Mid-infrared spectroscopy and dynamic mechanical analysis of heat-treated obeche (Triplochiton scleroxylon) wood

The chemical structure change and rheological behaviour of heat-treated Obeche (Triplochiton scleroxylon) wood were investigated. Wood samples were treated at 160 and 200°C for 30, 60 and 120 minutes. Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and dynamic mechanic...

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Autores principales: Fabiyi,James S, Ogunleye,Bolade M
Lenguaje:English
Publicado: Universidad del Bío-Bío 2015
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2015000100002
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spelling oai:scielo:S0718-221X20150001000022015-06-17Mid-infrared spectroscopy and dynamic mechanical analysis of heat-treated obeche (Triplochiton scleroxylon) woodFabiyi,James SOgunleye,Bolade M Heat-treated wood chemical structure rheological glass transition temperature infrared spectroscopy dynamic mechanical analysis The chemical structure change and rheological behaviour of heat-treated Obeche (Triplochiton scleroxylon) wood were investigated. Wood samples were treated at 160 and 200°C for 30, 60 and 120 minutes. Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and dynamic mechanical analysis (DMA) were employed to characterize the chemical structure and rheological property of the heat-treated wood, respectively. Infrared data showed that there was a reduction in the number of hydroxyl groups (one of the factors normally attributed to water absorption) of heat treated wood relative to the control samples. The relative cellulose crystallinity increased slightly which may be one of the factors contributing to the stiffness of the heat-treated wood. The latter increases with increasing treatment temperature and time. The rheological properties of the wood samples were tested while submerged in N-methyl-2-pyrrolidone solvent under saturated conditions. DMA results showed that the increasing heat treatment time caused an increase in the glass transition temperature relative to the control sample, irrespective of the treatment temperature. Therefore, heat treatment at moderately high temperatures (160 and 200°C) showed an interesting potential which could be used to reduce water absorption and improve flexural modulus of Obeche wood.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.17 n.1 20152015-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2015000100002en10.4067/S0718-221X2015005000001
institution Scielo Chile
collection Scielo Chile
language English
topic Heat-treated wood
chemical structure
rheological
glass transition temperature
infrared spectroscopy
dynamic mechanical analysis
spellingShingle Heat-treated wood
chemical structure
rheological
glass transition temperature
infrared spectroscopy
dynamic mechanical analysis
Fabiyi,James S
Ogunleye,Bolade M
Mid-infrared spectroscopy and dynamic mechanical analysis of heat-treated obeche (Triplochiton scleroxylon) wood
description The chemical structure change and rheological behaviour of heat-treated Obeche (Triplochiton scleroxylon) wood were investigated. Wood samples were treated at 160 and 200°C for 30, 60 and 120 minutes. Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and dynamic mechanical analysis (DMA) were employed to characterize the chemical structure and rheological property of the heat-treated wood, respectively. Infrared data showed that there was a reduction in the number of hydroxyl groups (one of the factors normally attributed to water absorption) of heat treated wood relative to the control samples. The relative cellulose crystallinity increased slightly which may be one of the factors contributing to the stiffness of the heat-treated wood. The latter increases with increasing treatment temperature and time. The rheological properties of the wood samples were tested while submerged in N-methyl-2-pyrrolidone solvent under saturated conditions. DMA results showed that the increasing heat treatment time caused an increase in the glass transition temperature relative to the control sample, irrespective of the treatment temperature. Therefore, heat treatment at moderately high temperatures (160 and 200°C) showed an interesting potential which could be used to reduce water absorption and improve flexural modulus of Obeche wood.
author Fabiyi,James S
Ogunleye,Bolade M
author_facet Fabiyi,James S
Ogunleye,Bolade M
author_sort Fabiyi,James S
title Mid-infrared spectroscopy and dynamic mechanical analysis of heat-treated obeche (Triplochiton scleroxylon) wood
title_short Mid-infrared spectroscopy and dynamic mechanical analysis of heat-treated obeche (Triplochiton scleroxylon) wood
title_full Mid-infrared spectroscopy and dynamic mechanical analysis of heat-treated obeche (Triplochiton scleroxylon) wood
title_fullStr Mid-infrared spectroscopy and dynamic mechanical analysis of heat-treated obeche (Triplochiton scleroxylon) wood
title_full_unstemmed Mid-infrared spectroscopy and dynamic mechanical analysis of heat-treated obeche (Triplochiton scleroxylon) wood
title_sort mid-infrared spectroscopy and dynamic mechanical analysis of heat-treated obeche (triplochiton scleroxylon) wood
publisher Universidad del Bío-Bío
publishDate 2015
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2015000100002
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AT ogunleyeboladem midinfraredspectroscopyanddynamicmechanicalanalysisofheattreatedobechetriplochitonscleroxylonwood
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