【摘要】 通过大孔苯乙烯-二乙烯苯共聚体的硝化、还原和重氮化反应制得的交联聚苯乙烯重氮盐分别同取代酚(或芳香胺)羧酸或磺酸化合物(如水杨酸、对羟基苯甲酸、2,4-二羟基苯甲酸、没食子酸、2-羟基-3-羧基萘、磺基水杨酸、对氨基苯磺酸、4-羟基萘磺酸)和水杨醛等进行偶合反应制得了一类新型阳离子交换树脂。另外,还研究了反应介质的pH值和偶合试剂的结构等因素对偶合反应的影响。 合成的离子交换树脂对铜离子和铁离子等有良好的选择性和对某些维生素和抗菌素有好的吸附-解吸性能。更多还原

【Abstract】 The diazonium salts of cross-linked polystyrene were prepared by nitration, reduction and diazotization of macrorecticular styrene-divinyl-benzene copolymers.The diazonium salts were coupled with hydroxy aryl derivatives and amino phenyl derivative, e. g. salicylic acid, p-hydroxybenzoic acid, 2,4-dihydroxybenzoic acid, gallic acid, 2-hydroxy-3-naphthoic acid, sulfosali-cylic acid, 4-hydroxynaphthalene sulfonic acid, p-aminobenzene sulfonic acid, and with salicylaldehyde, respectively. Thus, a series of new cation exchange resins were prepared.The influence of pH value of the reaction medium and of different structures of the hydroxy aryl derivatives on the coupling reaction were investigated.The new resins have excellent selectivity for the copper, iron ions etc. and show also good adsorption-elution properties for some vitamines and antibiotics.更多还原