3D printed elastomers with superior stretchability and mechanical integrity by parametric optimization of extrusion process using Taguchi method

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Bayati, A, Ahmadi, M, Rahmatabadi, D, Khodaei, M, Xiang, H, Baniassadi, M, Abrinia, K, Zolfagharian, A, Bodaghi, M ORCID: https://orcid.org/0000-0002-0707-944X and Baghani, M, 2025. 3D printed elastomers with superior stretchability and mechanical integrity by parametric optimization of extrusion process using Taguchi method. Materials Research Express, 12 (1): 015301. ISSN 2053-1591

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Official URL: https://doi.org/10.1088/2053-1591/ada1a6

Abstract

This study focused on a modified Fused Deposition Modeling (FDM) 3D printing method, specifically the direct pellet printing of a propylene-based thermoplastic elastomer, Vistamaxx™ 6202, to address challenges like printability and weak mechanical properties. The main objective was optimizing printing parameters and investigating their impact on the mechanical properties. The Taguchi method was used to design the experiments, reducing the required experiments and optimizing printing parameters to maximize desired properties. Three influential parameters were chosen, each changing to three levels. By employing the Taguchi method, the number of experiments decreased from 27 full factorials to 9. Regression models were created through analysis of variance (ANOVA) and verified by additional experiments. Tensile tests were performed according to the ASTM D638 standard. SEM imaging was used to assess interlayer adhesion and structural integrity. The results demonstrated satisfactory interlayer adhesion and structural integrity of the printed samples. Notably, the printed thermoplastic elastomers achieved significant stretchability, reaching up to 5921.3%. The tensile strength was 5.22 MPa, with a tensile modulus of 1.7 MPa. The effect of each parameter and their contribution percentage to the tensile strength, elongation, and elastic modulus were obtained from the variance analysis.

Item Type:	Journal article
Publication Title:	Materials Research Express
Creators:	Bayati, A., Ahmadi, M., Rahmatabadi, D., Khodaei, M., Xiang, H., Baniassadi, M., Abrinia, K., Zolfagharian, A., Bodaghi, M. and Baghani, M.
Publisher:	IOP Publishing
Date:	January 2025
Volume:	12
Number:	1
ISSN:	2053-1591
Identifiers:	Number Type 10.1088/2053-1591/ada1a6 DOI 2332752 Other
Rights:	© 2025 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence (https://creativecommons.org/licenses/by/4.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Divisions:	Schools > School of Science and Technology
Record created by:	Laura Borcherds
Date Added:	07 Jan 2025 16:29
Last Modified:	07 Jan 2025 16:29
URI:	https://irep.ntu.ac.uk/id/eprint/52800