Sun, Y.; Lee, D.; Wang, Y.; Li, S.; Ying, J.; Liu, X.; Xu, G.; Gwon, J.; Wu, Q. Thermal Decomposition Behavior of
3D Printing Filaments Made of Wood‐filled Polylactic Acid/Starch Blend. Journal of Applied Polymer Science 2020, 138, 49944, doi:10.1002/app.49944.
Sun, Y.; Lee, D.; Wang, Y.; Li, S.; Ying, J.; Liu, X.; Xu, G.; Gwon, J.; Wu, Q. Thermal Decomposition Behavior of
3D Printing Filaments Made of Wood‐filled Polylactic Acid/Starch Blend. Journal of Applied Polymer Science 2020, 138, 49944, doi:10.1002/app.49944.
Sun, Y.; Lee, D.; Wang, Y.; Li, S.; Ying, J.; Liu, X.; Xu, G.; Gwon, J.; Wu, Q. Thermal Decomposition Behavior of
3D Printing Filaments Made of Wood‐filled Polylactic Acid/Starch Blend. Journal of Applied Polymer Science 2020, 138, 49944, doi:10.1002/app.49944.
Sun, Y.; Lee, D.; Wang, Y.; Li, S.; Ying, J.; Liu, X.; Xu, G.; Gwon, J.; Wu, Q. Thermal Decomposition Behavior of
3D Printing Filaments Made of Wood‐filled Polylactic Acid/Starch Blend. Journal of Applied Polymer Science 2020, 138, 49944, doi:10.1002/app.49944.
Abstract
Dynamic thermogravimetric (TG) analysis under nitrogen environment was used to understand the thermal decomposition process of 3D printing filaments made of wood-filled polylactic acid (PLA)/starch blend. The characteristic temperatures and apparent activation energy (AAE) of the filaments with various starch contents were calculated with well-known kinetic models by Friedman, Flynn-Wall-Ozawa, Coats-Redfern and Kissinger. With the increased starch content in the filament, the onset thermal decomposition temperatures of the filaments decreased gradually from 272.4 to 155.1°C. The thermal degradation degree became smaller, and the transitional temperature interval became larger with increased starch proportion. The AAE values of the three types of filaments with different starch ratios varied between 97 kJ/mol and 114 kJ/mol, depending on material composition and method of calculation. The improved understanding of thermal decomposition behavior of PLA-starch-wood composites can help develop more biodegradable PLA/starch-based filaments for 3D printing.
Keywords
Wood-filled PLA; Thermal Decomposition; Starch; 3D printing
Subject
Chemistry and Materials Science, Biomaterials
Copyright:
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.
