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用三溴络合物溴加成方法，研究苯乙烯分散聚合反应过程中单体转化率．研究结果发现，稳定剂聚乙烯基吡咯烷酮浓度对单体聚合反应转化率的影响很大．当稳定剂用量低于０．２ｇ／Ｌ时，苯乙烯的转化率很低，而当用量高于０．２５ｇ／Ｌ时，单体转化率大幅度提高，说明稳定剂既起到稳定成核的作用，还影响自由基的活性．增加苯乙烯浓度会提高单体转化率，介质的组成对单体转化率影响很大
The bromination of tribromide complexes was used to study the monomer conversion during the styrene dispersion polymerization. The results showed that the stabilizer polyvinylpyrrolidone concentration on the monomer polymerization reaction rate of great influence. When the amount of stabilizer is less than 0.2g / L, styrene conversion rate is very low, and when the amount is higher than 0.25g / L, the monomer conversion rate increased significantly, indicating that the stabilizer both play a stable nucleation The role of free radicals also affect the activity. Increasing the styrene concentration increases the monomer conversion, and the composition of the medium has a great effect on the monomer conversion