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Open AccessCommunication
Polymers 2016, 8(3), 75; doi:10.3390/polym8030075

Polylactide/Montmorillonite Hybrid Latex as a Barrier Coating for Paper Applications

1
Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Applied Wood Materials, Überlandstrassse 129, CH-8600 Dübendorf, Switzerland
2
Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biointerfaces, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
3
Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Protection and Physiology, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
4
Cham Paper Group Schweiz AG, Fabrikstrasse, CH-6330 Cham, Switzerland
*
Authors to whom correspondence should be addressed.
Academic Editor: Naozumi Teramoto
Received: 11 January 2016 / Revised: 26 February 2016 / Accepted: 29 February 2016 / Published: 4 March 2016
(This article belongs to the Special Issue Biodegradable Polymers)
View Full-Text   |   Download PDF [1536 KB, uploaded 4 March 2016]   |  

Abstract

We developed a paper coating for the potential application in food packaging based on polylactide and montmorillonite. It is applied to the paper in the form of a stable, water-based latex with a solid content of 25–28 wt %. The latex is prepared from a commercially available polylactide, surfactants, montmorillonite, a plasticizer, chloroform (to be removed later) and water by an emulsion/solvent evaporation procedure. This coating formulation is applied to the paper substrate by bar-coating, followed by hot-pressing at 150 °C. The coated papers achieved up to an 85% improvement in water vapor transmission rates when compared to the pristine papers. The coating latex is prepared from inexpensive materials and can be used for a solvent-free coating process. In addition, the ingredients of the latex are non-toxic; thus, the coated papers can be safely used for food packaging. View Full-Text
Keywords: hybrid latex; paper coating; polylactide/montmorillonite hybrid coating; water-based coating latex; food packaging; water vapor transmission rate hybrid latex; paper coating; polylactide/montmorillonite hybrid coating; water-based coating latex; food packaging; water vapor transmission rate
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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. (CC BY 4.0).

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MDPI and ACS Style

Bandera, D.; Meyer, V.R.; Prevost, D.; Zimmermann, T.; Boesel, L.F. Polylactide/Montmorillonite Hybrid Latex as a Barrier Coating for Paper Applications. Polymers 2016, 8, 75.

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