Gel ion exchange resin

Gel ion exchange resin

Gel type ion exchange resin, which is a homogeneous polymer gel structure, is composed of a chain like macromolecule polymerized by monomer and formed by a crosslinking agent inside the sphere. This structure is like a honeycomb, with staggered roadways. Ion exchange groups are distributed in various parts of the "roadway". The gap formed by the "roadway" is not a capillary pore, but a chemical hole or a gel hole. The pore size is related to the degree of crosslinking and expansion of the resin. The larger the degree of crosslinking, the smaller the pore size. When the resin is in hydration state, the macromolecular chains extend and the distance between the chains increases, and the gel pores expand. When the resin dries, the gel hole shrinks. The changes in the nature of the counterions, the concentration of the solution and the change of pH value will lead to the change of the gel pore size.

The pore size of the gel hole is very small, generally below 3nm. Only small diameter ions can get through, larger diameter molecules may plug the channel and affect the exchange capacity of the resin.

Keywords:Gel ion exchange resin,Ion exchange resin, IX resin, cation exchange resin, anion exchange resin

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