Print Email Facebook Twitter Enhanced Barrier Performance of Engineered Paper by Atomic Layer Deposited Al2O3 Thin Films Title Enhanced Barrier Performance of Engineered Paper by Atomic Layer Deposited Al2O3 Thin Films Author Mirvakili, Mehr Negar (University of British Columbia) Bui, H.V. (TU Delft ChemE/Product and Process Engineering) van Ommen, J.R. (TU Delft ChemE/Product and Process Engineering) Hatzikiriakos, Savvas G. (University of British Columbia) Englezos, Peter (University of British Columbia) Date 2016-05-11 Abstract Surface modification of cellulosic paper is demonstrated by employing plasma assisted atomic layer deposition. Al2O3 thin films are deposited on paper substrates, prepared with different fiber sizes, to improve their barrier properties. Thus, a hydrophobic paper is created with low gas permeability by combining the control of fiber size (and structure) with atomic layer deposition of Al2O3 films. Papers are prepared using Kraft softwood pulp and thermomechanical pulp. The cellulosic wood fibers are refined to obtain fibers with smaller length and diameter. Films of Al2O3, 10, 25, and 45 nm in thickness, are deposited on the paper surface. The work demonstrates that coating of papers prepared with long fibers efficiently reduces wettability with slight enhancement in gas permeability, whereas on shorter fibers, it results in significantly lower gas permeability. Wettability studies on Al2O3 deposited paper substrates have shown water wicking and absorption over time only in papers prepared with highly refined fibers. It is also shown that there is a certain fiber size at which the gas permeability assumes its minimum value, and further decrease in fiber size will reverse the effect on gas permeability. Subject AlO ALDcellulose paperhydrophobicityplasma-assisted atomic layer depositionpulp refiningwater vapor transmission rate To reference this document use: http://resolver.tudelft.nl/uuid:70acf661-2452-4645-a060-20fac2f8cbe4 DOI https://doi.org/10.1021/acsami.6b02292 Embargo date 2017-05-11 ISSN 1944-8244 Source ACS applied materials & interfaces, 8 (21), 13590-13600 Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2016 Mehr Negar Mirvakili, H.V. Bui, J.R. van Ommen, Savvas G. Hatzikiriakos, Peter Englezos Files PDF Mirvakili_M.N._Enhanced_B ... 2016_1.pdf 2.59 MB Close viewer /islandora/object/uuid:70acf661-2452-4645-a060-20fac2f8cbe4/datastream/OBJ/view