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Title: | Active Barrier Coating for Packaging Paper with Controlled Release of Sunflower Oils | Authors: | SAMYN, Pieter | Issue Date: | 2021 | Publisher: | MDPI | Source: | MOLECULES, 26 (12) (Art N° 3561) | Abstract: | The use of paper as a sustainable packaging material is favored, but it lacks sufficient barrier properties in terms of water repellence and oil resistance. Novel approaches consider active packaging materials or coatings with controlled release providing additional functionality for delivery of specific components to the surface. In this study, the development of a waterborne coating with organic nanoparticles and encapsulated sunflower oils is presented as a system for thermal release of the oil and on-demand tuning of the final barrier properties of the paper substrate. After synthesis of the nanoparticles, it seems that the encapsulation of various grades of sunflower oil (i.e., either poly-unsaturated or mono-unsaturated) strongly affects the encapsulation efficiency and thermal release profiles. The water contact angles are controlled by the oil release and chemical surface composition of the coating upon thermal heating. The oil resistance of the paper improves as a more continuous oil film is formed during thermal release. In particular, the chemical surface composition of the paper coatings is detailed by means of micro-Raman spectroscopy and surface imaging, which provide an analytical quantification tool to evaluate surface coverage, oil delivery, and variations in organic coating moieties. | Keywords: | paper;packaging;coating;barrier;encapsulation;release;vegetable oil;hydrophobicity;oleophobicity | Document URI: | http://hdl.handle.net/1942/36316 | e-ISSN: | 1420-3049 | DOI: | 10.3390/molecules26123561 | ISI #: | 000666001800001 | Rights: | 2021 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2022 |
Appears in Collections: | Research publications |
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File | Description | Size | Format | |
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Active Barrier Coating for Packaging Paper with Controlled Release of Sunflower Oils.pdf | Published version | 8.02 MB | Adobe PDF | View/Open |
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