Electrostatic Sieve Separation of Dextransulfate and Dextran by Negatively Charged Ultrafiltration Membranes

Abstract
Electrostatic sieve separation of dextransulfate (DS) and dextran (D). having similar molecular size, with negatively charged ultrafiltration membranes of poly(acrylonitrile-co-sodium styrenesulfonate) was carried out. The charged membrane has high rejection to DS with separation factor αD/DS of approximately 25.