Zobrazit minimální záznam

dc.contributor.authorBekhta, Pavlo
dc.contributor.authorKozak, Ruslan
dc.contributor.authorGryc, Vladimír
dc.contributor.authorPipíška, Tomáš
dc.contributor.authorSedliačik, Ján
dc.contributor.authorReh, Roman
dc.contributor.authorRáheľ, Jozef
dc.contributor.authorRousek, Radim
dc.date.accessioned2024-01-31T01:03:17Z
dc.date.available2024-01-31T01:03:17Z
dc.date.issued2023
dc.identifier.issn0926-6690 Sherpa/RoMEO, JCR
dc.identifier.urihttps://repozitar.mendelu.cz/xmlui/handle/20.500.12698/1834
dc.description.abstractIn this study we assessed the efficacy of manufacturing lightweight particleboards using sunflower (Helianthus annuus L.) stalk particles. Three-layer lightweight particleboards with target densities of 350, 450 and 550 kg/m3 were produced with different proportions of wood-to-sunflower stalk particles (100:0%, 75:25%, 50:50%, 25:75%, 0:100%) in the core layer. The outer layers consisted only of wood particles. The boards made entirely with wood particles in the outer and core layers were reference boards. Conventional urea-formaldehyde (UF) resin was used to bond the particles. It was found that the replacement of wood particles in the core layer with sunflower stalk particles led to an improvement in the physical and mechanical properties of lightweight UF-bonded particleboards. Three-layer boards with the optimum combination of 100% wood particles in the outer layers and 100% sunflower stalk particles in the core layer had slightly higher bending strength (MOR) and modulus of elasticity (MOE) than boards made entirely from 100% wood particles, but much greater internal bonding strength (IB), lower water absorption (WA) and less thickness swelling (TS) at the same board density. The MOR, MOE and IB values for 550 kg/m3 boards containing 100% sunflower particles in the core layer were higher than the reference boards by 16.3%, 16.6% and 62.7%, respectively. The MOR, MOE and IB of lightweight particleboards with densities of 450 and 550 kg/m3 made with 100% sunflower particles in the core layer fully complied with the CEN/TS 16368 standard for both types of board, LP1 and LP2. Substitution of wood particles with sunflower stalk particles did not cause negative changes in the formaldehyde content of the boards.en
dc.format117444
dc.publisherElsevier Science BV
dc.relation.ispartofIndustrial Crops and Products
dc.relation.urihttps://doi.org/10.1016/j.indcrop.2023.117444
dc.rightsNo License
dc.rightsOpen Access (green)en
dc.subjectLightweight particleboarden
dc.subjectSunflower stalksen
dc.subjectWood particlesen
dc.subjectUrea-formaldehyde resinen
dc.subjectPhysical and mechanical propertiesen
dc.titleProperties of lightweight particleboard made with sunflower stalk particles in the core layeren
dc.typeJ_ČLÁNEK
dc.date.updated2024-01-31T01:03:17Z
dc.description.versionPreprint
local.identifier.doi10.1016/j.indcrop.2023.117444
local.identifier.wos001081379400001
local.number1 December
local.volume205
local.identifier.obd43925441
local.identifier.e-issn1872-633X
dc.project.ID952314
dc.project.IDAdaption strategies in forestry under global climate change impact (ASFORCLIC)
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0926669023012098?via%3Dihub
dc.identifier.orcidBekhta, Pavlo 0000-0002-4320-5247
dc.identifier.orcidGryc, Vladimír 0000-0001-9632-9625
dc.identifier.orcidPipíška, Tomáš 0000-0001-8096-4376
dc.identifier.orcidRáheľ, Jozef 0000-0002-2850-8039
dc.identifier.orcidRousek, Radim 0000-0002-5528-6777
local.contributor.affiliationLDF
local.horizonH_2020


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