Hydrosilylation-based UV-curable polydimethylsiloxane pervaporation membranes for n-butanol recovery
- Authors
- Lee, Ju Yeon; Hwang, Seon Oh; Kim, Hyung-Ju; Hong, Do-Young; Lee, Jong Suk; Lee, Jung-Hyun
- Issue Date
- 31-1월-2019
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Polydimethylsiloxane; Pervaporation membrane; Mixed matrix membrane; UV-curing; Butanol recovery
- Citation
- SEPARATION AND PURIFICATION TECHNOLOGY, v.209, pp.383 - 391
- Indexed
- SCIE
SCOPUS
- Journal Title
- SEPARATION AND PURIFICATION TECHNOLOGY
- Volume
- 209
- Start Page
- 383
- End Page
- 391
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/68228
- DOI
- 10.1016/j.seppur.2018.07.045
- ISSN
- 1383-5866
- Abstract
- UV-cured polydimethylsiloxane (PDMS) pervaporation membranes (pristine and mixed matrix membranes (MMMs) containing silicalite-1 particles) were fabricated by using a new class of hydrosilylation-based UV-curable PDMS to facilitate the manufacturing process as well as to enhance performance for n-butanol recovery. Unlike the pristine (heat- and UV-cured) PDMS membranes which showed no discernible difference in their morphology, the UV-cured MMM exhibited a more loosely-packed structure with a rougher surface due to the protuberant features compared to the conventional heat-cured MMM. It was attributed presumably to the different curing mechanisms as well as the different compositions and chemical structures of the PDMS used. Importantly, the UV-cured MMM exhibited a higher permeate flux with a similar separation factor compared to the heat-cured counterpart. Our UV-cured MMM further enhanced separation performance at the elevated temperature with the highest flux of similar to 1,520 g m(2) h(-1) and separation factor of similar to 19.8 at 60 degrees C. This flux enhancement of the UV-cured MMM was explained by its unique morphology (higher surface roughness and loosely-packed structure) and more pronounced temperature-dependent diffusivity enhancement. Our proposed strategy could provide a more efficient and commercially viable route to fabricate highly permeable PDMS-based pervaporation membranes for efficient butanol recovery in the bio-butanol production process.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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