Details
| Original language | English |
|---|---|
| Pages (from-to) | 31-37 |
| Number of pages | 7 |
| Journal | Scandinavian Journal of Forest Research |
| Volume | 19 |
| Publication status | Published - Dec 2004 |
| Externally published | Yes |
Abstract
To turn wood into a material with enhanced and less varied properties, many methods of chemical modification have been developed in the past few decades. In this work, the mechanical and physical properties of wood modified using nine methods were studied. The modification methods were acetylation, maleoylation, succinylation, furfurylation, modification with N-methylol acryl amide, modification with reactive linseed oil derivative, modification with methylated melamine resin, thermal modification in vegetable oil, and a combination of acetylation and modification with methylated melamine resin. The wood species used were Scots pine (Pinus sylvestris L.), beech (Fagus sylvatica L.) and birch (Betula pubescens Ehrh.). Both pure sapwood and heartwood specimens of pine were used. The following properties were studied: equilibrium moisture content, strength and stiffness in different climates, stiffness stabilization efficiency, antiswelling efficiency, impact bending strength and hardness. Acetylation and furfurylation were the most effective modification methods for achieving high dimensional stability, high stiffness stability and low equilibrium moisture content. The impact strength was reduced by all the methods, but to a varying extent. Acetylation, furfurylation and modification with methylated melamine formaldehyde resin led to a slight increase in bending strength. Furfurylation at high degrees of modification resulted in a substantial increase in hardness.
Keywords
- Chemical modification, Mechanical and physical, Performance
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
- Forestry
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Scandinavian Journal of Forest Research, Vol. 19, 12.2004, p. 31-37.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Differently modified wood
T2 - Comparison of some selected properties
AU - Epmeier, Hannah
AU - Westin, Mats
AU - Rapp, Andreas
PY - 2004/12
Y1 - 2004/12
N2 - To turn wood into a material with enhanced and less varied properties, many methods of chemical modification have been developed in the past few decades. In this work, the mechanical and physical properties of wood modified using nine methods were studied. The modification methods were acetylation, maleoylation, succinylation, furfurylation, modification with N-methylol acryl amide, modification with reactive linseed oil derivative, modification with methylated melamine resin, thermal modification in vegetable oil, and a combination of acetylation and modification with methylated melamine resin. The wood species used were Scots pine (Pinus sylvestris L.), beech (Fagus sylvatica L.) and birch (Betula pubescens Ehrh.). Both pure sapwood and heartwood specimens of pine were used. The following properties were studied: equilibrium moisture content, strength and stiffness in different climates, stiffness stabilization efficiency, antiswelling efficiency, impact bending strength and hardness. Acetylation and furfurylation were the most effective modification methods for achieving high dimensional stability, high stiffness stability and low equilibrium moisture content. The impact strength was reduced by all the methods, but to a varying extent. Acetylation, furfurylation and modification with methylated melamine formaldehyde resin led to a slight increase in bending strength. Furfurylation at high degrees of modification resulted in a substantial increase in hardness.
AB - To turn wood into a material with enhanced and less varied properties, many methods of chemical modification have been developed in the past few decades. In this work, the mechanical and physical properties of wood modified using nine methods were studied. The modification methods were acetylation, maleoylation, succinylation, furfurylation, modification with N-methylol acryl amide, modification with reactive linseed oil derivative, modification with methylated melamine resin, thermal modification in vegetable oil, and a combination of acetylation and modification with methylated melamine resin. The wood species used were Scots pine (Pinus sylvestris L.), beech (Fagus sylvatica L.) and birch (Betula pubescens Ehrh.). Both pure sapwood and heartwood specimens of pine were used. The following properties were studied: equilibrium moisture content, strength and stiffness in different climates, stiffness stabilization efficiency, antiswelling efficiency, impact bending strength and hardness. Acetylation and furfurylation were the most effective modification methods for achieving high dimensional stability, high stiffness stability and low equilibrium moisture content. The impact strength was reduced by all the methods, but to a varying extent. Acetylation, furfurylation and modification with methylated melamine formaldehyde resin led to a slight increase in bending strength. Furfurylation at high degrees of modification resulted in a substantial increase in hardness.
KW - Chemical modification
KW - Mechanical and physical
KW - Performance
UR - http://www.scopus.com/inward/record.url?scp=11144340835&partnerID=8YFLogxK
U2 - 10.1080/02827580410017825
DO - 10.1080/02827580410017825
M3 - Article
AN - SCOPUS:11144340835
VL - 19
SP - 31
EP - 37
JO - Scandinavian Journal of Forest Research
JF - Scandinavian Journal of Forest Research
SN - 0282-7581
ER -