Enhanced water vapor barrier properties for biopolymer films by polyelectrolyte multilayer and atomic layer deposited Al2O3 double-coating
| Autor: | Terhi Hirvikorpi, Maarit Karppinen, Ali Harlin, Mikko Salomäki, Mika Vähä-Nissi, Sami Areva, Juuso T. Korhonen |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
water vapor barrier
Materials science layer-by-layer deposition Inorganic chemistry ta221 General Physics and Astronomy Aluminum oxide engineering.material Chitosan chemistry.chemical_compound Atomic layer deposition ta116 ta218 polyelectrolyte ta214 ta114 Layer by layer Surfaces and Interfaces General Chemistry Condensed Matter Physics Polyelectrolyte Surfaces Coatings and Films chemistry Chemical engineering Double coating ALD polylactide atomic layer deposition engineering Biopolymer Layer (electronics) Water vapor |
| Zdroj: | Hirvikorpi, T, Vähä-Nissi, M, Harlin, A, Salomäki, M, Areva, S, Korhonen, J T & Karppinen, M 2011, ' Enhanced water vapor barrier properties for biopolymer films by polyelectrolyte multilayer and atomic layer deposited Al2O3 double-coating ', Applied Surface Science, vol. 257, no. 22, pp. 9451-9454 . https://doi.org/10.1016/j.apsusc.2011.06.031 |
| ISSN: | 0169-4332 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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