Effect of filament pre-drying on the microstructure and porosity of 3D printed PLA

Abdul Hamid, Rahimah and Husni, Siti Hidayah and Ito, Teruaki and Maidin, Shajahan and Maharof, Madihah (2024) Effect of filament pre-drying on the microstructure and porosity of 3D printed PLA. Journal of Advanced Research in Micro and Nano Engineering, 24 (1). pp. 85-94. ISSN 2756-8210

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Abstract

This paper explored the effect of filament pre-drying before 3D printing. A comparison between the undried and pre-dried 3D printed PLA was evaluated in terms of porosity, microstructure, and polymeric chain bonding. Three conditions were examined: a new PLA as a reference, used PLA filament stored in a vacuumed bag with 50g desiccant, and used PLA exposed to humidity for 48h, 96h, and 150h. The parameter setting for drying and 3D printing was constant for all conditions. As a result, pre-drying the filament resulted in a less porous microstructure, shorter interlayer gap, and better interlayer adhesion. The pre-drying method offers a better microstructure than undried filament. The density of the pre-dried sample was increased as the porosity decreased due to the improvement in the mass flow rate upon the extrusion process. Lastly, the FTIR analysis shows that the pre-dried filament exhibits an O-H molecule free from the O-H region broad peak, which shows no or almost no presence of water (H2O).

Item Type:	Article
Uncontrolled Keywords:	PLA filament, Pre-drying, Microstructure
Divisions:	Faculty Of Industrial And Manufacturing Technology And Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	11 Aug 2025 04:59
Last Modified:	11 Aug 2025 04:59
URI:	http://eprints.utem.edu.my/id/eprint/28907
Statistic Details:	View Download Statistic

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