Title of article
Enhanced water vapor barrier properties for biopolymer films by polyelectrolyte multilayer and atomic layer deposited Al2O3 double-coating
Author/Authors
Terhi Hirvikorpi، نويسنده , , Mika V?h?-Nissi، نويسنده , , ALI HARLIN?، نويسنده , , Mikko Salom?ki، نويسنده , , Sami Areva، نويسنده , , Juuso T. Korhonen، نويسنده , , Maarit Karppinen، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2011
Pages
4
From page
9451
To page
9454
Abstract
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.
Keywords
Aluminum oxide , Water vapor barrier , Atomic layer deposition , Polyelectrolyte , Layer-by-layer deposition , Polylactide
Journal title
Applied Surface Science
Serial Year
2011
Journal title
Applied Surface Science
Record number
1014901
Link To Document