CHEMICAL CHANGES DURING WOOD CUTTING

Hofmann, Tamás és Tolvaj, László és Pásztory, Zoltán (2025) CHEMICAL CHANGES DURING WOOD CUTTING. WOOD RESEARCH, 70 (2). pp. 202-211. ISSN 1336-4561

Szöveg chemical-changes-during-wood-cutting.pdf Download (234kB)

Absztrakt (kivonat)

Scots pine (Pinus sylvestris) and poplar (Populus euramericana) species were chosen for the experiments.Sawdust was made by a circular saw with a rare tooth spacing for producing bigger particles beside the fine fractions. Particles were separated by a vibration separator with the sieve sizes 1 mm, 0.63mm, 0.315 mm, 0.1 mm and 0.063 mm. Infrared reflectance spectra of the particles were measured to determine the chemical changes generated by the cutting procedure.The experimental results showed that the grinding of wood resulted in bond rupture for all ether bond types appearing in the infrared spectrum. The number of conjugated and unconjugated carbonyl groups in the wood was significantly reduced during the cutting procedure. After bond breaks, oxidation and recombination processes occurred generating compounds similar to the aromatic structure of lignin, which were shown by increases in absorption at 1514, 1271 and 1231 cm-1.

Tudományterület / tudományág

agrártudományok > erdészeti és vadgazdálkodási tudományok
műszaki tudományok > faipari tudományok
természettudományok > kémiai tudományok

Kar

Nem releváns

Intézmény

Soproni Egyetem

Mű tipusa:	Cikk
SWORD Depositor:	Teszt Sword
Felhasználó:	Csaba Horváth
A mű MTMT azonosítója:	MTMT:36184754
Dátum:	12 Jún 2025 09:55
Utolsó módosítás:	12 Jún 2025 09:55
URI:	http://publicatio.uni-sopron.hu/id/eprint/3641

Actions (login required)

Tétel nézet