期刊
APPLIED SURFACE SCIENCE
卷 257, 期 22, 页码 9451-9454出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2011.06.031
关键词
Atomic layer deposition; Layer-by-layer deposition; Polyelectrolyte; Water vapor barrier; Aluminum oxide; Polylactide
类别
资金
- VTT
- Metsaliitto Group
- Myllykoski Corporation
- Stora Enso Oyj
- UPM-Kymmene Oyj
- Academy of Finland [116254, 126528]
- Academy of Finland (AKA) [126528, 126528, 116254, 116254] Funding Source: Academy of Finland (AKA)
Commercial polylactide (PLA) films are coated with a thin (20 nm) non-toxic polyelectrolyte multilayer (PEM) film made from sodium alginate and chitosan and additionally with a 25-nm thick atomic layer deposited (ALD) Al2O3 layer. The double-coating of PEM + Al2O3 is found to significantly enhance the water vapor barrier properties of the PLA film. The improvement is essentially larger compared with the case the PLA film being just coated with an ALD-grown Al2O3 layer. The enhanced water vapor barrier characteristics of the PEM + Al2O3 double-coated PLA films are attributed to the increased hydrophobicity of the surface of these films. (C) 2011 Elsevier B. V. All rights reserved.
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