p-acetyl benzylidene triphenylarsonium ylide initiated radical terpolymerization of styrene,acrylonitrile and copper acrylate: synthesis,characterization and properties |
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Authors: | Prerna Shukla A. K. Srivastava |
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Abstract: | 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. 1H nuclear magnetic resonance (NMR), IR and elemental analysis have been used to characterized the terpolymer. Analysis of kinetic data indicates the following rate equation: The overall activation energy is 38 kJ mol−1. The composition of terpolymer calculated from NMR and elemental analysis has been used to evaluate reactivity ratios as r1(Sty) = 5 ± 2 and r2(AN + CuA) = 0.4 ± 0.02 employing the Finemann–Ross method, which confirms its random origin. The terpolymer was thermally stable up to 2007deg;C. |
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Keywords: | terpolymerization kinetics thermal properties arsonium ylide styrene acrylonitrile copper acrylate |
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