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International Journal of Polymer Science
Volume 2012 (2012), Article ID 637837, 6 pages
http://dx.doi.org/10.1155/2012/637837
Research Article

Fundamental Investigations Regarding Barrier Properties of Grafted PVOH Layers

1Materials Development Department, Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Straße 35, 85354 Freising, Germany
2BT3 Technologies, Impasse Bellevue 8, 38240 Meylan, France
3Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstraße 34, 80335 Munich, Germany

Received 25 May 2012; Accepted 5 September 2012

Academic Editor: Benny Dean Freeman

Copyright © 2012 Markus Schmid et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The current work focuses on fundamental investigations regarding the barrier properties of grafted PVOH layers produced by the Transfer Method. The layers (or papers) used for the different experiments were produced and grafted during the course of this work. Papers with different types of PVOH (different Mowiol types) were produced by coating. Experiments using different parameters (temperature, reaction duration, and concentration) were performed using the Transfer Method. Contact angle measurements and Cobb60 measurements were carried out on the grafted and untreated PVOH layers. Furthermore, the water vapour transmission rate of the PVOH layers was determined. The results of this work showed that the method of chromatogeny or chromatogenic chemistry improves the water vapour barrier properties of grafted PVOH layers enormously.