Sorption and thermodynamic properties of wood of Pinus canariensis C. Sm. ex DC. buried in volcanic ash during eruption

Simón García, Cristina; García Esteban, Luis; Palacios de Palacios, Paloma de; Garcia Fernandez, Francisco; García Iruela, Alberto; Martín-Sanpedro, Raquel y Eugenio, María Eugenia (2017). Sorption and thermodynamic properties of wood of Pinus canariensis C. Sm. ex DC. buried in volcanic ash during eruption. "Wood Science And Technology", v. 51 (n. 3); pp. 517-534. ISSN 0043-7719. https://doi.org/10.1007/s00226-016-0884-3.

Descripción

Título: Sorption and thermodynamic properties of wood of Pinus canariensis C. Sm. ex DC. buried in volcanic ash during eruption
Autor/es:
  • Simón García, Cristina
  • García Esteban, Luis
  • Palacios de Palacios, Paloma de
  • Garcia Fernandez, Francisco
  • García Iruela, Alberto
  • Martín-Sanpedro, Raquel
  • Eugenio, María Eugenia
Tipo de Documento: Artículo
Título de Revista/Publicación: Wood Science And Technology
Fecha: 2017
Volumen: 51
Materias:
Palabras Clave Informales: Equilibrium Moisture Content; Crystallinity Index; Isosteric Heat; Juvenile Wood; Mature Wood
Escuela: E.T.S.I. Montes, Forestal y del Medio Natural (UPM)
Departamento: Sistemas y Recursos Naturales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The hygroscopicity and thermodynamic properties of Pinus canariensis wood buried in volcanic ash, dating from 1100 BC, were studied and compared with recently felled juvenile and mature wood of the same species. The sorption isotherms were obtained by the saturated salt method at 35 and 50 C. The isotherms were fitted using the Guggenheim–Anderson–de Boer model. The thermodynamic parameters were determined following the Clausius–Clapeyron integration method. To understand the behaviour of each type of wood, the chemical composition, infrared spectra and X-ray diffractograms were determined for each sample. The mature wood has a higher sugar content and lower extractive content than the juvenile and the buried wood. For both temperatures, the isotherm of the mature wood is above the isotherm of the juvenile wood and this, in turn, is above the isotherm of the buried wood, primarily influenced by the higher cellulose and hemicellulose contents and lower extractives content in the mature wood, resulting in a higher number of accessible –OH groups. Degradation of the buried wood due to high temperatures explains why its isotherms are below the isotherms of the recent wood. The energy involved in the desorption process is greater than in adsorption. Similarly, more energy is involved in the mature wood than in the juvenile wood, and the energy involved in the juvenile wood is greater than in the buried wood.

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
Gobierno de EspañaGL2009-12801Sin especificarSin especificarSpanish National Plan for Scientific Research

Más información

ID de Registro: 53471
Identificador DC: http://oa.upm.es/53471/
Identificador OAI: oai:oa.upm.es:53471
Identificador DOI: 10.1007/s00226-016-0884-3
URL Oficial: https://link.springer.com/article/10.1007/s00226-016-0884-3
Depositado por: Memoria Investigacion
Depositado el: 11 Ene 2019 10:03
Ultima Modificación: 11 Ene 2019 10:03
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