The kinetic model equations of radiation-induced emulsion polymerization of styrene have been established, according to the nucleation model suggested in above paper. The monomer conversion in stage of region Ⅱ for the polymerization reaction is given as follows:,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42648356&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42648373&type=,http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=42648357&type=,Where A——fraction of micellar nucleation;,B——fraction of aqueous nucleation.,The curve of monomer conversion against polymerrization time, number of polymer particles and degree of polymerization calculated by these model equations are in agreement with the experimental results.