Journal article
Chemical characterisation and durability assessment of torrefied radiata pine (Pinus radiata) wood chips
International Biodeterioration & Biodegradation, Vol.85, pp.347-353
2013
Abstract
Wood chips from New Zealand grown radiata pine were torrefied at 220, 260, and 300 degrees C with the aim of understanding the fundamentals behind the enhanced durability against major decay fungi. Chemical analysis methods, including high-resolution synchrotron-based X-ray diffraction, were used to ascertain the mode of chemical changes in wood after various torrefaction levels. Compositional analysis showed that the carbohydrates and lignin in 220 degrees C samples remained at about the same levels as in the control, with a noticeable drop in the relative ratio of carbohydrates levels and an increase in lignin levels at 260 degrees C, and a steep drop in carbohydrates and a sharp increase in lignin concentrations at 300 degrees C. Hemicelluloses were the most severely affected carbohydrate component, particularly with 300 degrees C treatment. Analysis with FTIR showed similar spectra for control and 220 degrees C treated chips, a broad shoulder around 1610 cm(-1) at 260 degrees C, and several changes at 300 degrees C involving carbonyl at 1705 cm(-1) and c=c and c-c absorptions. Synchrotron-based X-ray diffraction showed a slight contraction of peak d(200) for torrefied samples, which is related to increasing hydrophobic cellulose crystallinity. The information obtained suggests that the durability enhancement achieved against Oligoporus placenta and Trametes versicolor at 260 degrees C can be attributed mainly to depletion of hemicelluloses, and complete resistance at 300 degrees C is likely to be related to changes in all cell wall components, particularly hemicelluloses and lignin.
Details
- Title
- Chemical characterisation and durability assessment of torrefied radiata pine (Pinus radiata) wood chips
- Authors
- Tripti Singh (Corresponding Author) - ScionAdya P. Singh (Author) - ScionIbrar Hussain (Author) - ScionPeter Hall (Author) - Scion
- Publication details
- International Biodeterioration & Biodegradation, Vol.85, pp.347-353
- Publisher
- Elsevier Ltd
- DOI
- 10.1016/j.ibiod.2013.07.014
- ISSN
- 1879-0208
- Organisation Unit
- National Centre for Timber Durability and Design Life
- Language
- English
- Record Identifier
- 99979640702621
- Output Type
- Journal article
Metrics
3 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Web Of Science research areas
- Biotechnology & Applied Microbiology
- Environmental Sciences
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites