二(β-氨基乙基)胺型聚苯乙烯树脂的合成和性能研究  

SYNTHESIS AND ADSORPTION PROPERTIES OF DI(β-AMINOETHYL) AMINE POLYSTYRENE RESINS

作　　者：孟启[1] 肖网琴[1] 戎志峰[1] 周长清[1] 孙小强[1] 

机构地区：[1]常州大学石油化工学院,常州213000

出　　处：《离子交换与吸附》2014年第3期258-266,共9页Ion Exchange and Adsorption

基　　金：江苏省高校自然科学重大基础研究项目(项目编号08KJA430001)

摘　　要：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%。The synthesis of di（β-aminoethyl） amine polystyrene resins （PS-DAA） mainly involved three steps： （i） protection of the diethylenetriamine （DETA） with Boc groups; （ii） amino reaction between the chloromethyl group of polystyrene microsphcres （PS-Cl） and the secondary amino group of the protective DETA; （iii） de-protection of the Boc groups from the functionalized microspheres. The slructure of PS-DAA and its chelating properties of Cu2＋ were studied. The result showed that compared to diethylenelriamine resins （PS-DETA）, PS-DAA had higher adsorption speed, larger chelating ability, more complete desorption efficiency and more facilitated recovery process. The adsorption capacity of Cu2＋ was 2.42mmol/g and the desorption efficiency was 99.8%. The activity can be as high as 95.0% after repeating adsorption and desorption processes for three times.

关 键 词：二乙烯三胺 树脂 吸附 CU2+ 

分 类 号：O632.6[理学—高分子化学]