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Environmental friendly and sustainable gas barrier on porous materials: Nanocellulose coatings prepared using spin- and dip-coating
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Fibre and Particle Engineering Laboratory, University of Oulu.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-8909-3554
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-4762-2854
2016 (English)In: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 93, p. 19-25Article in journal (Refereed) Published
Abstract [en]

In this study, environmental friendly and sustainable coatings of nanocellulose (NC) were prepared using spin- and dip-coating methods, on two different porous cellulose substrates. Microscopy studies showed that spin-coating technique was suitable for the substrate with smaller pore size, while the dip-coating was suitable for the substrate with larger pore size. The coating thickness ranged from some hundreds of nanometers for the spin-coated layers, to some micrometers for the dip-coated ones. It was also seen that the contact angle increased with the coating thickness and roughness. NC coating resulted in low oxygen permeability (between 0.12 and 24 mL ∗ μm/(m2 ∗ 24 h ∗ kPa)) at 23% RH, but at 50% RH the oxygen permeability was too high to be measured, except for the dip-coated sample with 23 μm thickness. Also, it was seen that eight month storing reduced the barrier properties of the coatings when compared with fresh materials. These results indicate that NC coatings have a great potential as sustainable alternative coating on paperboard.

Place, publisher, year, edition, pages
2016. Vol. 93, p. 19-25
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-11802DOI: 10.1016/j.matdes.2015.12.127ISI: 000369587500003Scopus ID: 2-s2.0-84957797792Local ID: ad036aa4-4d44-43ef-9339-ecea3f21f228OAI: oai:DiVA.org:ltu-11802DiVA, id: diva2:984752
Note

Validerad; 2016; Nivå 2; 20151228 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Herrera, MarthaMathew, Aji P.Oksman, Kristiina

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