Abstract
Development of novel ion-exchange resins is continuing to improve their performance of ionexchange rate, capacity, and durability. For example, porous ion-exchange resins of a hollowfiber membrane form were prepared by radiation-induced grafting of polymer brushes and subsequent chemical modifications. The ion-exchange resins exhibited a higher rate and capacity for protein capturing than conventional ion-exchange beads because of convective transport of the protein through the pores and multilayer binding of the protein to the ion-exchange polymer brushes.
