Properties improvement of seven hardwood species by combination of thermal and chemical modifications

Most European hardwoods are nowadays under-utilized due to drawbacks such as low dimensional stability, durability and surface hardness. Seven hardwood species were thermally and/or chemically modified in order to improve these disadvantages. Heat treatment was carried out in air at atmospheric pres...

Full description

Saved in:
Bibliographic Details
Published in:European journal of wood and wood products 2024-02, Vol.82 (1), p.93-106
Main Authors: Damay, Jérémie, Bender, Tobias, Munk, Christoph, Jousserand, Michael, Creton, Milena, Fredon, Emmanuel, Rémond, Romain, Meausoone, Pierre Jean, Pfriem, Alexander, Gérardin, Philippe
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Ceramics
Chemical modification
Composites
Dimensional stability
Furfuryl alcohol
Glass
Glycerol
Hardness
Hardwoods
Heat treatment
Heat treatments
Kitchen utensils
Life Sciences
Machines
Manufacturing
Moisture content
Musical instruments
Natural Materials
Original Article
Pallets
Processes
Surface hardness
Surface stability
Tartaric acid
Tropical forests
Utensils
Water content
Weight loss
Wood
Wood Science & Technology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Most European hardwoods are nowadays under-utilized due to drawbacks such as low dimensional stability, durability and surface hardness. Seven hardwood species were thermally and/or chemically modified in order to improve these disadvantages. Heat treatment was carried out in air at atmospheric pressure at three temperatures, while two types of chemical modifications were tested, the first being based on furfuryl alcohol with tartaric acid, the second being based on succinic anhydride and glycerol. Then, modified woods were studied to determine weight loss due to thermal treatment, solution uptake, weight percent gain and swelling due to chemical modification processes. After that, main properties of chemically modified woods were characterized including density, equilibrium moisture content, dimensional stability and surface hardness. Effect of thermal pretreatment on subsequent chemical modification and on properties of modified woods obtained have also been evaluated. Combination of thermal modification with chemical modification had led to better improvements than each separately. Furfurylation treatment appeared to be more efficient than polyester modification. Most of the modified samples were denser, more stable and harder than native wood. These modified woods might compete with imported tropical wood for applications requiring high stability and hardness, such as joinery, decking or flooring, music instruments, handles for tools or kitchen utensils.
ISSN:0018-3768
1436-736X
DOI:10.1007/s00107-023-02000-y