Sorption of solvents by macroreticular, isoporous styrene polymers and the sulphonic cation exchangers based on them

Abstract

The swelling of macroreticular, isoporous styrene polymers with dense cross-linking has been found to be almost independent of the solvent type (with the exception of water). Some of the absorbed solvent fills the gaps in the polymer structure, while some enters the densely packed parts and causes their expansion. The structural stress of the original polymer after its sulphonation; which produces its unusual swelling capacity in solvents slightly solvating it will be retained to a large extent. The sulphonated polymers swell strongly in non-polar solvents, which makes them suitable for use with non-aqueous media.