3D Printer Application Properties of MFC-PLA Composite Filament Fabricated with Organosolv-Derived MFC

• DOI: 10.7584/jktappi.2019.12.51.6.110
• Publication Date: 2020-01-16T01:43:57Z
• Authors: Ji-Ae Ryu; Su-Jeong Park; Tae-Jin Eom; Jung Myoung Lee
• Keywords: Organosolv; Polylactic Acid

Lignin-contained microfibrillated cellulose (LMFC) has recently received much attention with potential applications as reinforcement materials in polymer composites. This paper presented the applicability of organosolv-derived MFC a polylactic acid (PLA). Approximately 15.1% lignin containing pulp was prepared by organosolv pulping and then subjected to homogenization solvent exchange processes produce powder form LMFC 22.9 aspect ratio. The MFC-PLA filaments contained 1-10% wt% were extruded FDM (fused deposition modeling) 3D-printed specimens fabricated evaluate mechanical thermal properties composite. It confirmed that high stress low strain occurred content increased Elastic modulus up 57% tensile strength 19% compared neat PLA although extension TEA (total energy absorption) diminished. differential scanning calorimetry (DSC) result showed contents composite did not appear significantly, but glass transition temperature (Tg) decreased about 10℃ when added. dynamic analysis (DMA) loss coefficient (tan D) 1.7 at 50℃ lower temperatures PLA, 3.3 60℃. Therefore, composites are expected have more robust behavior than PLA.