Pregled bibliografske jedinice broj: 1178742
Influence of Ageing on Abrasion Volume Loss, Density, and Structural Components of Subfossil Oak
Influence of Ageing on Abrasion Volume Loss, Density, and Structural Components of Subfossil Oak // Applied Sciences-Basel, 12 (2022), 4; 1814, 12 doi:10.3390/app12041814 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 1178742 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Influence of Ageing on Abrasion Volume Loss,
Density, and Structural Components of Subfossil Oak
Autori
Rede, Vera ; Essert, Sara ; Kocijan, Martina ; Dubravac, Tomislav
Izvornik
Applied Sciences-Basel (2076-3417) 12
(2022), 4;
1814, 12
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
subfossil wood ; oak ; abrasion wear resistance ; FTIR analysis ; density
Sažetak
Subfossil oak wood has spent centuries or millennia in the aquatic medium (rivers, lakes, bogs, etc.) and, due to water anoxic conditions, its decomposition is very slow. As a result of its long residing in specific conditions, its chemical composition, appearance, as well as mechanical and tribological properties have changed. Because of its aesthetic and mechanical properties, subfossil wood is very attractive and often used to produce valuable objects. The main objective of this study was to test how abrasion wear resistance of subfossil oak is affected by ageing. The effects of ageing on wood density and on the structure of lignin and cellulose were tested, as well as the loss of volume during abrasion in correlation with these changes. A study was conducted on samples of recent (regular) pedunculate oak wood and on six subfossil pedunculate oak samples in the age range of 890 and nearly 6000 years. Abrasion wear resistance was expressed through the loss of volume recorded using the Taber abraser. The smallest abrasion volume loss was measured for the recent oak specimens. Linear regression analyses showed that there was a very strong negative linear relationship between the age of subfossil oak and its abrasion volume loss. There was also a strong, but positive and significant linear correlation between subfossil oak age and density. Ageing also affected the structural composition of wood. Results obtained by Fourier Transform Infrared spectroscopy indicated a reduction of the relative crystalline fraction of subfossil wood in recent oak. The degradation of lignin in subfossil oak samples progressed more slowly over time than cellulose degradation. There was a negative correlation between age and the ratio of cellulose and lignin degradation ; however, that relationship was found statistically insignificant. Similar results were obtained for the relationship between abrasion wear resistance and changes in the structural composition of the studied samples of subfossil oak wood.
Izvorni jezik
Engleski
Znanstvena područja
Drvna tehnologija, Interdisciplinarne biotehničke znanosti
POVEZANOST RADA
Ustanove:
Hrvatski šumarski institut, Jastrebarsko,
Prirodoslovno-matematički fakultet, Zagreb,
Fakultet strojarstva i brodogradnje, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus