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Strategies for Tailoring the Pore-Size Distribution of Virus Retention Filter Papers
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanotechology and Functional Materials)
2016 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 8, no 22, 13759-13767 p.Article in journal (Refereed) Published
Abstract [en]

The goal of this work is to demonstrate how the pore-size distribution of the nanocellulose-based virus-retentive filter can be tailored. The filter paper was produced using cellulose nanofibers derived from Cladophora sp. green algae using the hot-press drying at varying drying temperatures. The produced filters were characterized using scanning electron microscopy, atomic force microscopy, and N2 gas sorption analysis. Further, hydraulic permeability and retention efficiency toward surrogate 20 nm model particles (fluorescent carboxylate-modified polystyrene spheres) were assessed. It was shown that by controlling the rate of water evaporation during hot-press drying the pore-size distribution can be precisely tailored in the region between 10 and 25 nm. The mechanism of pore formation and critical parameters are discussed in detail. The results are highly valuable for development of advanced separation media, especially for virus-retentive size-exclusion filtration.

Place, publisher, year, edition, pages
Uppsala, 2016. Vol. 8, no 22, 13759-13767 p.
Keyword [en]
virus-retentive filtration; nanocellulose; paper making; size-exclusion filtration; Cladophora cellulose; hydraulic permeability
National Category
Nano Technology
Identifiers
URN: urn:nbn:se:uu:diva-294387DOI: 10.1021/acsami.6b03093ISI: 000377642100012PubMedID: 27144657OAI: oai:DiVA.org:uu-294387DiVA: diva2:929719
Funder
Knut and Alice Wallenberg FoundationStiftelsen Olle Engkvist Byggmästare
Available from: 2016-05-19 Created: 2016-05-19 Last updated: 2016-07-25Bibliographically approved

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