styrene (Sty), acrylonitrile (AN) and copper acrylate (CuA) has been carried out in dimethylformamide at 90°C for 4 h using p-acetyl benzylidene triphenylarsonium ylide as radical initiator. 'H nuclear magnetic resonance (NMR), IR and elemental analysis have been used to characterize the terpolymer. Analysis of kinetic data indicates the following rate equation:
The overall activation energy is 38 kJmol-'. The composition of terpolymer calculated from NMR and elemental analysis has been used to evaluate reactivity ratios as r,(Sty) = 5 & 2 and r,(AN + CuA) = 0.4 & 0.02 employing the Finemann-Ross method, which confirms its random origin. The terpolymer was thermally stable up to 200°C.