Understanding the influence of wood as a substrate on the permeability of coatings by NMR imaging and wet-cup

Gezici-Koç, Ö.; Erich, Sjf Sebastiaan; Huinink, H.P.; Ven, L.G.J. van der; Adan, O.C.G.

doi:10.1016/j.porgcoat.2017.10.013

Cited by 11 publications

(4 citation statements)

References 28 publications

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“…Wood is a porous and hygroscopic material, so its appearance and structural integrity can vary according to moisture content due to absorption and desorption of water, resulting in reduced durability and/or increased development of fungi, among other characteristics (Gezici-Koç et al 2018, Kluge et al 2017. That is why it is necessary to use coating materials, such as varnish, to extend the service life of wood as well as to enhance decorative aspects.…”

Section: Introductionmentioning

confidence: 99%

Preliminary evaluation of the incorporation of cellulose nanofibers as reinforcement in waterborne wood coatings

Naide

Cademartori

Nisgoski

et al. 2022

Maderas, Cienc. tecnol.

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The wood is exposed to possible damages caused by weather, requiring the application of a finishing coat to provide extra protection. The aim of this work was to evaluate the influence of the addition of microfibrillated cellulose in waterborne varnish on the colorimetric parameters, wettability and finish characteristics of wood products. Color was evaluated with a CM-5 spectrophotometer; surface wettability was analyzed by contact angle measurement using a drop shape analysis goniometer; and abrasion, adhesion and impact tests were performed to evaluate the quality of the coating. The coating's optical characteristics were not affected by the addition of microfibrillated cellulose. The changes in wood wettability were small, with no statistical difference between the wood treated with plain varnish and that with unbleached microfibrillated cellulose. In the analysis of the variation of the contact angle during the elapsed time, the coating containing unbleached microfibrillated cellulose presented the best results. The results of finish quality did not show numerical changes after the addition of the microfibrillated cellulose, but qualitatively the microfibrillated cellulose caused better anchoring of the coating to the specimens. Therefore, the use of microfibrillated cellulose as reinforcement in coatings has potential, but tests with different consistencies and tests of other properties are necessary.

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Section: Introductionmentioning

confidence: 99%

Preliminary evaluation of the incorporation of cellulose nanofibers as reinforcement in waterborne wood coatings

Naide

Cademartori

Nisgoski

et al. 2022

Maderas, Cienc. tecnol.

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“…Recently, Nuclear Magnetic Resonance (NMR) technique was used for wooden material (Almeida et al, 2008;Hernández and Cáceres, 2010;Fourmentin et al, 2016;Gezici-Koç et al, 2018;Zhou et al, 2018;Rostom et al, 2019). For example, Almeida et al (2008) studied the water restitution of initially saturated Douglas wood when subjected to dried conditions.…”

Section: Introductionmentioning

confidence: 99%

NMR and XRD quantification of bound and free water interaction of spruce wood fibers

Hachem

Abahri

Leclerc

et al. 2020

Construction and Building Materials

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The quantification of the bound and free water within spruce wood and the water and solid matrix interactions are still unknown by the researchers.Many specimens were firstly studied by Nuclear Magnetic Resonance function of the relative humidity. For each test, the bound and free water were calculated. After that, spruce wood specimens were studied by X-Ray Diffraction, function of the relative humidity. For each test, the crystalline and amorphous phases were quantified. This paper presents innovative results concerning the bound and free water uptake within wooden materials, and the water and wooden solid matrix interactions.

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“…Polimery i kopolimery akrylowe są szeroko wykorzystywane w przemyśle jako farby, lakiery, powłoki, środki adhezyjne, spoiwa oraz masy szpachlowe [1][2][3]. Żywice akrylowe są używane również w medycynie jako wypełnienia stomatologiczne i cementy kostne [4][5][6].…”

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Characteristics of photocurable acrylic resins for use to wood industry

et al. 2019

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Fotoutwardzalne polimery na bazie żywic akrylowych stanowią szeroką grupę materiałów o złożonej budowie chemicznej. Z zastosowaniem spektroskopii w podczerwieni (IR) schara kteryzowano żywice pochodzące od trzech czołowych producentów materiałów polimerowych stosowanych w przemyśle drzewnym: AkzoNobel, Klumpp oraz KnehoLacke. W otrzymanych widmach stwierdzono obecność pasm charakterystycznych zarówno dla struktury akrylanów, jak i epoksydów. Analiza mikrostruktury pozwoliła na stwierdzenie obecności w strukturze badanych żywic znacznej ilości napełniaczy. Wykazano, że żywica firmy AkzoNobel, charakteryzująca się najmniejszą lepkością, stabilnością termiczną oraz najsłabszymi właściwościami adhezyjnymi i twardością, zawiera najwięcej cząstek napełniaczy. Natomiast żywica firmy Klumpp wykazywała najmniejszą podatność na zmienne warunki sieciowania, co przejawiało się jej najlepszymi właściwościami adhezyjnymi. Stwierdzono też, że na właściwości termiczne i mechaniczne żywic w większym stopniu wpływa budowa chemiczna niż ilość zastosowanych napełniaczy.

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Understanding the influence of wood as a substrate on the permeability of coatings by NMR imaging and wet-cup

Cited by 11 publications

References 28 publications

Preliminary evaluation of the incorporation of cellulose nanofibers as reinforcement in waterborne wood coatings

Preliminary evaluation of the incorporation of cellulose nanofibers as reinforcement in waterborne wood coatings

NMR and XRD quantification of bound and free water interaction of spruce wood fibers

Characteristics of photocurable acrylic resins for use to wood industry

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