Chemical Composition and FTIR Analysis of Acetylated Turkey Oak and Pannonia Poplar Wood

Fodor, Fanni and Hofmann, Tamás (2024) Chemical Composition and FTIR Analysis of Acetylated Turkey Oak and Pannonia Poplar Wood. FORESTS, 15 (1). ISSN 1999-4907

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Abstract

In this research, acetylation was applied under industrial conditions to improve the properties of Turkey oak and Pannonia poplar wood. Both species are potential “climate winners” in Hungary, yet they are currently underused due their low durability and poor dimensional stability. The acetylation modification process may be a suitable method to improve their properties. In order to verify the effectiveness of the process, comparative chemical analyses (cellulose, hemicelluloses, lignin, extractives, ash, buffering capacity, and pH) of the untreated and acetylated heartwood and sapwood were carried out for both species for the first time. Diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy was also used to support the evaluation of the chemical analyses. The weight percent gain was 11.54% for poplar and 0.94% for Turkey oak, indicating poor treatment efficiency for the latter. The cellulose, hemicelluloses, and lignin contents changed significantly in poplar, with the highest change (+81%) induced by acetylating the hemicelluloses. Only the alpha-cellulose content decreased significantly in Turkey oak, presumably due to the degradation of the non-crystalline part of the cellulose. Acetylation may improve the resistance of Pannonia poplar against moisture, weather, decay, and wood-boring insects, but the process parameters need to be optimized in order to prevent degradation and discoloration in poplar. Turkey oak was found to be less suitable for acetylation due to its low permeability and tendency to crack.

Tudományterület / tudományág

agricultural sciences > forestry and wildlife management
engineering and technology > material sciences and technologies
engineering and technology > wood industry
natural sciences > chemical sciences

Faculty

Not relevant

Institution

Soproni Egyetem

Item Type:	Article
SWORD Depositor:	Teszt Sword
Depositing User:	Csaba Horváth
Identification Number:	MTMT:34520057
Date Deposited:	11 Mar 2024 09:19
Last Modified:	11 Mar 2024 09:19
URI:	http://publicatio.uni-sopron.hu/id/eprint/3031

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