Preparation of Anion-Exchange Resin Based on Styrene-Divinylbenzene Copolymer Obtained by Suspension Polymerization Method

Macroporous beads were prepared by suspension polymerization in a batch reactor. The chloromethylated PS-DVB copolymers were aminated through two methods. In the first, the chloromethylated PS-DVB copolymer aminated with two kinds of tertiary amines, in which a first tertiary amine having higher alkyl moieties, preferably trioctylamine, was substituted at chloromethylated sites, and the second tertiary amine, having lower alkyl moieties, preferably triethylamine, was substituted at unreacted chloromethyated sites, which was the lowest accessible in comparison to the first amine. At the second, the chloromethylated PS-DVB beads had aminated with 45% aqueous trimethylamine. Structures of polymers were identified using DSC, TGA, SEM and FT-IR spectroscopy.