Carboxylic crosslinked polystyrene(PS-COOH) microsphere has been prepared by Friedel-Crafts acylation with phthalic anhydride.

• 选用邻苯二甲酸酐以傅克酰基化反应制备了聚苯乙烯(PS)羧基化弱酸性离子交换树脂。