Cellulose acetate (CA), a hydrophilic membrane material, was selected to prepare ultrafiltration membrane for the aim of achieving high-performance membranes with respect to flux and rejection characteristics. In order to prepare membranes with improved properties, blending of cellulose acetates with different degrees of substititution(DS) has been attempted. In this study, polymeric blend ultrafiltration membranes based on cellulose acetate with different DS were prepared by phase inversion technique. Scanning electron microscopy (SEM), atomic force microscopy (AFM), and contact angle are used to understand the influence of DS on the properties of modified membranes. The blend membranes prepared were subjected to the separation of egg albumin (EA). The separation and permeate flux efficiencies of the blend membranes were discussed.

Nonwoven fibers of cellulose triacetate (CTA) were continuously electrospun by using DMSO/chloroform co-solvent system and the size and morphology of fibers were investigated. It was found that the concentration of 8wt% CTA fibers were obtained from DMSO/chloroform with volume ratio of 1:1, 3:2, 2:1, 3:1. The average diameters of CTA fiber was decreased with decreasing chloroform content in the mixed solvent. The minimum diameter of the continuous electrospun cellulose triacetate fibers obtained in this work ranged between 210 and 880 nm.