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Depth-Resolved FTIR-ATR Imaging Studies of Coating Degradation during Accelerated and Natural Weathering─Influence of Biobased Reactive Diluents in Polyester Melamine Coil Coating
RISE Research Institutes of Sweden, Materials and Production, Corrosion.ORCID iD: 0000-0001-6438-1357
RISE Research Institutes of Sweden, Materials and Production, Corrosion.ORCID iD: 0000-0001-5982-2760
SSAB Europe, Sweden.
SSAB Europe, Sweden.
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2022 (English)In: ACS Omega, E-ISSN 2470-1343, Vol. 7, no 27, p. 23842-Article in journal (Refereed) Published
Abstract [en]

Improved methods to assess the degradation of coil coatings to approximate lifetime have been an area of academic and industrial interest for decades. This work aims to elucidate the differences in the degradation behavior of two coil coating systems: one standard commercial formulation and one formulation with a significant addition of biorenewable reactive diluents. Depth-resolved degradation behavior of samples exposed to accelerated and natural field weathering is assessed. Focal plane array attenuated total reflection-Fourier transform infrared spectroscopy was used to acquire high-resolution chemical data from a sloping cross section. The results agreed with conventional photoacoustic spectroscopy. Degradation profiles for the two coatings were significantly different, with the biobased samples showing a more durable behavior. This study provides a method for detailed assessment of coating degradation, giving a good estimation of its durability. This is both a way to compare the performance of coating systems and to improve the understanding of the impact of exposure conditions, paving the way for the development of more sustainable coil coatings.

Place, publisher, year, edition, pages
2022. Vol. 7, no 27, p. 23842-
Keywords [en]
FTIR focal plane array imaging, Coating degradation, Accelerated weathering, Field exposure, Biobased, Reactive diluent
National Category
Analytical Chemistry Polymer Technologies Materials Engineering Materials Chemistry
Identifiers
URN: urn:nbn:se:ri:diva-59757DOI: 10.1021/acsomega.2c02523OAI: oai:DiVA.org:ri-59757DiVA, id: diva2:1679474
Funder
Swedish Foundation for Strategic Research, FID18-0034
Note

This project is financially supported by the Swedish Foundation for Strategic Research (SSF).

Available from: 2022-07-01 Created: 2022-07-01 Last updated: 2023-07-06Bibliographically approved

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Wärnheim, AlexanderPersson, Dan

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