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Waterborne nanocell...
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Aguilar-Sanchez, AndreaStockholms universitet,Institutionen för material- och miljökemi (MMK)
(författare)
Waterborne nanocellulose coatings for improving the antifouling and antibacterial properties of polyethersulfone membranes
- Artikel/kapitelEngelska2021
Förlag, utgivningsår, omfång ...
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Elsevier BV,2021
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:kth-289914
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-289914URI
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https://doi.org/10.1016/j.memsci.2020.118842DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-186529URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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QC 20210217
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This article presents a waterborne nanocellulose coating process to change the surface characteristics and mitigate fouling of commercially available polyethersulfone (PES) microfiltration membranes. An extensive comparative study between nanoporous and nano-textured layers composed of cellulose nanocrystals (CNC) or TEMPO-oxidized cellulose nanofibrils (T-CNF), which were coated on the PES membrane by taking advantage of the electrostatic interactions between the PES substrate, a polyallylamine hydrochloride (PAHC1) anchoring layer, and the nanocellulose functional layer. Coated PES membranes exhibited decreased surface roughness and pore sizes as well as rejection of compounds with a M-w above 150 kDa, while the water permeability and mechanical properties of remained largely unaffected. The coatings improved the wettability as confirmed by a reduction of the contact angle by up to 52% and exhibited a higher negative surface charge compared to the uncoated membranes over a pH range of 4-8. A significant reduction in organic fouling was observed for the coated membranes demonstrated by bovine serum albumin (BSA) adsorption studies on T-CNF and CNC surfaces using Quartz Crystal Microbalance with Dissipation monitoring (QCM-D), UV-vis spectroscopy and FTIR mapping after exposing the membranes to dynamic adsorption of BSA. The T-CNF coating exhibited effective antibacterial action against Escherichia coli (E. coli) attributed to the pH reduction effect induced by the carboxyl groups; while CNC coatings did not show this property. This work demonstrates a simple, green, and easy-to-scale layer-by-layer coating process to tune the membrane rejection and to improve antifouling and antibacterial properties of commercially available membranes.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Jalvo, BlancaStockholms universitet,Institutionen för material- och miljökemi (MMK)(Swepub:su)bjalv
(författare)
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Mautner, AndreasUniv Vienna, Fac Chem, Inst Mat Chem & Res, Polymer & Composite Engn PaCE Grp, Wahringer Str 42, A-1090 Vienna, Austria.
(författare)
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Nameer, SamerKTH,Ytbehandlingsteknik(Swepub:kth)u1ft0lsr
(författare)
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Pohler, TiinaVTT Tech Res Ctr Finland, Solut Nat Resources & Environm, POB 1000, FI-02044 Espoo, Finland.
(författare)
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Tammelin, TeklaVTT Tech Res Ctr Finland, Solut Nat Resources & Environm, POB 1000, FI-02044 Espoo, Finland.
(författare)
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Mathew, Aji P.Stockholms universitet,Institutionen för material- och miljökemi (MMK)(Swepub:su)maji
(författare)
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Stockholms universitetInstitutionen för material- och miljökemi (MMK)
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Journal of Membrane Science: Elsevier BV6200376-73881873-3123
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