Evaluation of the porous structures of new polymer packing materials by inverse size-exclusion chromatography.

摘要: A highly cross-linked porous polymer resin based on styrene-divinylbenzene matrix with pores created by the use of micellar imprinting technique was used as chromatographic packing material. Its performance a column material in inverse size-exclusion chromatography compared non-imprinted same matrix. The structures (the pore size and porosity) resins dry wet states their relationships elution volume probe solutes (alkanes polystyrene standards) were established. Characteristic properties such specific volume, surface area porosity are results obtained other methods characterization mercury intrusion porosimetry, solvent regain nitrogen sorption. show that new can be separation small molecules. is molecules, larger (meso- macropores) provide much easier access to smaller (micropores) which useful separations.