新型多胺型聚苯乙烯树脂的合成及性能研究

Synthesis and Property of A Novel Polyamine-type Polystyrene Resin

摘要:

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，合成了一种新型的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、时间和温度等反应条件对树脂合成的影响，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小时，制得的多胺型聚苯乙烯树脂的全交换容量为4.35 mmol•g-1，树脂对4-硝基苯酚的平衡吸附量为192.43 mg•g-1。

Abstract:

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, time and temperature were discussed. The stability and the adsorption property of the polyamine-type polystyrene resin toward 4-nitrophenol were also studied. The results showed that the complete exchange capacity of the synthesized resin is 4.35 mmol•g-1 when the synthetic reactions take place in 1,2,4-trimethylbenzene by toluenesulfonic acid as catalyst at 160℃ for 20 hours. The equilibrium adsorption capacity of the synthesized resin toward 4-nitrophenol is 192.43 mg•g-1.