以二乙烯三胺和氯甲基化聚苯乙烯树脂微球为起始原料,通过伯胺保护、树脂胺化、脱保护等3个步骤,合成了以二(β-氨基乙基)胺为功能基的聚苯乙烯树脂,分析了该树脂的结构,研究了其对Cu2+的螯合性能。与二乙烯三胺型树脂相比,本文合成的树脂具有吸附速度快、吸附容量大,脱附完全,易于重复使用等优点,对Cu2+吸附量达2.42mmol/g,脱附率为99.8%,吸附-脱附3次后,活性仍达95.0%。 Diethylenetriamine and chloromethylated polystyrene microspheres were used as starting materials to synthesize bis (β-aminoethyl) amine by the reaction of primary amine, resin amination and deprotection. Functional polystyrene resin, the structure of the resin was analyzed, and its chelating performance to Cu2 + was studied. Compared with diethylenetriamine resin, the resin synthesized in this paper has the advantages of fast adsorption rate, large adsorption capacity, complete desorption, easy reusability and so on. The adsorption capacity of Cu2 + is 2.42mmol / g, the desorption rate is 99.8% After three times of adsorption-desorption, the activity reached 95.0%.