EVALUATION OF THE POSSIBILITY OF UTILIZATION OF POLY(AMIDESULFONAMIDE)S (PASAS) IN ULTRAFILTRATION TECHNOLOGY

Ultrafiltration (UF) membranes of six selected poly(amidesulfonamide)s (PASAs) were prepared and studied. The pure water flux and the retent ion of albumin (bovine serum) were used to evaluate the quality of the UF performance of the fabricated membrane. Membranes with good mechan ical strength were obtained by using the phase inversion method. A com parison of the UF performance of the PASA membranes fabricated from a casting solution containing 12% w/w PASAs and 4% w/w lithium bromide i n dimethylacetamide was made. The best retention of albumin (bovine se rum) by membranes prepared under the conditions studied from the selec ted homopolymers of PASAs, and their corresponding pure water flux at 0.207 MPa, ranged from 84.6 to 100% and 120 to 396 L m(-2) h(-1), resp ectively. (C) 1998 John Wiley & Sons, Inc.