CROSS LINKING TREATMENT OF POLYMER MEMBRANES

摘要

Methods of forming a hydrophilic porous polymeric membrane which include
preparing a porous polymeric membrane from a polymer blend which typically
contains a hydrophobic non crosslinkable component (e.g. PVdF) and a component
which is cross-linkable (for instance, PVP) and treating said porous polymeric
membrane under cross linking conditions to produce a modified membrane with
greatly improved water permeability and hydrophilic stability. Cross linking
condition include chemical (e.g. peroxodisulfate species), thermal or
radiation and/or combinations thereof. Non cross linked material may be washed
out if desired.