Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Sorption and thermodynamic properties of Terminalia superba Engl. & Diels and Triplochiton scleroxylon K. Schum. through the 15oC, 35oC and 50oC sorption isotherms
Year:2014
Research Areas
  • Engineering,
  • Characteristic of the materials
Information
Abstract
The hygroscopicity and thermodynamic properties of Terminalia superba Engl. & Diels (limba) and Triplochiton scleroxylon K. Schum. (obeche) wood were studied and the species were compared. The 15oC, 35oC and 50oC isotherms were plotted by applying the saturated salts method and fitted using the GAB model. The thermodynamic parameters were obtained from the isotherms through the integration method of the Clausius-Clapeyron equation. Infrared spectra were used to study possible chemical modifications in the cell wall, and X-ray diffractograms were used to analyse the crystal structure of the cell wall. Obeche had shorter crystallite length and a lower crystallinity index, giving rise to a higher number of amorphous zones and thus a higher number of sorption sites in the monolayer. As a result, the saturation moisture content in the monolayer (Xm) is greater in obeche than in limba. In terms of the thermodynamic properties, in both species the net isosteric heat of sorption decreases as the equilibrium moisture content (EMC) increases, and more energy is required in desorption than in adsorption.
International
Si
JCR
Si
Title
European Journal of Wood And Wood Products
ISBN
0018-3768
Impact factor JCR
1,105
Impact info
Volume
72
10.1007/s00107-013-0752-x
Journal number
1
From page
99
To page
106
Month
SIN MES
Ranking
Materials Science, Paper & Wood 6/21
Participants
  • Autor: Francisco Garcia Fernandez (UPM)
  • Autor: Luis Garcia Esteban (UPM)
  • Autor: Paloma de Palacios De Palacios (UPM)
  • Autor: Cristina Simon Garcia (UPM)
  • Autor: Alberto García Iruela (UPM)
  • Autor: Javier de la Fuente (UVA)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Tecnología de la Madera y el Corcho
  • Departamento: Sistemas y Recursos Naturales
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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