Effects of fungal exposure on air and liquid permeability of nanosilver- and nanozincoxide-impregnated Paulownia wood

Taghiyari, Hamid Reza; Kalantari, Amin; Ghorbani, Maryam; Bavaneghi, Fatemeh; Akhtari, Maliheh

doi:10.1016/j.ibiod.2015.08.014

Cited by 19 publications

(15 citation statements)

References 15 publications

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“…The color (ΔE) and luminance (ΔL) tests showed that for the treatments chosen, no remarkable differences compared to the untreated control were observed (Figure 11). In another study, the effects of some aqueous dispersions of silver or zinc nanoparticles (AgNPs, ZnNPs) to air and liquid permeability of Paulownia wood samples exposed to Trametes versicolor were assessed [83]. The wood samples were heat treated at 100 and 150°C, after which they were exposed to T. versicolor.…”

Section: Microbial Degradation Of Woodmentioning

confidence: 99%

“…with ZnNps or AgNps which significantly inhibited the growth of the microorganism, reducing the mass loss of impregnated wood samples subjected to fungal attack [83]. [85].…”

Section: Microbial Degradation Of Woodmentioning

confidence: 99%

“…Specific air permeability in wood samples treated with ZnNps and/or AgNps nanomaterials after exposure to action of rot-white fungus Trametes versicolor[83].…”

mentioning

confidence: 99%

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Polymeric Micro- and Nanosystems for Wood Artifacts Preservation

Ion¹,

Grigorescu²,

Iancu³

et al. 2018

New Uses of Micro and Nanomaterials

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The complex methods of diagnosis investigation of the wood artifacts state and proper materials for their protection against decay are very important goals in cultural heritage. This chapter focuses on the recent trends in micro-and nanostructured polymer systems for application in cultural heritage and on wood preservation, especially. The synthesis, properties, and applications, as well as the relevant analysis techniques to reveal the structures and properties of polymer systems, are discussed, too. To overcome the specific problems that exist for wood artifacts, some aspects should be treated: effects of the environmental factors, as moisture and pollutant absorption into the wood fibers, over-exposure effect of sun or artificial light sources, biological attack of different microorganisms, and the effects of the protective and decorative coatings.

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Section: Microbial Degradation Of Woodmentioning

confidence: 99%

“…with ZnNps or AgNps which significantly inhibited the growth of the microorganism, reducing the mass loss of impregnated wood samples subjected to fungal attack [83]. [85].…”

Section: Microbial Degradation Of Woodmentioning

confidence: 99%

See 1 more Smart Citation

Polymeric Micro- and Nanosystems for Wood Artifacts Preservation

Ion¹,

Grigorescu²,

Iancu³

et al. 2018

New Uses of Micro and Nanomaterials

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“…A better knowledge of its chemical composition (Rencoret et al 2009), anatomical structure (Popović and Radošević 2010;Liu et al 2013a;Meier 2015), and physical, mechanical, and technological properties (Chen and James 1999;Ates et al 2008;Kaygin et al 2009;Akyildiz and Kolsahin 2010;Kaymakci et al 2011;Kaymakci et al 2013;Majid 2013;Akyildiz 2014;Kaygin et al 2015) are key points for its rational and diverse utilization (Hulya et al 2005;Mitsui and Tolvaj 2005;Ayrilmis and Kaymakci 2013;Kaymakci and Ayrilmis 2014;Kaygin et al 2015;Tari et al 2015) and appropriate mechanical or chemical processing (Sun et al 2011;Ayrilmis and Kaymakci 2013;Yorgun and Yıldız 2015a,b). Improving Paulownia's natural durability and impregnability is also an interesting recent research topic (Candan and Korkut 2013;Boeva et al 2015;Hamid et al 2015). Additionally, as a fast growing wood species, Paulownia is a candidate for bioenergy production (Lopez et al 2012;Yadav et al 2013;Yavorov et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Effects of Ageing on the Color and Surface Chemistry of Paulownia Wood (P. elongata) from Fast Growing Crops

Liu¹,

Timar²,

Varodi³

et al. 2016

BioResources

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The behavior of paulownia wood (Paulownia elongata) was investigated using three different ageing tests: simulated natural ageing under the influence of light under indoor conditions, temperature-induced ageing in the dark, and UV-induced ageing. Ageing effects were evaluated by color measurements in the CIE Lab system. Simulated natural ageing of wood in indoor conditions (6 months) and UV-accelerated ageing (72 h) are complex and dynamic processes, which resulted mostly in yellowing of the samples due to photo-degradation. Temperature-induced ageing (288 h at 100 C) resulted mostly in a rapid and visible darkening of the paulownia wood. Comparative in-time evolution of color changes during accelerated UV ageing testing and simulated natural ageing testing under indoor conditions allowed the estimation of an acceleration index of about 50X. Fourier transform infrared spectroscopy (FTIR) was used to examine specific chemistry changes occurring during these ageing tests. UV light from natural or artificial sources caused primarily lignin degradation followed by oxidative processes leading to carbonylcontaining chromophores. Temperature-induced partial degradation of hemicelluloses and oxidative processes resulted in the formation of chromophores containing mostly conjugated carbonyl groups. This research highlighted that paulownia wood (P. elongata) is quite sensitive to ageing under the action of light and temperature, which cause notable color and surface chemistry changes.

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“…The whole system was airtight. Pressure difference (∆P) was monitored in milli-bar precision [20]. An electronic time measurement device was connected to the apparatus to determine the time with milli-second precision.…”

Section: Introductionmentioning

confidence: 99%

Fluid Flow in Cotton Textile: Effects of Wollastonite Nanosuspension and Aspergillus Niger Fungus

et al. 2019

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Aspergillus niger is a common contaminant in food industry, laboratories, and also a potential threat to biological works of art in museums. Cotton textiles have frequently been used in museums for canvas paintings. In the present project, the effect of Aspergillus niger on fluid flow rate of nanowollastonite-impregnated cotton textile specimens was investigated. Cotton specimens were impregnated with nanowollastonite (NW) suspension at four concentrations of 10%, 20%, 30%, and 40% to be further compared with control specimens. Results showed that fluid flow in cotton textile was as high as 361.3 cm3·s−1 due to its high porous structure and very low compactness of fibers (low density). Impregnation with NW did not have a significant effect on fluid flow in cotton textile. Exposure to Aspergillus niger increased fluid flow in control specimens as a result of deterioration of cotton fibers. Exposure of NW-impregnated specimens at concentrations more than 20% to Aspergillus niger did not have any significant effect on fluid flow. In control specimens, fungus mycelium penetrated deep into the texture of textile. However, in NW-impregnated specimens, the fungus could not penetrate into the texture and deteriorate the specimens. It was concluded that NW can be recommended for textile industry and also works of art as they protect cotton textiles against Aspergillus niger while, do not diminishi its dying and paintability properties.

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Effects of fungal exposure on air and liquid permeability of nanosilver- and nanozincoxide-impregnated Paulownia wood

Cited by 19 publications

References 15 publications

Polymeric Micro- and Nanosystems for Wood Artifacts Preservation

Polymeric Micro- and Nanosystems for Wood Artifacts Preservation

Effects of Ageing on the Color and Surface Chemistry of Paulownia Wood (P. elongata) from Fast Growing Crops

Fluid Flow in Cotton Textile: Effects of Wollastonite Nanosuspension and Aspergillus Niger Fungus

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