US 12,485,364 B2
Multi-modal ion-exchange membranes for rapid separations
Jinxiang Zhou, Clemson, SC (US)
Assigned to CLEMSON UNIVERSITY RESEARCH FOUNDATION, Clemson, SC (US)
Filed by CLEMSON UNIVERSITY, Clemson, SC (US)
Filed on Aug. 10, 2018, as Appl. No. 16/100,319.
Prior Publication US 2020/0047086 A1, Feb. 13, 2020
Int. Cl. B01D 15/38 (2006.01); B01D 15/36 (2006.01); B01J 20/28 (2006.01); B01J 20/32 (2006.01); B01J 39/26 (2006.01); B01J 47/014 (2017.01); B01J 47/02 (2017.01); C07K 1/18 (2006.01)
CPC B01D 15/3847 (2013.01) [B01D 15/36 (2013.01); B01J 20/28033 (2013.01); B01J 20/327 (2013.01); B01J 20/3278 (2013.01); B01J 20/3285 (2013.01); B01J 39/26 (2013.01); B01J 47/014 (2017.01); B01J 47/02 (2013.01); C07K 1/18 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A multi-modal ion exchange membrane comprising:
a porous membrane substrate;
a plurality of polymers grafted at a surface of the porous membrane substrate; and
a plurality of ligands bonded to and pendant from each of the grafted polymers, each of the ligands that is bonded to and pendant from each grafted polymer providing first and second modes of sorptive functionality, the first mode of sorptive functionality being an ionic fixed charge at a binding site linking the ligand with the grafted polymer to which it is bonded to and pendant from, the second mode of sorptive functionality being a component of the ligand that is bonded to and pendant from the grafted polymer.