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Effect of thermal modification of wood on the rheology, mechanical properties and dimensional stability of wood composite filaments and 3D-printed parts
ID Krapež Tomec, Daša (Avtor), ID Schöflinger, Manfred (Avtor), ID Leßlhumer, Jürgen (Avtor), ID Žigon, Jure (Avtor), ID Humar, Miha (Avtor), ID Kariž, Mirko (Avtor)

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URLURL - Izvorni URL, za dostop obiščite https://www.tandfonline.com/doi/full/10.1080/17480272.2024.2316740 Povezava se odpre v novem oknu

Izvleček
This paper describes the development and characterisation of wood-filled polylactic acid (PLA) composite filaments for application in fused filament fabrication three-dimensional (3D) printing. Four different wood-polymer composite filaments for 3D printing were prepared, and specimens were 3D-printed with the obtained materials. The composite filaments consisted of wood particles (10% or 20% mass ratio) and a PLA polymer matrix. Wood particles were prepared by grinding and sieving non-modified beech wood and thermally modified (TM) (at 200 °C) beech wood. Thermal modification of wood affected particle preparation and smaller particles with lower aspect ratios were obtained. Filaments with TM wood particles were extruded better than with non-modified wood particles, with lower surface roughness and lower porosity. With a higher wood ratio, the surface roughness and porosity of the filament increased. Non-homogenous filaments also affected extrusion in 3D printing and reduced the properties of 3D-printed parts. Parts 3D-printed from filaments with TM particles had better tensile strength than from filaments with non-modified particles, but were lower than from pure PLA filaments. The tensile strength of the injection-moulded specimens was 18–69% higher than that of the 3D-printed specimens, depending on the filament composition. The results indicate some positive effects of thermal modification of wood particles on the properties of filaments and 3D-printed parts. Nevertheless, further optimisation of particle preparation and extrusion parameters is needed to obtain quality filaments with this size of wood particles.

Jezik:Angleški jezik
Ključne besede:wood-polylactic acid composite, 3D printing, thermally modified wood, dimensional stability, mechanical properties
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:BF - Biotehniška fakulteta
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Datum objave:01.01.2024
Leto izida:2024
Št. strani:Str. 1-15
Številčenje:Vol. [sprejeto v objavo], iss. [sprejeto v objavo]
PID:20.500.12556/RUL-154538 Povezava se odpre v novem oknu
UDK:630*8
ISSN pri članku:1748-0280
DOI:10.1080/17480272.2024.2316740 Povezava se odpre v novem oknu
COBISS.SI-ID:186147843 Povezava se odpre v novem oknu
Datum objave v RUL:20.02.2024
Število ogledov:614
Število prenosov:45
Metapodatki:XML DC-XML DC-RDF
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Gradivo je del revije

Naslov:Wood material science & engineering
Skrajšan naslov:Wood mater. sci. eng
Založnik:Taylor & Francis
ISSN:1748-0280
COBISS.SI-ID:522172953 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:les-PLA kompozit, 3D tisk, termično modificiran les, dimenzijska stabilnost, mehanske lastnosti

Projekti

Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:P4-0015
Naslov:Les in lignocelulozni kompoziti

Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:P4-0430
Naslov:Gozdno-lesna veriga in podnebne spremembe: prehod v krožno biogospodarstvo

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