Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/87827
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Title: Cellulose nanofibrils filled poly(lactic acid) biocomposite filament for FDM 3D printing
Authors: Wang, QQ
Ji, CC
Sun, LS 
Sun, JZ
Liu, J
Issue Date: 2-May-2020
Source: Molecules, 2 May 2020, v. 25, no. 10, p. 1-13
Abstract: As direct digital manufacturing, 3D printing (3DP) technology provides new development directions and opportunities for the high-value utilization of a wide range of biological materials. Cellulose nanofibrils (CNF) and polylactic acid (PLA) biocomposite filaments for fused deposition modeling (FDM) 3DP were developed in this study. Firstly, CNF was isolated by enzymatic hydrolysis combined with high-pressure homogenization. CNF/PLA filaments were then prepared by melt-extrusion of PLA as the matrix and CNF as the filler. Thermal stability, mechanical performance, and water absorption property of biocomposite filaments and 3D-printed objects were analyzed. Findings showed that CNF increased the thermal stability of the PLA/PEG600/CNF composite. Compared to unfilled PLA FDM filaments, the CNF filled PLA biocomposite filament showed an increase of 33% in tensile strength and 19% in elongation at break, suggesting better compatibility for desktop FDM 3DP. This study provided a new potential for the high-value utilization of CNF in 3DP in consumer product applications.
Keywords: Melt extrusion
3D printing
Cellulose nanofibrils
Biocomposite filaments
Physical property
Publisher: Molecular Diversity Preservation International
Journal: Molecules 
ISSN: 1420-3049
DOI: 10.3390/molecules25102319
Rights: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
The following publication Wang, Q.; Ji, C.; Sun, L.; Sun, J.; Liu, J. Cellulose Nanofibrils Filled Poly(Lactic Acid) Biocomposite Filament for FDM 3D Printing. Molecules 2020, 25, 2319 is available at https://dx.doi.org/10.3390/molecules25102319
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