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An innovative method for the chemical modification of Carpinus betulus wood: a methodology and approach study

Bari, Ehsan, Jamali, Ali, Nazarnezhad, Nouredin, Nicholas, Darrel D., Humar, Miha, Najafian, Mohammad
Holzforschung 2019 v.73 no.9 pp. 839-846
Carpinus betulus, acetic acid, acetylation, acid treatment, bending strength, compression strength, decay resistance, durability, formalin, methylation, photochemistry, wood
The objective of this research was to evaluate the influence of acetyl and methyl bonds on the physical, mechanical, photochemical and biological resistance properties of hornbeam wood. Carpinus betulus (hornbeam) wood is considered to be a less valuable species due to poor durability. In order to improve its properties, a novel and simple method was applied to modify wood samples. Hence, wood samples were modified by either acetylation or methylation at four treatment levels. Reactions between hornbeam wood and the formalin and acetic acid treatment system were successful as exemplified by increased mass [weight percent gain (WPG)], slightly better compression strength and considerably improved impact bending strength. Furthermore, the biological decay resistance of the treated wood samples increased for all of the treatments.