Durability of thermally modified<i>Pinus banksiana</i>(Jack pine) wood against brown and white rot fungi

Lekounougou, S.; Kocaefe, Duygu

doi:10.1179/2042645313y.0000000057

Cited by 10 publications

(7 citation statements)

References 46 publications

(73 reference statements)

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“…The effects of heat treatment on the dimensional stability, moisture sorption, and other wood properties have been extensively reviewed [11••, 48, 100]. Heat treatment, at temperatures ranging from 160 to 220°C in different shield gases, causes the hemicelluloses and lignin to degrade [96,97]. Consequently, this process leads to an increased dimensional stability and decay resistance [96][97][98][99]101].…”

Section: Heat Treatmentmentioning

confidence: 99%

Dimensional Stabilization of Wood

Kocaefe

2015

Curr Forestry Rep

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This paper comprehensively reviews the relevant literature and presents the methods and processes used to investigate the dimensional stabilization of wood using various modification techniques, including (a) hydrophobization of wood surfaces to block the entrance and exit of water; (b) impregnation treatment with bulking agents, such as resin and wax, to maintain wood in a swollen state and diminish dimensional changes caused by moisture; (c) chemical treatment with different chemical agents to reduce the hygroscopicity of the wood; and (d) high temperature heat treatment, which modifies wood components, reducing accessible hydroxyl groups and decreasing the possibility of water absorption. The results of dimensionally stabilizing wood via different treatments are interpreted and compared, and the effects of treating conditions and parameters on the dimensional changes of wood are analyzed.

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Section: Heat Treatmentmentioning

confidence: 99%

Dimensional Stabilization of Wood

Kocaefe

2015

Curr Forestry Rep

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“…This thermal process is related to an increase in the dimensional stability of wood (KASEMSIRI et al, 2012;LEKOUNOUGOU;KOCAEFE, 2014). Besides, changes produced in the chemical structure of lignin, cellulose and hemicellulose caused by temperature, prevents reabsorption of water molecules linked together or with wood polymers improving the dimensional stability of the material (PRIADI; HIZIROGLU, 2013).…”

Section: Analysis Of Ftir Spectra On the Surface Of Woodmentioning

confidence: 99%

Effects on density, shrinking, color changing and chemical surface analysis through FTIR of Tectona grandis thermo-treated

Méndez-Mejías¹,

Moya²

2016

Sci. For.

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“…Furthermore, the presence of moisture in the wood is necessary for the fungi to develop. Thus, as a result of the lowered values on the hygroscopicity index after thermal treatment, increased decay resistance has been observed in thermally treated wood [12]. C. puteana-originated mass loss significantly decreased in the densified and thermally post-treated samples at two different temperatures (185 and 212°C).…”

Section: Decay Resistancementioning

confidence: 95%

“…Thermal treatments affect chemical factors required for the growth of fungi such as nitrogen, vitamins, minor metals and mineral elements [10]. With thermal treatment, wood becomes more resistant to fungi due to chemical modifications of the wood components of cellulose, hemicellulose, and lignin [11][12][13]. On the other hand, thermal treatments reduce most of the mechanical strength properties of wood [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Resistance of mechanically densified and thermally post-treated pine sapwood to wood decay fungi

Pelit

Yalçın

2017

J Wood Sci

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This paper evaluated the density and biological resistance of pinewood samples modified with thermomechanical densification and thermal post-treatment. The samples were densified with 20 and 40% compression ratios at either 110 or 150°C. The thermal post-treatment was then applied to the pine samples at 185 and 212°C for 2 h. These samples were exposed to white-rot (Trametes versicolor) and brown-rot (Coniophora puteana) fungi for twelve weeks and the resulting mass loss was determined. In the densified samples, the effects of the compression ratio on T. versicolor-initiated mass loss and of the compression temperature on C. puteana-initiated mass loss were found to be significant. The mass loss was less in the samples compressed at 150°C with the 40% ratio, while the highest mass loss was observed in the undensified samples. In the thermally post-treated samples, the resistance to both decay fungi was significantly increased with the increase of the treatment temperature. The mass loss in the thermally post-treated samples at 212°C after T. versicolor and C. puteana fungi testing was reduced by 73 and 67%, respectively. However, the effect of the densification processes on decay resistance in the thermally post-treated samples was insignificant.

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Durability of thermally modifiedPinus banksiana(Jack pine) wood against brown and white rot fungi

Cited by 10 publications

References 46 publications

Dimensional Stabilization of Wood

Dimensional Stabilization of Wood

Effects on density, shrinking, color changing and chemical surface analysis through FTIR of Tectona grandis thermo-treated

Resistance of mechanically densified and thermally post-treated pine sapwood to wood decay fungi

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