Thin Al2O3 barrier coatings onto temperature-sensitive packaging materials by atomic layer deposition

Thin (25 nm) and highly uniform Al2O3 coatings were deposited at relatively low temperatures of 80 and 100 C onto various bio-based polymeric materials (polylactide, cellulose, Galactoclugomannan, Polyhydroxy butyrate, pectin) using atomic layer deposition (ALD). The ALD-grown Al2O3 coating signific...

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Bibliographic Details
Published in:Surface & coatings technology 2011-08, Vol.205 (21-22), p.5088-5092
Main Authors: HIRVIKORPI, Terhi, VÄHÄ-NISSI, Mika, NIKKOLA, Juha, HARLIN, Ali, KARPPINEN, Maarit
Format: Article
Language:English
Subjects:
Aluminum oxide
Applied sciences
Barriers
Cellulose
Coatings
Cross-disciplinary physics: materials science
rheology
Deposition
Exact sciences and technology
Materials science
Metals. Metallurgy
Methods of deposition of films and coatings
film growth and epitaxy
Nanocomposites
Nanomaterials
Nanostructure
Pectin
Physics
Polylactides
Production techniques
Surface treatment
Surface treatments
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Summary:Thin (25 nm) and highly uniform Al2O3 coatings were deposited at relatively low temperatures of 80 and 100 C onto various bio-based polymeric materials (polylactide, cellulose, Galactoclugomannan, Polyhydroxy butyrate, pectin) using atomic layer deposition (ALD). The ALD-grown Al2O3 coating significantly enhanced the oxygen and water vapour barrier performance of these materials. Promising barrier properties were revealed for polylactide-coated board, hemicellulose-coated board as well as various biopolymer (polylactide, pectin and nano-fibrillated cellulose) films.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2011.05.017