초록 ▼

Hydrophilic porous polymeric membranes with high permeabilities, and processes for the preparation thereof are disclosed. Membranes may be prepared by including a preferably hydrophilic cross-linkable component such as PVP (either by inclusion into the polymer dope prior to casting, or coating or qu

Hydrophilic porous polymeric membranes with high permeabilities, and processes for the preparation thereof are disclosed. Membranes may be prepared by including a preferably hydrophilic cross-linkable component such as PVP (either by inclusion into the polymer dope prior to casting, or coating or quenching cast membranes); and treating the polymeric microfiltration or ultrafiltration membrane with a crosslinking agent to cross-link said cross-linkable component. Preferred cross-linking agents include Fenton's reagent.

대표청구항 ▼

The claims of the invention are as follows: 1. A method of forming a hydrophilic polymeric microfiltration or ultrafiltration membrane comprising the steps of:preparing a dope comprising a polymeric material comprising polyvinylidene fluoride and a cross-linkable component;preparing a polymeric micr

The claims of the invention are as follows: 1. A method of forming a hydrophilic polymeric microfiltration or ultrafiltration membrane comprising the steps of:preparing a dope comprising a polymeric material comprising polyvinylidene fluoride and a cross-linkable component;preparing a polymeric microfiltration or ultrafiltration membrane from the dope; andtreating the polymeric microfiltration or ultrafiltration membrane at a pH in the range of 2.0-9.0 with a hydroxyl radical generated by an aqueous solution comprising a transition metal catalyst, hydrogen sulfate, and hydrogen peroxide to cross-link said cross-linkable component.