Filtration media with low protein absorbability

摘要

A porous polymeric medium having a low affinity for amide group-containing and adjuvant-containing materials is provided comprising a porous polyvinylidene difluoride substrate and a surface-modifying polymeric material having a low affinity for amide group-containing materials formed in situ at and covalently bonded to the surface of the porous polyvinylidene difluoride substrate, the surface-modifying polymeric material being derived from a mixture of first and second monomers. The first monomer includes an unsaturated monofunctional monomer having at least one hydroxyl group and the second monomer includes an unsaturated monomer.