Influence of Infill Density on Bacterial Colonization and Mechanical Performance of 3D-Printed PETG Scaffolds.

Raghad A Alabdli, Rewaa S Jalal, Abdulrahman A Alqarni, Ahmad A Basalah, Laila A Damiati

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Article in Polymers, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

5 authors.

Raghad A AlabdliDepartment of Biological Sciences, Collage of Science, University of Jeddah, Jeddah 21589, Saudi Arabia.

Rewaa S JalalDepartment of Biological Sciences, Collage of Science, University of Jeddah, Jeddah 21589, Saudi Arabia.ORCID 0000-0002-8372-9117

Abdulrahman A AlqarniMechanical Engineering Department, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia.

Ahmad A BasalahMechanical Engineering Department, Collage of Engineering and Architecture, Umm Al-Qura University, Makkah 21955, Saudi Arabia.ORCID 0000-0003-0926-8321

Laila A DamiatiDepartment of Biological Sciences, Collage of Science, University of Jeddah, Jeddah 21589, Saudi Arabia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Polyethylene terephthalate glycol (PETG) is a versatile thermoplastic widely used in food packaging and biomedical applications owing to its excellent mechanical properties, chemical resistance, biocompatibility, and ease of processing. Porosity is a critical design parameter that governs the biological and mechanical performance of 3D-printed PETG structures by influencing cell attachment, nutrient transport, mechanical integrity, and microbial interactions. In this study, PETG scaffolds were fabricated at five nominal infill densities (20%, 40%, 60%, 80%, and 100%) using fused deposition modelling (FDM) to investigate the influence of printing-defined architecture on mechanical performance and bacterial colonization. Tensile testing revealed that decreasing infill density resulted in a progressive reduction in ultimate tensile strength and Young's modulus, demonstrating the trade-off between reduced material density and mechanical integrity. Bacterial interactions with the scaffolds were evaluated against

Indexed as

3D printingantibacterial applicationinfill densityPETGtensile test

Identifiers

PMID42797208

DOI10.3390/polym18182299

PMCPMC13611749

What OpenQuestion holds

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.