Microfiber aligned hollow fiber membranes from immiscible polymer solutions by phase inversion
- Authors
- Jung, Jun Tae; Wang, Ho Hyun; Kim, Jeong F.; Jeon, Seong Min; Park, Sang Hyun; Lee, Won Hee; Moon, Sun Ju; Drioli, Enrico; Lee, Young Moo
- Issue Date
- Jan-2021
- Publisher
- ELSEVIER
- Keywords
- Microfiberalignment; Phaseinversion; Polymerimmisciblesolution; Hollowfibermembrane
- Citation
- JOURNAL OF MEMBRANE SCIENCE, v.617, pp.1 - 11
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MEMBRANE SCIENCE
- Volume
- 617
- Start Page
- 1
- End Page
- 11
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/136080
- DOI
- 10.1016/j.memsci.2020.118654
- ISSN
- 0376-7388
- Abstract
- In this study, we report for the first time a pioneering method to prepare membranes with a fibrous morphology via phase inversion with extremely high pore connectivity. Microfiber aligned hollow fiber membranes were prepared via a polymer blend solution consisting of poly (vinylidene fluoride) with polysulfone in PolarClean (R) as a green solvent. The microfiber structure appeared only when controlled phase separation was performed with polymer blends. A systematic analysis has revealed that the shear rate and the reduced capillary number (alpha) of a blend solution significantly affected the morphology of the final membrane. The fabricated fibrous membranes exhibited six-fold higher water productivity compared to the best electrospun membranes reported in the literature, yet they remain highly scalable.
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