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Coatings 2018, 8(8), 265; https://doi.org/10.3390/coatings8080265

Effect of Adding UV Absorbers Embedded in Carbonate Calcium Templates Covered with Light Responsive Polymer into a Clear Wood Coating

Department of Wood and Forest Sciences, Université Laval, Québec City, QC G1V 0A6, Canada
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Received: 24 June 2018 / Revised: 19 July 2018 / Accepted: 28 July 2018 / Published: 28 July 2018
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Abstract

The limited durability of clear coatings is a major issue for the coating and wood industry. The addition of organic UV absorbers improves coating resistance by the absorption and the conversion of the UV radiation into harmless heat. Organic UVAs are prone to degradation and can migrate in the binder of coatings. In this study, commercial UVAs and HALS have been entrapped into CaCO3 templates coated with stimuli responsive polymers. Microspheres were incorporated into a clear acrylic water-based coating formulation. The formulation was applied on glass and wood panels and was placed into an artificial UV chamber. This study presents a comparison between the aesthetic behavior of coating formulations with free and encapsulated commercial UVAs and HALS during the accelerated ageing test. Encapsulation of UVAs was confirmed by XPS and TGA analysis. Results have shown that the coating’s aesthetic was slightly improved when using the encapsulated products. View Full-Text
Keywords: coatings; stimuli-sensitive polymers; structure-property relationships coatings; stimuli-sensitive polymers; structure-property relationships
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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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Queant, C.; Blanchet, P.; Landry, V.; Schorr, D. Effect of Adding UV Absorbers Embedded in Carbonate Calcium Templates Covered with Light Responsive Polymer into a Clear Wood Coating. Coatings 2018, 8, 265.

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