Manufacturing Technology 2023, 23(4):461-467 | DOI: 10.21062/mft.2023.050

Study of the Effect of Pretreatment of 3D Printed PLA Filament Modified by Plasma Discharge and Changes in Its Dynamic-Mechanical Properties

Marcel Kohutiar ORCID...1, Róbert Janík ORCID...2, Michal Krbata ORCID...1, Lenka Bartosova ORCID...1, Milan Jus ORCID...1, Ľudmila Timárová ORCID...1
1 Faculty of Special Technology, Alexander Dubcek University of Trenčín, Ku Kyselke 469, 911 06 Trenčín, Slovakia
2 Faculty of Industrial Technologies in Púchov, Alexander Dubček University of Trenčín, Ivana Krasku 491/30, 020 01 Púchov, Slovakia

The presented study focuses on the study of polylactide acid (PLA) material, which is a frequently used material in 3D printing. Surface modification using DCSBD plasma discharge is proposed as a way to improve the adhesion between individual layers of material. Adhesion is a critical factor for achieving high-quality print output, as low adhesion can cause individual deposited layers of material to separate and ripple during printing. Dynamic Mechanical Analysis (DMA) is used to determine the glass transition temperature (Tg) of a material. Tg is important because it determines how difficult the material is to print, the closer the Tg is to room temperature, the easier the material is to print. How-ever, after printing a layer of material and subsequently cooling it to room temperature, the material begins to shrink and wave due to the change in material expansion. This can have a negative effect on the adhesion between the layers of the material, which can lead to separation of the layers. The presented study tries to find a way to improve the adhesion of individual layers of material. Surface modification by plasma discharge appears to be a promising method that could improve the adhesion between individual layers of PLA material.

Keywords: PLA, Polymers, Materials, 3D printing, DMA, Surface modification
Grants and funding:

This work was supported by the Research Agency of the Ministry of Education, Science, Research and Sport of the Slovak Republic under the contract (ITMS2014+) no. 313011W442-CEDITEK II

Received: March 2, 2023; Revised: July 3, 2023; Accepted: July 11, 2023; Prepublished online: July 12, 2023; Published: September 5, 2023  Show citation

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Kohutiar M, Janík R, Krbata M, Bartosova L, Jus M, Timárová Ľ. Study of the Effect of Pretreatment of 3D Printed PLA Filament Modified by Plasma Discharge and Changes in Its Dynamic-Mechanical Properties. Manufacturing Technology. 2023;23(4):461-467. doi: 10.21062/mft.2023.050.
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