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Publication Date:
February 2010
ISSN:
1437-434X
DOI:
10.1515/hf.2010.059

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Holzforschung

International Journal of the Biology, Chemistry, Physics, and Technology of Wood

Editor-in-Chief: Faix, Oskar

Editorial Board Member: Daniel, Geoffrey / Militz, Holger / Rosenau, Thomas / Salmen, Lennart / Sixta, Herbert / Vuorinen, Tapani / Argyropoulos, Dimitris S. / Balakshin, Yu / Barnett, J. R. / Berry, Richard / Burgert, Ingo / Evans, Robert / Evtuguin, Dmitry V. / Frazier, Charles E. / Fukushima, Kazuhiko / Gellerstedt, Göran / Gindl-Altmutter, Wolfgang / Glasser, W. G. / Heitner, Cyril / Holmbom, Bjarne / Isogai, Akira / Kadla, John F. / Kleen, Marjatta / Koch, Gerald / Lachenal, Dominique / Mansfield, Shawn D. / Morrell, J.J. / Niemz, Peter / Pizzi, Antonio / Ragauskas, Arthur J. / Ralph, John / Rice, Robert W. / Salin, Jarl-Gunnar / Schmitt, Uwe / Schultz, Tor P. / Schwanninger, Manfred / Sipilä, Jussi / Tamminen, Tarja / Viikari, Liisa / Welling, Johannes / Willför, Stefan / Yoshihara, Hiroshi

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Analysis of the water vapour sorption behaviour of Sitka spruce [Picea sitchensis (Bongard) Carr.] based on the parallel exponential kinetics model

Callum A.S. Hill1 / Andrew Norton2 / Gary Newman3

1Centre for Timber Engineering, Edinburgh Napier University, Edinburgh, UK

2Renuables, Llanllechid, Gwynedd, UK

3Plant Fibre Technology Ltd., Bangor, Gwynedd, UK

Corresponding author. Centre for Timber Engineering, Joint Research Institute in Civil Engineering, School of Engineering and the Built Environment, Merchiston Campus, Napier University, Edinburgh, UK Phone: +44-131-455-2336

Citation Information: Holzforschung. Volume 64, Issue 4, Pages 469–473, ISSN (Online) 1437-434X, ISSN (Print) 0018-3830, DOI: 10.1515/hf.2010.059, February 2010

Publication History:
Received:
2009-11-13
Accepted:
2010-01-08
Published Online:
2010-02-17

Abstract

The water vapour sorption behaviour of Sitka spruce was analysed based on the parallel exponential kinetics (PEK) model. The PEK model deconvolutes the sorption kinetics curve into two exponential kinetics processes (fast and slow) which have characteristic times and moisture contents associated with them. The sorption kinetics was examined at different temperatures enabling the determination of activation energies for the sorption kinetic processes throughout the hygroscopic range (from 5% to 95% relative humidities). The physical interpretation of the PEK model is also discussed.

Keywords: activation energy; kinetics; Sitka spruce; water vapour sorption

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