TY - JOUR
T1 - Enhanced Barrier Performance of Engineered Paper by Atomic Layer Deposited Al2O3 Thin Films
AU - Mirvakili, Mehr Negar
AU - Bui, V.H.
AU - Van Ommen, J. Ruud
AU - Hatzikiriakos, Savvas G.
AU - Englezos, Peter
N1 - Accepted Author Manuscript
PY - 2016/5/11
Y1 - 2016/5/11
N2 - 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.
AB - 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.
KW - AlO ALD
KW - cellulose paper
KW - hydrophobicity
KW - plasma-assisted atomic layer deposition
KW - pulp refining
KW - water vapor transmission rate
UR - http://resolver.tudelft.nl/uuid:70acf661-2452-4645-a060-20fac2f8cbe4
UR - http://www.scopus.com/inward/record.url?scp=84973351621&partnerID=8YFLogxK
U2 - 10.1021/acsami.6b02292
DO - 10.1021/acsami.6b02292
M3 - Article
AN - SCOPUS:84973351621
SN - 1944-8244
VL - 8
SP - 13590
EP - 13600
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 21
ER -