含螯合功能基高分子的合成表征及应用

Synthesis, Characterization and Application of a Functional Polymer with Chelation Group

本文利用聚苯乙烯与多聚甲醛、三氯化磷在氯化锌催化下，生成氯甲基化聚苯乙烯。氯甲基化聚苯乙烯与2—巯基—5—甲基—1，3，4—噻二唑（简称噻二唑）在有机碱存在下反应，生成具有螯合功能基的功能高分子．利用元素分析确定其氮含量为11．2％．对比噻二唑与功能高分子的红外光谱图，确定了其结构．该功能高分子与许多过渡金属离子如Ag+Cu+Cu+Fe3+及CO3+络合生成高分子金属络合物．因而，在环保上有望用于重金属离子的分离，也可用于贵金属离子的富集，具有潜在的应用价值．

A new polymer with chelation group has been prepared by reaction of 2-mercapto5-methyl-1, 3, 4-thiazole (Mttz) with chloromethylated polystyrene which was obtained by reaction of polystyrene with polyoxymethylene and phosphorus trichloride catalyzed by zinc chloride. The nitrogen content in the new polymer is 11. 2% obtained by elemental analyser. Its structure is characterized by comparing its IR spectrogram with that of Mttz. This functional polymer can react with many metal ions as Ag+, Cu2+, Cu+,Fe+3 and Co+3 to generate coordinate complexes. Therefore, it may be used in extracting or separating heavy metal ions in enviromental protection.