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p ‐acetyl benzylidene triphenylarsonium ylide initiated radical terpolymerization of styrene, acrylonitrile and copper acrylate: synthesis, characterization and properties
Author(s) -
Shukla Prerna,
Srivastava A. K.
Publication year - 1996
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199612)41:4<407::aid-pi629>3.0.co;2-0
Subject(s) - acrylonitrile , copolymer , polymer chemistry , reactivity (psychology) , chemistry , styrene , acrylate , proton nmr , organic chemistry , polymer , medicine , alternative medicine , pathology
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. 1 H nuclear magnetic resonance (NMR), IR and elemental analysis have been used to characterized the terpolymer. Analysis of kinetic data indicates the following rate equation:$$R_{\rm p} \propto \left[ {{\rm ylide}} \right]^{0.5} \left[ {{\rm Sty}} \right]\left[ {{\rm AN}} \right]{1 \over {\left[ {{\rm CuA}} \right]}}$$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 r 1 (Sty) = 5 ± 2 and r 2 (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.