3D Printable Filaments Made of Biobased Polyethylene Biocomposites
by
Daniel Filgueira 1
, Solveig Holmen 2, Johnny K. Melbø 3, Diego Moldes 1, Andreas T. Echtermeyer 2 and Gary Chinga-Carrasco 3,*
Daniel Filgueira 1, Solveig Holmen 2, Johnny K. Melbø 3, Diego Moldes 1, Andreas T. Echtermeyer 2 and Gary Chinga-Carrasco 3,*
1
Department of Chemical Engineering, Edificio Isaac Newton, Lagoas-Marcosende s/n, University of Vigo, 36310 Vigo, Spain
2
Department of Mechanical and Industrial Engineering, NTNU, 7491 Trondheim, Norway
3
RISE PFI, Høgskoleringen 6b, 7491 Trondheim, Norway
*
Author to whom correspondence should be addressed.
Polymers 2018, 10(3), 314; https://doi.org/10.3390/polym10030314
Received: 21 February 2018 / Revised: 9 March 2018 / Accepted: 10 March 2018 / Published: 13 March 2018
(This article belongs to the Special Issue Polymers from Renewable Resources)
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.
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Keywords:
laccase; grafting; TMP; BioPE; biocomposites; lauryl gallate; octyl gallate; 3D printing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
MDPI and ACS Style
Filgueira, D.; Holmen, S.; Melbø, J.K.; Moldes, D.; Echtermeyer, A.T.; Chinga-Carrasco, G. 3D Printable Filaments Made of Biobased Polyethylene Biocomposites. Polymers 2018, 10, 314.
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