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Charged ultrafiltra...
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Aguilar-Sanchez, AndreaStockholms universitet,Institutionen för material- och miljökemi (MMK)
(author)
Charged ultrafiltration membranes based on TEMPO-oxidized cellulose nanofibrils/poly(vinyl alcohol) antifouling coating
- Article/chapterEnglish2021
Publisher, publication year, extent ...
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2021
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Royal Society of Chemistry (RSC),2021
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:su-192457
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-192457URI
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https://doi.org/10.1039/d0ra10220bDOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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This study reports the potential of TEMPO-oxidized cellulose nanofibrils (T-CNF)/poly(vinyl alcohol) (PVA) coatings to develop functionalized membranes in the ultrafiltration regime with outstanding antifouling performance and dimensional/pH stability. PVA acts as an anchoring phase interacting with the polyethersulfone (PES) substrate and stabilizing for the hygroscopic T-CNF via crosslinking. The T-CNF/PVA coated PES membranes showed a nano-textured surface, a change in the surface charge, and improved mechanical properties compared to the original PES substrate. A low reduction (4%) in permeance was observed for the coated membranes, attributable to the nanometric coating thickness, surface charge, and hydrophilic nature of the coated layer. The coated membranes exhibited charge specific adsorption driven by electrostatic interaction combined with rejection due to size exclusion (MWCO 530 kDa that correspond to a size of similar to 35-40 nm). Furthermore, a significant reduction in organic fouling and biofouling was found for T-CNF/PVA coated membranes when exposed to BSA and E. coli. The results demonstrate the potential of simple modifications using nanocellulose to manipulate the pore structure and surface chemistry of commercially available membranes without compromising on permeability and mechanical stability.
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Jalvo, BlancaStockholms universitet,Institutionen för material- och miljökemi (MMK)(Swepub:su)bjalv
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Mautner, Andreas
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Rissanen, Ville
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Kontturi, Katri S.
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Abdelhamid, Hani NasserStockholms universitet,Institutionen för material- och miljökemi (MMK)(Swepub:su)hnass
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Tammelin, Tekla
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Mathew, Aji P.Stockholms universitet,Institutionen för material- och miljökemi (MMK)(Swepub:su)maji
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Stockholms universitetInstitutionen för material- och miljökemi (MMK)
(creator_code:org_t)
Related titles
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In:RSC Advances: Royal Society of Chemistry (RSC)11:12, s. 6859-68682046-2069
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