On the Buckling Behavior of DLP 3D Printed PLA with AgNO₃ Addition

Abstract:

The antibacterial effects of AgNO₃ have been observed and utilized in various applications. However, only a few studies have examined its effects on the mechanical properties of a matrix when combined. In this study, AgNO₃ was used as an additive and blended with PLA resin for 3D printing to study its impact on buckling behavior, which is critical for designing slender column structures. To prepare the mixture, several processes were undertaken: (1) dissolving AgNO₃ in distilled water; (2) adding the dissolved AgNO₃ into the PLA resin; (3) stirring; (4) degassing; and (5) re-stirring. Based on the experimental results, the addition of AgNO₃ led to a decrease in the buckling strength of PLA. For pure PLA specimens, the critical buckling stresses are 47.92, 44.91, 29.72, and 17.11 MPa for lengths of 10, 50, 100, and 150 mm, respectively. For the PLA + 2% AgNO₃ specimens, the values are 23.55, 18.89, 15.1, and 10.48 MPa for the same lengths. Moreover, when compared to the theory using the Johnson and Euler buckling formulas, the obtained experimental results show good agreement.

• Periodical: Materials Science Forum (Volume 1134)
• Pages: 93-104
• DOI: https://doi.org/10.4028/p-n0yAwH
• Online since: December 2024
• Authors: I. Ketut Adhiarta Laksemana, Muhammad Akhsin Muflikhun, Murni Handayani, Yosephin Dewiani Rahmayanti, Faisal Mahmuddin, Farid Triawan*
• Keywords: Buckling Behavior, Digital Light Processing (DLP) 3D Print, Polylactic-Acid (PLA) Resin, Silver Nitrate (AgNO₃)

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