多胺型聚苯乙烯树脂的合成及性能

Synthesis and Property of A Novel Polyamine-type Polystyrene Resin

以聚苯乙烯树脂为起始原料,经乙酰化后与三乙烯四胺进行缩合反应,合成了一种含有三乙烯四胺功能基的多胺型聚苯乙烯树脂。考察了溶剂、催化剂、物料比、时间和温度对树脂合成的影响,研究了树脂的稳定性及其对4-硝基苯酚的吸附性能。结果表明,以偏三甲苯为溶剂、对甲苯磺酸为催化剂,在160℃下反应20 h,制得的多胺型聚苯乙烯树脂的全交换容量为4.35 mmol/g,树脂对4-硝基苯酚的平衡吸附量为192.43 mg/g。

A novel polyamine-type polystyrene resin with triethylenetetramine functional group was synthesized from polystyrene resin through the acetylation followed by the condensation of triethylenetetramine. Effects of reaction solvent,catalyst,mole ratio of raw materials,reaction time and reaction temperature were discussed. The stability of the synthesized resin and its adsorption performance toward 4-nitrophenol were also studied. The results showed that the complete exchange capacity of the synthesized resin was 4. 35 mmol / g when 1,2,4-trimethylbenzene was used as a solvent,toluenesulfonic acid as a catalyst under 160 ℃ for 20 h,and the equilibrium adsorption capacity of 4-nitrophenol on the resin was 192. 43 mg / g.