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Effect of thermal modification of wood particles for wood-PLA composites on properties of filaments, 3D-printed parts and injection moulded parts
ID
Krapež Tomec, Daša
(
Author
),
ID
Schwarzkopf, Matthew
(
Author
),
ID
Repič, Rožle
(
Author
),
ID
Žigon, Jure
(
Author
),
ID
Gospodarič, Bojan
(
Author
),
ID
Kariž, Mirko
(
Author
)
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https://link.springer.com/article/10.1007/s00107-023-02018-2
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Abstract
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.
Language:
English
Keywords:
wood-PLA composite
,
3D printing
,
injection moulding
,
thermally modified wood
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
BF - Biotechnical Faculty
Publication status:
Published
Year:
2024
Number of pages:
13 str.
Numbering:
Vol. 82, iss. 2
PID:
20.500.12556/RUL-155263
UDC:
630*8
ISSN on article:
1436-736X
DOI:
10.1007/s00107-023-02018-2
COBISS.SI-ID:
179904515
Publication date in RUL:
22.03.2024
Views:
316
Downloads:
127
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Record is a part of a journal
Title:
European journal of wood and wood products
Publisher:
Springer Verlag
ISSN:
1436-736X
COBISS.SI-ID:
22253061
Secondary language
Language:
Slovenian
Keywords:
les-PLA kompoziti
,
3D tisk
,
injekcijsko brizganje
,
termično modificiran les
,
filament
Projects
Funder:
ARIS - Slovenian Research and Innovation Agency
Project number:
P4-0015
Name:
Les in lignocelulozni kompoziti
Funder:
ARIS - Slovenian Research and Innovation Agency
Project number:
P4-0430
Name:
Gozdno-lesna veriga in podnebne spremembe: prehod v krožno biogospodarstvo
Funder:
ARIS - Slovenian Research and Innovation Agency
Project number:
P2-0273
Name:
Gradbeni objekti in materiali
Funder:
EC - European Commission
Funding programme:
H2020
Project number:
739574
Name:
Renewable materials and healthy environments research and innovation centre of excellence
Acronym:
InnoRenew CoE
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