Are ion exchange resins soluble in any solvents?
No. Because of their three dimensional, highly cross-linked structure ion exchange resins are not soluble in any solvents. However, as the powders are produced by grinding, a small amount (<1% wt/wt) low cross-linked polymer is formed. This is referred to as ‘extractable polymer’, has molecular weight in the range 104 – 106, and does not affect the functioning of the ion exchange resin.
