Abstract
Macroreticular ion-exchange resins with 4-vinylpyrirline grafted onto styrene-divinylbenzene were synthesized by the suspension polymerization technique. Study of effects of degree of grafting on the texture of S-DVB copolymer and on the ion exchange kinetics is presented. The degree of grafting was controlled by the time of graft polymerization reaction. It was found that 2 to 3 hours of reaction time was found to be the optimum for the synthesis of the ion-exchangers with good ion exchange kinetics and reasonable capacity. Infrared spectroscopic monitoring of residual double bonds, ion exchange capacity, break through capacity for ferric chloride complex, pore volume by mercury porosimetery and self diffusion coefficient for ferric chloride complex are reported.
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