Journal article
Effects of thermal modification on physical and mechanical properties of douglas-fir heartwood
BioResources, Vol.9(4), pp.7152-7161
2014
Abstract
The flexural properties, mass losses, and moisture behavior of thermally modified Douglas-fir pretreated with boron or glycerol were examined. Pretreatments were associated with slight, but not significant, reductions in modulus of rupture (MOR) and modulus of elasticity (MOE) of Douglas-fir at different thermal treatment levels. Boron pretreatment had the greatest effect on MOR. MOR of non-pretreated and boron-treated samples increased slightly at the initial stage of thermal treatment and then decreased with rising temperature and time. The MOR of glycerol-treated samples decreased with increasing temperature and time. The thermal treatments employed had no significant effect on MOE. Both temperature and pretreatments improved anti-swell efficiency. Further studies are underway to characterize the nature of the chemical changes associated with the thermal modification process.
Details
- Title
- Effects of thermal modification on physical and mechanical properties of douglas-fir heartwood
- Authors
- L Yan (Author) - Northwest A & F University, ChinaJeffrey J Morrell (Author) - Oregon State University, United States
- Publication details
- BioResources, Vol.9(4), pp.7152-7161
- Publisher
- North Carolina State University - College of Natural Resources
- Date published
- 2014
- DOI
- 10.15376/biores.9.4.7152-7161
- ISSN
- 1930-2126
- Copyright note
- Copyright © 2014 The author. Reproduced here with kind permission.
- Organisation Unit
- University of the Sunshine Coast, Queensland; National Centre for Timber Durability and Design Life
- Language
- English
- Record Identifier
- 99451239302621
- Output Type
- Journal article
Metrics
75 File views/ downloads
243 Record Views