Doping of inorganic minerals to hydrophobic membrane surface
AssigneeThe University of Hong Kong
InventorsKaimin Shih, Xiao-Yan Li, Xiao-Mao Wang, Tong Zhang
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Abstract
Disclosed is a membrane surface modification method. The method is applicable to a variety of hydrophobic membranes by doping selected inorganic particles. One act of the method involves the in-situ embedment of the inorganic particles onto the membrane surface by dispersing the particles in a non-solvent bath for polymer precipitation. Further membrane surface modification can be achieved by hydrothermally growing new inorganic phase on the embedded particles. The embedment of particles is for the subsequent phase growth.
Claims19
A method of surface modification to polymeric membranes by doping of inorganic minerals;
- wherein the doping comprises the in-situ embedment of inorganic particles during membrane solidification in a non-solvent bath.
A method of surface modification to inorganic mineral embedded polymeric membranes by growing inorganic minerals on the embedded particles under an elevated temperature in an aqueous solution.
An embedded polymeric membrane, comprising on the surface from 2% to 70% of inorganic particles, from 30% to 98% of a polymer, and from 0% to 70% grown inorganic material.
Dependencies are inferred from the claim text.