Enhanced wood plastic composites: Wood fibres as reinforcement in PLA composites

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

In the study, two wood fibre types, bleached softwood kraft pulp (BSKP) and thermomechanical pulp (TMP) with fibre lengths of 2.28 and 1.40 mm, respectively, were melt processed with poly(lactic acid) (PLA) using a twin-screw extruder to fibre content of 30 wt-% and injection moulded. In addition, three wood flour (WF) types especially targeted for wood plastic composites (WPC's) with average particle sizes of 915, 500 and 150 ?m were selected as wood fillers and processed with same parameters. Microscopic analysis as well as macroscopic images showed very uniform fibre dispersion in BSKP and TMP fibre composites, whereas with wood flours clear irregular particle sizes and shapes were visible. Elastic modulus was increased with all the wood component types, but a clear reduction of impact strength and tensile strength were seen in wood flour composites, a phenomenon typical to polymer fillers. The reinforcement capability of wood fibres comes apparent by detecting an increased material ductility and strength when wood in fibre form is used as reinforcement. In addition, water absorption remained lower when fibres were used instead of wood flours. Thus, the use of wood fibres in WPC's instead of conventional wood flours offers improved material properties, uniform appearance with colouring possibilities and all together, an enhanced bio-based material for added-value products.
Original languageEnglish
Title of host publicationEcocomp Conference Proceedings 2013
Publication statusPublished - 2013
MoE publication typeA4 Article in a conference publication
Event5th International Conference on Sustainable Materials, Polymers and Composites, Ecocomp 2013 - Birmingham, United Kingdom
Duration: 3 Jul 20134 Jul 2013

Conference

Conference5th International Conference on Sustainable Materials, Polymers and Composites, Ecocomp 2013
Abbreviated titleEcocomp
CountryUnited Kingdom
CityBirmingham
Period3/07/134/07/13

Fingerprint

wood flour
wood plastic composites
wood fibers
composite materials
filling materials
kraft pulp
softwood
particle size
pulp fiber
polylactic acid
biobased products
value-added products
extruders
tensile strength
screws
fiber content
modulus of elasticity
pulp
polymers
image analysis

Keywords

  • biocomposite
  • WPC
  • wood fibre
  • reinforcement

Cite this

@inproceedings{35517b87b4b24b188ceafc7d8f2f95a2,
title = "Enhanced wood plastic composites: Wood fibres as reinforcement in PLA composites",
abstract = "In the study, two wood fibre types, bleached softwood kraft pulp (BSKP) and thermomechanical pulp (TMP) with fibre lengths of 2.28 and 1.40 mm, respectively, were melt processed with poly(lactic acid) (PLA) using a twin-screw extruder to fibre content of 30 wt-{\%} and injection moulded. In addition, three wood flour (WF) types especially targeted for wood plastic composites (WPC's) with average particle sizes of 915, 500 and 150 ?m were selected as wood fillers and processed with same parameters. Microscopic analysis as well as macroscopic images showed very uniform fibre dispersion in BSKP and TMP fibre composites, whereas with wood flours clear irregular particle sizes and shapes were visible. Elastic modulus was increased with all the wood component types, but a clear reduction of impact strength and tensile strength were seen in wood flour composites, a phenomenon typical to polymer fillers. The reinforcement capability of wood fibres comes apparent by detecting an increased material ductility and strength when wood in fibre form is used as reinforcement. In addition, water absorption remained lower when fibres were used instead of wood flours. Thus, the use of wood fibres in WPC's instead of conventional wood flours offers improved material properties, uniform appearance with colouring possibilities and all together, an enhanced bio-based material for added-value products.",
keywords = "biocomposite, WPC, wood fibre, reinforcement",
author = "Heidi Peltola and Elina P{\"a}{\"a}kk{\"o}nen and Petri Jetsu",
note = "Project code: 19254",
year = "2013",
language = "English",
booktitle = "Ecocomp Conference Proceedings 2013",

}

Peltola, H, Pääkkönen, E & Jetsu, P 2013, Enhanced wood plastic composites: Wood fibres as reinforcement in PLA composites. in Ecocomp Conference Proceedings 2013., 264, 5th International Conference on Sustainable Materials, Polymers and Composites, Ecocomp 2013, Birmingham, United Kingdom, 3/07/13.

Enhanced wood plastic composites : Wood fibres as reinforcement in PLA composites. / Peltola, Heidi; Pääkkönen, Elina; Jetsu, Petri.

Ecocomp Conference Proceedings 2013. 2013. 264.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

TY - GEN

T1 - Enhanced wood plastic composites

T2 - Wood fibres as reinforcement in PLA composites

AU - Peltola, Heidi

AU - Pääkkönen, Elina

AU - Jetsu, Petri

N1 - Project code: 19254

PY - 2013

Y1 - 2013

N2 - In the study, two wood fibre types, bleached softwood kraft pulp (BSKP) and thermomechanical pulp (TMP) with fibre lengths of 2.28 and 1.40 mm, respectively, were melt processed with poly(lactic acid) (PLA) using a twin-screw extruder to fibre content of 30 wt-% and injection moulded. In addition, three wood flour (WF) types especially targeted for wood plastic composites (WPC's) with average particle sizes of 915, 500 and 150 ?m were selected as wood fillers and processed with same parameters. Microscopic analysis as well as macroscopic images showed very uniform fibre dispersion in BSKP and TMP fibre composites, whereas with wood flours clear irregular particle sizes and shapes were visible. Elastic modulus was increased with all the wood component types, but a clear reduction of impact strength and tensile strength were seen in wood flour composites, a phenomenon typical to polymer fillers. The reinforcement capability of wood fibres comes apparent by detecting an increased material ductility and strength when wood in fibre form is used as reinforcement. In addition, water absorption remained lower when fibres were used instead of wood flours. Thus, the use of wood fibres in WPC's instead of conventional wood flours offers improved material properties, uniform appearance with colouring possibilities and all together, an enhanced bio-based material for added-value products.

AB - In the study, two wood fibre types, bleached softwood kraft pulp (BSKP) and thermomechanical pulp (TMP) with fibre lengths of 2.28 and 1.40 mm, respectively, were melt processed with poly(lactic acid) (PLA) using a twin-screw extruder to fibre content of 30 wt-% and injection moulded. In addition, three wood flour (WF) types especially targeted for wood plastic composites (WPC's) with average particle sizes of 915, 500 and 150 ?m were selected as wood fillers and processed with same parameters. Microscopic analysis as well as macroscopic images showed very uniform fibre dispersion in BSKP and TMP fibre composites, whereas with wood flours clear irregular particle sizes and shapes were visible. Elastic modulus was increased with all the wood component types, but a clear reduction of impact strength and tensile strength were seen in wood flour composites, a phenomenon typical to polymer fillers. The reinforcement capability of wood fibres comes apparent by detecting an increased material ductility and strength when wood in fibre form is used as reinforcement. In addition, water absorption remained lower when fibres were used instead of wood flours. Thus, the use of wood fibres in WPC's instead of conventional wood flours offers improved material properties, uniform appearance with colouring possibilities and all together, an enhanced bio-based material for added-value products.

KW - biocomposite

KW - WPC

KW - wood fibre

KW - reinforcement

M3 - Conference article in proceedings

BT - Ecocomp Conference Proceedings 2013

ER -