Effect of Microwave and Steam Treatment on the Thermo-Hygro-Plasticity of Beech Wood
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F21%3A43920481" target="_blank" >RIV/62156489:43410/21:43920481 - isvavai.cz</a>
Výsledek na webu
<a href="https://dx.doi.org/10.15376/biores.16.4.8338-8352" target="_blank" >https://dx.doi.org/10.15376/biores.16.4.8338-8352</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.15376/biores.16.4.8338-8352" target="_blank" >10.15376/biores.16.4.8338-8352</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Effect of Microwave and Steam Treatment on the Thermo-Hygro-Plasticity of Beech Wood
Popis výsledku v původním jazyce
The effects of microwave and steam treatment were analyzed relative to the immediate (thermo-hygro-plasticity) and post-assessed (permanent changes) properties of wood. The study was conducted using European beech (Fagus sylvatica L.) standard and 1.5 times up-scaled (only for microwave-heated and reference samples) bending specimens tested in a static three-point loading mode. The specimens were plasticized by heat and moisture (1) separately and (2) simultaneously by heating moist specimens using (i) various microwave regimes in continuous mode, and (ii) heated saturated steam in discontinuous mode. Oven-dried specimens tested at 20 oC served as references. The thermo-hygro-plasticity was studied immediately after treatment, whereas the permanent changes were assessed after oven-drying of plasticized specimens to 0% moisture content. Permanent structural changes were analyzed using scanning electron microscopy. Microwave treatment increased the plasticity of wood (decreasing the modulus of elasticity by 70%) comparably to steam treatment, when the output moisture content was 30% or higher. A similar degree of plasticity was found in up-scaled specimens heated by microwaves. Further analyses confirmed that microwave treatment did not cause any permanent damage to wood structure or reduce mechanical performance. The results showed that microwave treatment is an efficient alternative to steaming when plasticizing moist wood.
Název v anglickém jazyce
Effect of Microwave and Steam Treatment on the Thermo-Hygro-Plasticity of Beech Wood
Popis výsledku anglicky
The effects of microwave and steam treatment were analyzed relative to the immediate (thermo-hygro-plasticity) and post-assessed (permanent changes) properties of wood. The study was conducted using European beech (Fagus sylvatica L.) standard and 1.5 times up-scaled (only for microwave-heated and reference samples) bending specimens tested in a static three-point loading mode. The specimens were plasticized by heat and moisture (1) separately and (2) simultaneously by heating moist specimens using (i) various microwave regimes in continuous mode, and (ii) heated saturated steam in discontinuous mode. Oven-dried specimens tested at 20 oC served as references. The thermo-hygro-plasticity was studied immediately after treatment, whereas the permanent changes were assessed after oven-drying of plasticized specimens to 0% moisture content. Permanent structural changes were analyzed using scanning electron microscopy. Microwave treatment increased the plasticity of wood (decreasing the modulus of elasticity by 70%) comparably to steam treatment, when the output moisture content was 30% or higher. A similar degree of plasticity was found in up-scaled specimens heated by microwaves. Further analyses confirmed that microwave treatment did not cause any permanent damage to wood structure or reduce mechanical performance. The results showed that microwave treatment is an efficient alternative to steaming when plasticizing moist wood.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20502 - Paper and wood
Návaznosti výsledku
Projekt
<a href="/cs/project/GJ19-25171Y" target="_blank" >GJ19-25171Y: Hygro-termo-mechanické chování modifikovaných materiálů na bázi dřeva na různých úrovních pozorování</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
BioResources
ISSN
1930-2126
e-ISSN
1930-2126
Svazek periodika
16
Číslo periodika v rámci svazku
4
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
15
Strana od-do
8338-8352
Kód UT WoS článku
000748249200030
EID výsledku v databázi Scopus
2-s2.0-85137266490