Journal
MADERAS-CIENCIA Y TECNOLOGIA
Volume 20, Issue 4, Pages 737-746Publisher
UNIV BIO-BIO
DOI: 10.4067/S0718-221X2018005041901
Keywords
Cellulose crystallinity; chemical modification; heat treatment; quinone derivatives; Tectona grandis
Categories
Ask authors/readers for more resources
During the thermal modification of the wood there is a decreasing gradient of temperature from the surface to its interior, therefore, the most severe chemical modifications occur on the surface. These chemical modifications directly affect the quality and durability of adhesives and coating. Therefore, this study investigated the chemical modification of the surface of thermally-modified teak juvenile wood. Heartwood and sapwood samples were treated at 180 and 200 degrees C. Chemical analyses were performed by Fourier transform infrared spectroscopy (FTIR) in reflectance mode with a microscope. Spectra showed an increase in cellulose crystallinity and a decrease in relative contents of hydroxyl groups, lignin and extractives - especially quinones, waxes and oils - following thermal modification. Extractive content of the heartwood was relatively higher than that of sapwood. Heartwood was more susceptible to thermal degradation than sapwood.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available