Fabrication of membranes for the liquid separation Part 2: Microfiltration membranes prepared from immiscible blends containing polysulfone and poly(1-vinylpyrrolidone-co-acrylonitrile) copolymers
- Authors
- Moon, EJ; Kim, JW; Kim, CK
- Issue Date
- Apr-2006
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- polysulfone; poly(1-vinylpyrrolidone-co-acrylonitrile) copolymer; immiscible blend; microfiltration membrane; phase inversion method
- Citation
- JOURNAL OF MEMBRANE SCIENCE, v.274, no.1-2, pp 244 - 251
- Pages
- 8
- Journal Title
- JOURNAL OF MEMBRANE SCIENCE
- Volume
- 274
- Number
- 1-2
- Start Page
- 244
- End Page
- 251
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/24371
- DOI
- 10.1016/j.memsci.2005.08.017
- ISSN
- 0376-7388
1873-3123
- Abstract
- In the previous research, ultratiltration membranes exhibiting excellent performance were produced from the miscible blends of polysulfone (PSf) and poly(1-vinylpyrrolidone-co-acrylonitrile) (P(VP-AN)) copolymers. PSf formed miscible blend with P(VP-AN) copolymers containing AN from 2 to 16 wt%, while other P(VP-AN) copolymers were not miscible with PSf. In this study, microfiltration membranes are prepared from immiscible blends of PSf and P(VP-AN) copolymers via traditional phase inversion process. Even though compatibility of PSf/P(VP-AN) blends depends on the AN content of copolymer, the average pore size existing on the membrane surface was about 0.25 mu m regardless of copolymer composition. These micropores stemmed from solvent-nonsolvent exchange channel formed at around the interface between PSf and P(VP-AN) when blends contain less than about 30 wt% of copolymer. Macropores (2 mu m) originated from the dispersed particles (or copolymer rich phase) was observed on the membrane surface along with micropores when the blend contained more than 40 wt% copolymers. (c) 2005 Elsevier B.V. All rights reserved.
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Collections - College of Engineering > School of Chemical Engineering and Material Science > 1. Journal Articles
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