Thermogravimetric analysis for wood decay characterisation
The paper focuses on the use of thermogravimetric analysis (TGA) as a fast method for estimating the change of lignocellulosic materials during fungal degradation in laboratory trials. Traditionally, evaluations of durability tests are based on mass loss. However, to gain more knowledge of the reasons for differences in durability and strength between wooden materials, information on the chemical changes is needed. Pinus sylvestris sapwood was incubated with the brown rot fungus Gloeophyllum trabeum and the white rot fungus Trametes versicolor. The TGA approach used was found to be reproducible between laboratories. The TGA method did not prove useful for wood deteriorated by white rot, but the TGA showed to be a convenient tool for fast estimation of lignocellulosic components both in sound wood and wood decayed by brown rot.
KeywordsLignin Hemicellulose Trametes Versicolor Fungal Decay Gloeophyllum Trabeum
Thermogravimetrische Analyse zur Charakterisierung der Holzfäule
The authors gratefully acknowledge the financial support of WoodWisdom-Net (www.woodwisdom.net), the wood industry partnership Building with Wood, and The Research Council of Norway for funding the research work within project “WoodExter”. This work forms part of that project. Also, thanks to Monica Fongen and Eva Grodås, Norwegian Forest and Landscape Institute, and to Thomas Koch, Vienna University of Technology for their work on the TGA.
- Beall FC (1969) Thermogravimetric analysis of wood lignin and hemicelluloses. Wood Fiber Sci 1(3):215–226 Google Scholar
- Crawford RL (1981) Lignin biodegradation and transformation. Wiley, New York Google Scholar
- EN 113 (1996) Wood preservatives—Test method for determining the protective effectiveness against wood destroying basidiomycetes—Determination of toxic values. Brussels, Belgium, European Committee for Standardization (CEN) Google Scholar
- Tappi Standard (2000) T 249. Cm-00, Carbohydrate composition of extractive-free wood and wood pulp by gas-liquid chromatography Google Scholar
- Tappi Standard (1998) T 204. Cm-07, Solvent extractives of wood and pulp Google Scholar
- Tappi Standard (1983) T 222. Cm-00, Acid in-soluble lignin in wood and pulp Google Scholar
- Zabel RA, Morrell JJ (1992) Wood microbiology—decay and its prevention. Academic Press, San Diego, 476 pp Google Scholar