Characterization of Ultrafiltration Membranes by Polymer Transport Measurements

Abstract

A method has been developed for characterizing the transport properties of ultrafiltration membranes. A solution of a polydisperse polymer is employed, and a steady-state sample of the retentate and ultrafiltrate is taken. Analysis of the amount of polymer in each stream and determination of its molecular weight distribution by gel permeation chromatography allow a complete characterization of the ultrafiltration membrane.