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European Journal of Wood and Wood Products

Erschienen in:

18.10.2015 | Original

Inhibition of leaching of water soluble extractives of Pterocarpus marsupium by heat treatment

verfasst von: Krishna K. Pandey, S. Vinoth Kumar, Kavyashree Srinivas

Erschienen in: European Journal of Wood and Wood Products | Ausgabe 2/2016

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Abstract

Pterocarpus marsupium is widely used for constructions, doors, shutters, floorings and furniture. It has good mechanical properties and high natural durability. However, presence of water soluble extractives in P. marsupium restricts its use for certain applications. In this study efficacy of heat treatment of P. marsupium for inhibition of leaching of its water soluble extractives has been investigated. Pterocarpus marsupium specimens were heat-treated under vacuum for different times in the temperature range of 190–220 °C. Effect of the treatment temperature and heating time on color changes and mass loss was studied. Heat-treated wood attained uniformly darker colour. Heat-treated wood specimens were soaked in water and leaching of extractives was quantified by UV–visible absorption spectroscopy. Extractive leaching was significantly reduced in heat-treated wood. Thermal modification of wood was found to be very effective in inhibiting leaching of water soluble extractives of P. marsupium. A moderate mass loss of about 2–4 % occurred for optimum treatment conditions.

Vorheriger Artikel Moisture behavior and structural changes of plywood during outdoor exposure

Nächster Artikel Impact of extractive chemical compounds from durable wood species on fungal decay after impregnation of nondurable wood species

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Titel: Inhibition of leaching of water soluble extractives of Pterocarpus marsupium by heat treatment
verfasst von: Krishna K. Pandey
S. Vinoth Kumar
Kavyashree Srinivas
Publikationsdatum: 18.10.2015
Verlag: Springer Berlin Heidelberg
Erschienen in: European Journal of Wood and Wood Products / Ausgabe 2/2016
Print ISSN: 0018-3768
Elektronische ISSN: 1436-736X
DOI: https://doi.org/10.1007/s00107-015-0964-3

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