Physical, biological and chemical characterisation of wood treated with silver nanoparticles

Can, Ahmet; Palanti, Sabrina; Sivrikaya, Hüseyin; Hazer, Baki; Stefanı, Federico

doi:10.1007/s10570-019-02416-x

Cited by 38 publications

(16 citation statements)

References 29 publications

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Section: Ftir Analysismentioning

confidence: 99%

“…The changes in the FTIR spectrum of the wood following the action of brown-rot fungi, including C. puteana, which selectively decay carbohydrates and limit lignin degradation, have been described in the literature [34,[42][43][44][45][46][47]. The most important changes in the spectrum of wood exposure to C. puteana were observed in the fingerprint region, between 1800 and 600 cm −1 and were characterized on the basis of the literature data [13,33,[42][43][44][45][46][47]. The well defined bands in the FTIR spectra of the untreated and undecayed wood were observed at: 1735 cm −1 for unconjugated C=O from xylans in hemicellulose, 1600 cm −1 for aromatic skeletal and C=O stretch vibration in lignin, 1505 cm −1 for C=C aromatic skeletal vibration in lignin, 1370 cm −1 for C-H bond in cellulose and hemicellulose, 1321 cm −1 for C-O in syringyl and guaiacyl rings and O-H in plane bending in cellulose, 1262 cm −1 guaiacyl ring breathing, 1160 cm −1 for C-O-C vibration in cellulose and hemicellulose and 897 cm −1 for C-O stretch in cellulose and hemicellulose.…”

Section: Ftir Analysismentioning

confidence: 99%

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The Possibility of Propolis Extract Application in Wood Protection

Woźniak

Kwaśniewska-Sip

Waśkiewicz

et al. 2020

Forests

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Nowadays, there is a growing interest in extending the service life of wood and wood products by applying natural substances that are harmless to humans and the environment. In this paper, propolis was used as an eco-friendly wood preservative. The aim of this study was to determine the resistance of Scots pine wood treated with the propolis extract against brown-rot fungus Coniophora puteana. The wood biodegradation was assessed by gravimetric method, as well as by the analysis of ergosterol concentration in decayed wood and by the determination of changes in the wood structure by means of Fourier transform infrared spectroscopy. The results indicated that the impregnation of wood with propolis extract above 12% concentration limited fungal decay. The mass loss of wood treated with 18.9% propolis extract was 2.3% and was over 21 times lower than that for untreated wood. The analysis of ergosterol content and the changes in wood structure also confirmed that the propolis extract above 12% concentration protected wood against decay caused by C. puteana. Moreover, the propolis extract used in wood impregnation was rich in phenolic compounds, mainly chrysin, pinocembrin and galangin, which possess antimicrobial activity. The obtained results indicate that the extract of Polish propolis can be a promising natural wood preservative, safe for humans and the natural environment.

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Section: Ftir Analysismentioning

confidence: 99%

Section: Ftir Analysismentioning

confidence: 99%

The Possibility of Propolis Extract Application in Wood Protection

Woźniak

Kwaśniewska-Sip

Waśkiewicz

et al. 2020

Forests

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“…The FTIR analysis of the test and control samples was carried out in the range of 1800‐700 cm −1 . This peak range is known as the fingerprint region (700‐1800 cm −1 ) and includes the highest concentration of wood photodegradation under weathering conditions . These absorption peaks reflect changes in benzene rings, basic functional groups in lignin, and carbohydrates, and changes in the crystalline and amorphous content of cellulose (Figures and ).…”

Section: Resultsmentioning

confidence: 99%

Surface characterization of weathered and heat‐treated wood‐based composites reinforced by styrene maleic anhydride

Zor

Can

Gardner

2019

Color Research & Application

Self Cite

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The aim of this study was to investigate the effect of heat‐treated lignocellulosic filler on the surface characteristics and decay resistance of the wood flour/styrene maleic anhydride (SMA) composites. In this study, heat treatment was conducted at 212°C for 8 hours. Test specimens were prepared by injection molding at 220°C. Weathering tests were performed by cycles of UV‐light irradiation for 8 hours, water spray for 15 minutes, and then conditioning for 3.45 hours in an accelerated weathering test cycle chamber. Heat‐treated wood flour/SMA composites were evaluated for color changes, and attenuated total reflectance Fourier transform infrared (FTIR) spectroscopy was used to analyze chemical changes on the sample surfaces. The wood decay tests were performed of white rot fungus, Trametes versicolor (L.: Fr.) Pilat was based on mini‐block specimens on 48% malt extract agar in petri dishes. The study showed that color changes occurred when heat‐treated filler rate is increased in this material. Therefore, materials in 10% filler rate show lower color changes than other variation. As a result of the FTIR analysis, the addition of wood filler into the SMA causes changes in the chemical structure. In addition, the increase in wood filler reduced the resistance to weathering. Decay results showed that thermally modified wood has lower mass loss caused by fungal attack than untreated wood material. The weight loss decreases with the increase in wood flour rate expect 10%T and 10%UT in all composites.

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“…Among ecological products with potential application in wood protection, there are both synthesized chemical compounds and natural substances. Silver nanoparticles, ionic liquids or silicon compounds belong to chemical compounds with a low environmental impact and are described in the literature as potential and effective wood preservatives [ 3 , 4 , 5 , 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Bending Strength of Wood Treated with Propolis Extract and Silicon Compounds

et al. 2021

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The modification of wood and its treatment with various preservatives may affect its mechanical properties, hence the knowledge of the character changes in wood caused by impregnation is of great importance. Therefore, the aim of the research was to determine the effect of impregnation, with the propolis-silane preparation (EEP-MPTMOS/TEOS) consisting of the propolis extract (EEP) and silicon compounds: 3-(trimethoxysilyl)propyl methacrylate (MPTMOS) and tetraethoxysilane (TEOS), on the bending strength of treated wood. Moreover, in the study wood treated with components of the propolis-silane formulation was used, namely 70% ethanol, the propolis extract, and silanes (MPTMOS/TEOS). In order to determine whether the impregnation of wood affects its long-term bending, creep tests were performed depending on the humidity. The impregnation of wood with the propolis extract and the propolis-silane preparation (EEP-MPTMOS/TEOS) contributed to the increase in modulus of rapture and work to maximum load values compared to the untreated wood. In dry wood condition, the wood treated with EEP and EEP-MPTMOS/TEOS was characterized by lower modulus of elasticity values than the control samples. In turn, in wet wood condition, wood treated with the propolis-silane preparation showed an increase in the MOE value. Moreover, the impregnation of wood had an influence on the wood creep process under bending loads. The treated wood was characterized by higher relative creep compliance than the untreated wood. The exception was the wood impregnated with EEP-MPTMOS/TEOS, which showed comparable relative creep compliance to the control samples. The presented results indicate that wood treated with a bio-friendly preparation based on propolis and silicon compounds can be used in various application and also in variable humidity conditions.

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Physical, biological and chemical characterisation of wood treated with silver nanoparticles

Cited by 38 publications

References 29 publications

The Possibility of Propolis Extract Application in Wood Protection

The Possibility of Propolis Extract Application in Wood Protection

Surface characterization of weathered and heat‐treated wood‐based composites reinforced by styrene maleic anhydride

Bending Strength of Wood Treated with Propolis Extract and Silicon Compounds

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