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Article

Formation of Polysulfone Hollow Fiber Membranes Using the Systems with Lower Critical Solution Temperature

1
Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus, 13 Surganov Str., 220072 Minsk, Belarus
2
Henan Academy of Sciences, Institute of Chemistry, 56 Hongzhuan Road, Jinshui District, Zhengzhou 450002, China
3
A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29, Leninsky Prospect, 119991 Moscow, Russia
*
Authors to whom correspondence should be addressed.
Academic Editor: Sagar Roy
Received: 15 January 2021 / Revised: 18 March 2021 / Accepted: 26 April 2021 / Published: 2 May 2021
This study deals with the investigation of the phase state of the polymer systems from polysulfone (PSF) with the addition of polyethylene glycol (PEG-400, Mn = 400 g·mol−1) and polyvinylpyrrolidone (PVP K-30, Mn = 40,000 g·mol−1) in N,N-dimethylacetamide (DMA), which feature lower critical solution temperatures (LCSTs). A fragment of the phase state diagram of the system PSF —PEG-400—PVP K-30—DMA was experimentally constructed in the following range of component concentrations: PSF 20–24 wt.%, PEG-400—35–38 wt.% and PVP—0–8 wt.%. It has been established that PVP addition substantially reduces the phase separation temperature down to 50–60 °C. Based on the obtained phase diagrams, a method for preparation of highly permeable hollow fiber membranes from PSF, which involves the processing of the dope solution at a temperature close to the LCST and the temperature of the bore fluid above the LCST, was proposed. Hollow fiber membranes with pure water flux of 1200 L·m−2·h−1 and a sponge-like macrovoid-free structure were obtained via LCST-thermally induced phase separation by free fall spinning technique. View Full-Text
Keywords: hollow fiber membranes; ultrafiltration; polysulfone; low critical solution temperature; non-solvent-induced phase separation; temperature-induced phase separation hollow fiber membranes; ultrafiltration; polysulfone; low critical solution temperature; non-solvent-induced phase separation; temperature-induced phase separation
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MDPI and ACS Style

Plisko, T.V.; Bildyukevich, A.V.; Zhao, L.; Huang, W.; Volkov, V.V.; Huang, Z. Formation of Polysulfone Hollow Fiber Membranes Using the Systems with Lower Critical Solution Temperature. Fibers 2021, 9, 28. https://0-doi-org.brum.beds.ac.uk/10.3390/fib9050028

AMA Style

Plisko TV, Bildyukevich AV, Zhao L, Huang W, Volkov VV, Huang Z. Formation of Polysulfone Hollow Fiber Membranes Using the Systems with Lower Critical Solution Temperature. Fibers. 2021; 9(5):28. https://0-doi-org.brum.beds.ac.uk/10.3390/fib9050028

Chicago/Turabian Style

Plisko, Tatiana V., Alexandr V. Bildyukevich, Liang Zhao, Weiqing Huang, Vladimir V. Volkov, and Zuohua Huang. 2021. "Formation of Polysulfone Hollow Fiber Membranes Using the Systems with Lower Critical Solution Temperature" Fibers 9, no. 5: 28. https://0-doi-org.brum.beds.ac.uk/10.3390/fib9050028

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