Influence of plasticizers on thermal and mechanical properties of biocomposite filaments made from lignin and polylactic acid for 3D printing
- Auburn Univ., AL (United States)
- Auburn Univ., AL (United States); Auburn Univ., AL (United States). Center for Polymers and Advanced Composites
- Auburn Univ., AL (United States); Auburn Univ., AL (United States). Center for Bioenergy and Bioproducts
- Montana State Univ., Bozeman, MT (United States)
- Univ. of Tennessee, Knoxville, TN (United States). Center for Renewable Carbon
- Univ. of Tennessee, Knoxville, TN (United States). Center for Renewable Carbon; Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Joint Inst. for Biological Sciences
Polylactic acid (PLA) and organosolv lignin were mixed at different ratios and extruded to obtain PLA-lignin composite filaments. PLA was replaced with lignin up to 20 wt%. Two plasticizers (polyethylene glycol (PEG) 2000 and struktol TR451) were added in varying concentrations to enhance the properties of PLA_L20 (20% lignin in PLA) composite filaments. Furthermore, the effect of lignin in PLA, and PEG, and struktol in PLA_L20 composites was investigated via tensile test, differential scanning calorimetry, thermogravimetric analysis, scanning electron microscopy, Fourier transform infrared spectroscopy of the filaments, and dynamic mechanical analysis of 3D printed samples. A 2 wt% PEG was able to enhance both tensile stress and elongation at maximum load of PLA_L20 composite by 19% and 35%, respectively, whereas struktol TR451 was able to improve elongation at maximum load by 24%.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1777690
- Journal Information:
- Composites Part B: Engineering, Vol. 205, Issue 1; ISSN 1359-8368
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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