Sustainable wood coatings made of epoxidized vegetable oils for ultraviolet protection

Varganici, Cristian–Dragos; Roşu, Liliana; Roşu, Dan; Mustaţă, Fanica; Rusu, Teodora

doi:10.1007/s10311-020-01067-w

Cited by 32 publications

(20 citation statements)

References 168 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is important to reiterate that coatings are not intended to protect wood from decay fungi. Coatings are primarily used to protect wood from water, UV-light, blue-stain, and mold degradation (Varganici et al 2020). Coating C's excellent performance in this test was likely because of the biocides present in its composition.…”

Section: Weight Loss By Decay Fungimentioning

confidence: 99%

Effect of exterior wood coatings on the durability of cross-laminated timber against mold and decay fungi

Bobadilha

Stokes

Kirker

et al. 2020

BioRes

View full text Add to dashboard Cite

Cross-laminated timber (CLT) is increasingly used in building construction worldwide. Durability of CLT against fungal attack has yet to be fully explored. Water intrusion in mass timber can yield dimensional changes and microbial growth. This study evaluated the performance of CLT coated with various water- and solvent-based stains commercially available in the United States. Twelve coatings were tested for moisture excluding effectiveness, water repellency effectiveness, volumetric swelling, and anti-swelling efficiency. Only five coatings repelled water, limiting dimensional changes. A modified version of AWPA E10-16 (2016) was performed to evaluate decay of the coated CLT samples. Weight losses were recorded after 18 weeks’ exposure to the brown-rot decay fungus Gloeophyllum trabeum. In accelerated mold testing, coated CLT samples were grown in chambers containing spores of Aspergillus sp., Rhizopus sp., and Penicillium sp. for 29 d and assessed visually for mold growth. In both tests, coating C (transparent, water-based, alkyd/acrylic resin) performed the best among the tested coatings. Mold growth was completely prevented, and weight loss caused by G. trabeum was approximately 1.33%. Although coating C prevented decay for 18 weeks, coatings are not intended to protect against decay fungi. However, they may offer short-term protection during transport, storage, and construction.

show abstract

Section: Weight Loss By Decay Fungimentioning

confidence: 99%

Effect of exterior wood coatings on the durability of cross-laminated timber against mold and decay fungi

Bobadilha

Stokes

Kirker

et al. 2020

BioRes

View full text Add to dashboard Cite

show abstract

“…Lignin produces carbonyl groups when it exposes to singlet oxygen under the UV lights. The new carbonyl derivatives enable the absorbance of moisture that can decrease the resistance of wood against environmental effects (Varganici et al 2021, Evans et al 1996, Catto et al 2016.…”

Section: Colour Testmentioning

confidence: 99%

Some surface characteristics of oriental beech wood impregnated with some fire-retardants and coated wıth polyurea/polyurethane hybrid and epoxy resins

Altay

Toker

Baysal

et al. 2021

Maderas, Cienc. tecnol.

View full text Add to dashboard Cite

This study was made to determine surface characteristics such as colour, gloss, and surface hardness changes of Oriental beech (Fagus orientalis). The wood specimens were firstly impregnated with some fireretardants (FRs) and primed with epoxy resin (EPR) and then coated with polyurethane/polyurea hybrid resin (PUU). Oriental beech was impregnated with 3 % aqueous solution of boric acid (BA), borax (BX), boric acid and borax mixture (1:1), and ammonium sulphate (AS). While Sikafloor®-156 was used for epoxy coating (EPR), Sikalastic®-851 R was used for polyurethane/polyurea hybrid coating (PUU). According to our results, all treatment groups gave negative lightness stability values after accelerated weathering. The colour stability of epoxy resin coated Oriental beech was higher than that of polyurethane/polyurea hybrid resin coated Oriental beech. Except for boric acid impregnated and polyurethane/polyurea hybrid resin coated Oriental beech, all fire-retardants treatment before polyurethane/polyurea hybrid resin and epoxy resin coatings decreased the gloss losses of Oriental beech after accelerated weathering. Fire-retardants impregnation before epoxy resin and polyurethane/polyurea hybrid resin coatings improved the surface hardness values of Oriental beech after accelerated weathering.

show abstract

“…However, due to the presence of a large number of hydroxyl groups in its chemical structure, wood is susceptible to atmospheric influences, under the impact of which there is a change in its size and decrease in performance, a significant reduction in the service life of products, and biological decomposition [3][4][5][6]. Increase in dimensional stability, strength, hydrophobic properties and resistance to biological degradation of wood can be achieved by reducing its hygroscopicity using many modification methods, such as steam thermal treatment [7][8][9], cell wall modification with methyltrimetosiloxane [10,11], modification using styrene [12] and phenol-containing resins [13,14], modification using boron and compatibilizers [15], high-density polyethylene [16] and siloxanes [17], modification using 1,3-dimethylol-4,5-dihydroxyethylene urea [18], thermal processing [19], modification using waxes, paraffins [20,21], vegetable oils [22,23], etc. However, these methods have their disadvantages: heat treatment can reduce the strength properties of wood [24,25], and chemical modification is characterized by the complexity of the process and high energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Impregnation of Wood with Waste Engine Oil to Increase Water- and Bio-Resistance

Belchinskaya

Жужукин

Ishchenko

et al. 2021

Forests

View full text Add to dashboard Cite

Impregnation is a common method of protecting wood from external influences. This study proposes the use of spent engine oil as an impregnating composition for modifying birch wood to make it resistant to biological degradation and water. The indicators of water resistance and dimensional stability of wood such as wetting contact angle, thermogravimetric analysis, Fourier transform infrared spectroscopy (FTIR), and biodegradation tests have been determined. It has been found that treatment with spent engine oil significantly increases the dimensional stability (56.8% and 45.7% in tangential and radial directions) and water-resistant indicators of wood. Thermogravimetric analysis has showed that the curves for the impregnated specimens were different from the control group and had two sharp peaks at 302 and 357 °C. However, FTIR indicated that no clear chemical reactions occur between spent engine oil and wood. A study on wood resistance to biological degradation has showed a significant increase in resistance against brown rot (Poria placenta fungi) in the treated specimens, in contrast to the control group. Thus, impregnation of wood with spent engine oil makes it possible to increase wood resistance to water and biological degradation.

show abstract

Sustainable wood coatings made of epoxidized vegetable oils for ultraviolet protection

Cited by 32 publications

References 168 publications

Effect of exterior wood coatings on the durability of cross-laminated timber against mold and decay fungi

Effect of exterior wood coatings on the durability of cross-laminated timber against mold and decay fungi

Some surface characteristics of oriental beech wood impregnated with some fire-retardants and coated wıth polyurea/polyurethane hybrid and epoxy resins

Impregnation of Wood with Waste Engine Oil to Increase Water- and Bio-Resistance

Contact Info

Product

Resources

About