聚苯乙烯靶材料卤代改性研究

THE STUDY ON THE HALOGENATION OF POLYSTYRENE TARGET MATERIALS

介绍了聚苯乙烯亲电卤代反应机理，用大分子改性的方法进行卤代聚苯乙烯的合成。根据氯、溴、碘芳环取代活性顺序的不同，分别用氯甲基丁基醚、溴和碘在不同的催化条件下进行聚苯乙烯卤代反应。聚合物取代量可由反应时间和反应物化学计量控制。

The article introduces the reaction mechanism of arene electrophile substitution, and describes the synthesis of halogenated polystyrene(PS) by modifying macromolecules. According to the difference of active order of aryl ring substituted by chlorine,bromine and iodine, chloromethyl ethyl ether, bromine and iodine are respectively used in the PS substitution under the different catalytic conditions.The degree of substitution of polymer doped by bromine or iodine can be controlled by reaction time, while that of chloromethylation PS controlled by the stoichiometry.