Effects of Dry-Jet Wet Spinning Parameters on Properties of Polysulfone Hollow Fiber Membranes

• Published in: Russian journal of applied chemistry Vol. 93; no. 4; pp. 554 - 563
• Main Authors: Matveev, D. N., Vasilevskii, V. P., Borisov, I. L., Volkov, V. V., Volkov, A. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.04.2020; Springer Nature B.V
• Subjects: Air gaps; Carbon dioxide; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Extrusion; Fluid pressure; Hollow fiber membranes; Industrial Chemistry/Chemical Engineering; Knudsen flow; Macromolecular Compounds and Polymeric Materials; Parameters; Permeability; Polysulfone resins; Properties (attributes); Selectivity; Wet spinning; dry-jet wet spinning; hollow fiber membrane; gas permeability; polysulfone
• ISSN: 1070-4272; 1608-3296
• DOI: 10.1134/S1070427220040102

The influence of parameters of the dry-jet wet spinning process was studied on properties of porous polysulfone hollow fiber membranes. The air gap distance, the dope extrusion pressure, bore fluid pressure and temperature were chosen as the studied parameters. Their effect on the geometric and morphological properties of membranes was investigated. The optimal parameters were revealed for the formation of polysulfone hollow fiber membranes, promising for use as porous supports of composite membranes. High gas permeability were achieved with pore sizes providing the Knudsen flow regime: carbon dioxide permeability P/l (CO 2 ) = 48.3 m 3 m –2 h –1 atm –1 , and values of ideal selectivity α = 2.63 and 0.87 for He/CO 2 and CO 2 /N 2 gas pairs, respectively.