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Mechanical, Morphological and Thermal Properties of Nano-boron Nitride Treated Wood Materials
Bartin University, Faculty of Forestry, Department of Forest Industrial Engineering, 74100, Bartin.
Bartin University, Faculty of Forestry, Department of Forest Industrial Engineering, 74100, Bartin.
Bartin University, Faculty of Forestry, Department of Forest Industrial Engineering, 74100, Bartin.
Bartin University, Faculty of Forestry, Department of Forest Industrial Engineering, 74100, Bartin.
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Number of Authors: 7
2016 (English)In: MADERAS: Ciencia y Tecnología, ISSN 0717-3644, E-ISSN 0718-221X, Vol. 18, no 1, 19-32 p.Article in journal (Refereed) Published
Abstract [en]

Thermal instability is the one of the most important disadvantages of wood since it begins to decompose at a low temperature (˃110 °C). Many scientists, past and present, have conducted studies aimed at improving the thermal stability of wood. The aim of this study was to impregnate wood with nano-sized boron nitride (NBN) to improve its thermal stability and to investigate the changes in the properties of Scots pine, Ash and Iroco woods after the impregnation. The effects of the impregnation with NBN also were investigated on the heat-treated woods. The impregnation was conducted with using empty-cell method (the Rueping method) in a chamber under a pressure of 6 bars for 1 hr. Densities at 0% and 12% moisture content (MC), mechanical properties, color changes, thermal stability, and scanning electron microscopy (SEM/EDX) analysis were determined. The test results showed that the impregnation of wood with NBN increased generally the flexural strength and elasticity of modulus at bending, but the NBN impregnation decreased generally the compression strength except for ACI, ATWI, IC, and ICI. It was also determined that the changes in density and color were statistically different after the impregnation. According to the SEM/EDX results, deposits of nano-sized boron nitride were found inside the cell wall and on the pits. But the deposits were also determined in inside structure of the wood with EDX analysis. Thermal stability in T10% and T50% of wood was found to improve after the impregnation with NBN. TG/DTG and DTA values for some samples were found to fluctuate due to the heterogeneous dispersion of the NBN in the wood.

Place, publisher, year, edition, pages
2016. Vol. 18, no 1, 19-32 p.
National Category
Other Mechanical Engineering
Research subject
Wood Science and Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-9865DOI: 10.4067/S0718-221X2016005000003Scopus ID: 2-s2.0-84994108045Local ID: 89123d32-90be-4e66-8e2b-742177ccfb84OAI: oai:DiVA.org:ltu-9865DiVA: diva2:982803
Note

Validerad; 2016; Nivå 2; 20151022 (aliwan)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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