Polymerization of acrylonitrile by ceric salt in the presence of starch. Vinyl polymerization. L<sup>1</sup>.

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<jats:title>Abstract</jats:title><jats:p>A graft copolymer of polyacrylonitrile with starch was obtained by radical polymerization of acrylonitrile in the presence of ceric salt and amylose, accompanied by a considerable amount of homopolymer of acrylonitrile. The rate of polymerization was faster in dimethyl sulfoxide than in water. The following empirical rate equations were presented.</jats:p><jats:p><jats:disp-formula> <jats:graphic xmlns:xlink="http://www.w3.org/1999/xlink" position="anchor" xlink:href="urn:x-wiley:0025116X:media:MACP020420114:nueq001"><jats:alt-text>equation image</jats:alt-text></jats:graphic> </jats:disp-formula> where A, B and C are constants and [S], [M] and [TCe<jats:sup>4+</jats:sup>] are the concentration of starch, acrylonitrile and total ceric compounds respectively. The differences between the two equations were discussed.</jats:p>

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