3D printable filaments made of biobased polyethylene biocomposites

  • Daniel Filgueira
  • , Solveig Holmen
  • , Johnny K. Melbø
  • , Diego Moldes
  • , Andreas T. Echtermeyer
  • , Gary Chinga-Carrasco*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)

Abstract

Two different series of biobased polyethylene (BioPE) were used for the manufacturing of biocomposites, complemented with thermomechanical pulp (TMP) fibers. The intrinsic hydrophilic character of the TMP fibers was previously modified by grafting hydrophobic compounds (octyl gallate and lauryl gallate) by means of an enzymatic-assisted treatment. BioPE with low melt flow index (MFI) yielded filaments with low void fraction and relatively low thickness variation. The water absorption of the biocomposites was remarkably improved when the enzymatically-hydrophobized TMP fibers were used. Importantly, the 3D printing of BioPE was improved by adding 10% and 20% TMP fibers to the composition. Thus, 3D printable biocomposites with low water uptake can be manufactured by using fully biobased materials and environmentally-friendly processes.

Original languageEnglish
Article number314
JournalPolymers
Volume10
Issue number3
DOIs
Publication statusPublished - 13 Mar 2018
Externally publishedYes

Keywords

  • 3D printing
  • BioPE
  • Biocomposites
  • Grafting
  • Laccase
  • Lauryl gallate
  • Octyl gallate
  • TMP

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