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Open AccessArticle

Elaboration of High Permeable Macrovoid Free Polysulfone Hollow Fiber Membranes for Air Separation

1
D.Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
2
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119991 Moscow, Russia
*
Author to whom correspondence should be addressed.
Fibers 2019, 7(5), 43; https://doi.org/10.3390/fib7050043
Received: 31 March 2019 / Revised: 5 May 2019 / Accepted: 13 May 2019 / Published: 15 May 2019
(This article belongs to the Special Issue Polymer Hollow Fiber Membrane 2019)
In this work, polysulfone hollow fibers with oxygen permeance 70 L (STP)/(m2·h·bar) and selectivity α(O2/N2) = 6 were obtained. A decrease in the dope solution temperature allowed to diminish macrovoids due to the increase of the dope viscosity from 15.5 Pa·s at 62 °C to 35 Pa·s at 25 °C. To reduce the fiber diameter, thereby increasing the packing density, they were spun at high linear velocities. A hollow fiber membrane element was produced with effective membrane area 2.75 m2 and packing density 53%. Its air separation performance was evaluated to bridge laboratory studies and practical application. View Full-Text
Keywords: hollow fiber membranes; polysulfone; air; gas separation; nitrogen hollow fiber membranes; polysulfone; air; gas separation; nitrogen
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MDPI and ACS Style

Dibrov, G.; Ivanov, M.; Semyashkin, M.; Sudin, V.; Fateev, N.; Kagramanov, G. Elaboration of High Permeable Macrovoid Free Polysulfone Hollow Fiber Membranes for Air Separation. Fibers 2019, 7, 43.

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