Abstract
Polyacrylonitrile (PAN) ultrafiltration (UF) membranes were prepared by the pretreatment (gas–liquid interfacial chemical reaction) and the phase inversion process from a casting solution containing dimethylacetamide (DMAC) as a solvent and CaCl 2/NH 3·H 2O/H 2O as a composite additive. Deionized (DI) water was used as a coagulant. The membranes were characterized in terms of the pure water fluxes, protein retention and direct field emission scanning electron microscopy (FESEM) observations. The effects of gas–liquid interfacial chemical reaction on the membrane performance were investigated by changing the pretreatment time, CO 2 contacting method (static or flowing) and Partial pressure of CO 2. The gas–liquid interfacial chemical reaction had great influence on reducing pore size and increasing porosity of PAN membrane.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
