Synthesis and characterization of low molecular weight cut off ultrafiltration membranes from cellulose propionate polymer

• Published in: Desalination Vol. 128; no. 1; pp. 57 - 66
• Main Authors: Khan, S., Ghosh, A.K., Ramachandhran, V., Bellare, J., Hanra, M.S., Trivedi, M.K., Misra, B.M.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 20-03-2000; Elsevier
• Subjects: Applied sciences; Cellulose propionate; Exact sciences and technology; Exchange resins and membranes; Forms of application and semi-finished materials; Polymer industry, paints, wood; Technology of polymers; Ultrafiltration membranes; Ultrafiltration membranes; Cellulose propionate; Solvent effect; Transport properties; Separation capacity; Solutes; Experimental study; Fabrication property relation; Water permeability; Ultrafiltration; Salt effect; Size effect; Membrane; Cellulose organic ester
• ISSN: 0011-9164; 1873-4464
• DOI: 10.1016/S0011-9164(00)00023-0

This paper describes the synthesis and characterization of low molecular weight cut-off ultrafiltration (UF) membranes from cellulose propionate (CP) polymer using dimethyl acetamide solvent. The casting conditions are studied with reference to changes in the nature of additive and additive to solvent ratio. The membranes are characterized in terms of product permeation rate, solute retention for different electrolytes, as a function of feed concentration and pressure. The retention of different dyes are also included. Molecular weight cut off profiles using polyethylene glycol solutes of different molecular weights are presented. The separation behaviour of oil-water and milk protein systems are presented in order to highlight the fouling resistance of CP membranes.