Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Thermodynamic analysis of water vapour sorption behaviour of juvenile and mature wood of Abies alba Mill.
Year:2015
Research Areas
  • Characteristic of the materials
Information
Abstract
The hygroscopicity and thermodynamic properties of juvenile and mature wood of Abies alba Mill. were studied through the 15, 35 and 50 ºC sorption isotherms. The Guggenheim, Anderson and de Boer-Dent model was used to fit the isotherms. The thermodynamic parameters were obtained from the sorption isotherms by applying the integration method of the Clausius-Clapeyron equation. The chemical composition of both types of wood (extractives, lignin and carbohydrate polymer-cellulose and hemicellulose-content) was determined, and infrared spectroscopy and X-ray diffractograms were used to identify any chemical modifications and changes in the crystal structure of the cell wall. The mature wood has more cellulose and hemicellulose content and less extractives content than the juvenile wood. The shorter crystallite length in the mature wood creates a higher amount of amorphous zones and, as a consequence, a higher number of access areas to the -OH groups. The combination of these phenomena explains the different hygroscopic behaviour between the juvenile and the mature wood, as the latter has higher moisture content in the three isotherms. As regards the thermodynamic properties, the amount of energy involved in the sorption process is greater in the mature wood than in the juvenile wood.
International
Si
JCR
Si
Title
Journal of Materials Science
ISBN
0022-2461
Impact factor JCR
2,305
Impact info
Datos JCR del año 2013
Volume
50
10.1007/s10853-015-9283-7
Journal number
22
From page
7282
To page
7292
Month
SIN MES
Ranking
Participants
  • Autor: Cristina Simon Garcia (UPM)
  • Autor: Luis Garcia Esteban (UPM)
  • Autor: Paloma de Palacios De Palacios (UPM)
  • Autor: Francisco Garcia Fernandez (UPM)
  • Autor: Raquel Martín Sampedro (INIA)
  • Autor: María Eugenia Eugenio (INIA)
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)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)