聚苯乙烯硫代氨基脲螯合树脂的制备及其对重金属离子的吸附性能研究

Synthesis of Polystyrene N-Aminothiourea Chelating Resin and Its Adsorption of Heavy Metal Ion

以苯乙烯为单体采用分散聚合法合成聚苯乙烯微球,1,4-二氯甲氧基丁烷与聚苯乙烯反应得到氯甲基化聚苯乙烯,用氯甲基化聚苯乙烯与硫代氨基脲反应得到的聚苯乙烯硫代氨基脲螯合树脂。采用红外光谱法、扫描电镜、X射线光电子能谱对其结构及元素组成进行分析。考察了聚苯乙烯硫代氨基脲螯合树脂对Ag+、Cu2+、Pb2+和Cr3+重金属离子的吸附性能。聚苯乙烯硫代氨基脲螯合树脂对Ag+、Cu2+、Pb2+和Cr3+的吸附容量分别为16.38 mg/g、15.25 mg/g、13.69 mg/g和13.12 mg/g。

Polystyrene microspheres were synthesized by dispersion polymerization with styrene as monomer.Chloromethylated polystyrene was synthesized by 1,4- dichloro methoxybutane and polystyrene.Polystyrene N- aminothiourea chelating resin is synthesized by chloromethylated polystyrene and thiosemicarbazide.The structure and elements were analyzed by infrared spectroscopy,scanning electron microscopy（ SEM）,X- ray photoelectron spectroscopy.The adsorption performance of the polystyrene N- aminothiourea chelating resin for heavy metal ions Ag^＋,Cu^2 ＋,Pb^2 ＋and Cr^3 ＋were investigated.The adsorption capacity of polystyrene N- aminothiourea chelating resin for Ag^＋,Cu^2 ＋,Pb^2 ＋and Cr^3 ＋are 16.38 mg/g,15.25 mg/g,13.69 mg/g and 13.12 mg/g respectively.