Abstract
The influence of methallyl sulphonate and itaconic acid on the kinetics of the copolymerization of acrylonitrile and methyl acrylate has been investigated in an aqueous solution of sodium thiocyanate, using DAA and 4,4′-azo-bis (4-cyano-pentanol-1 as initiators). Methallyl sulphonate and itaconic acid participate in the chain propagation reaction and inhibit the copolymerization of acrylonitrile and methyl acrylate. The orders of the copolymerization reaction in respect to initiators have been calculated, the values being determined by the influence of the methallyl sulphonate and itaconic acid. The action of methallyl sulphonate and itaconic acid lead to a reduction in the rate constant for the breakdown of 4,4′-azo-bis (4-cyano-pentanol-1). The orders of the copolymerization reaction have been calculated, as well as the rates of initiation relative to the total concentration of monomers. The effective rates of inhibition have been determined for the copolymerization of acrylonitrile and methyl acrylate with methallyl sulphonate and itaconic acid as the inhibitors. The effective activation energies have been calculated for the studied reactions.
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