Use of Acetylation for Production of Dimensionally Stable Wood Composites
The properties of wood-based panels are the result of the chemistry of the wood cell wall components and the three-dimensional matrix they are in. Nature is programmed to recycle thee panels, in a timely way, back into woods basic building blocks of carbon dioxide and water through biological, thermal, aqueous, photochemical, chemical, and mechanical degradations. If the chemistry of the wood is changed at the molecular level, properties can be altered and performance changed. Based on performance requirements of wood-based panels, chemical modifications can be carried out to change properties and performance. Dimensional stability, resistance to decay fungi and destructive insects, as well as other positive performance improvements can be greatly increased by reacting wood of different geometries with acetic anhydride (acetylation) resulting in a new generation of value added wood-based products that perform very well in adverse environments. Acetylation of different geometries before making up wood-based panels greatly improves stability in a wide spectrum of species and thus extends the carbon sequestration capabilities of otherwise non-durable species.
Chemical modification acetylation dimensional stability carbon sequestration
Roger M.Rowell
University of Wisconsin, Madison, Wl Chief Wood Scientist,Titan Wood Ltd., Westervoortsedijk 73, 6827 AV, Arnhem
国际会议
International Symposium on Wood Science and Technology(IAWPS 2008)(国际木材产品学会联合会2008学术研讨会)
哈尔滨
英文
403-404
2008-09-27（万方平台首次上网日期，不代表论文的发表时间）