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Tailored Additives for Incorporation of Antibacterial Functionality Into Laser Sintered Parts

Wingham, James R.; Ahmed, Ifty; Islam, Md Towhidul; Shepherd, Joanna; Majewski, Candice


James R. Wingham

Md Towhidul Islam

Joanna Shepherd

Candice Majewski


Infectious disease is a major cause of death worldwide, and novel methods capable of controlling the spread of disease are in high demand. This research presents a method of producing antimicrobial microcomposites by exploiting the powder-based nature of the Laser Sintering Additive Manufacturing process, via the incorporation of silver-containing additives. Silver phosphate glass additives in different formulations were designed to determine the effect of dissolution rate on the antimicrobial efficacy. These were characterised and successfully incorporated into polyamide 12 parts, without affecting the mechanical properties. The printed microcomposite parts displayed both bactericidal and antibiofouling effects against Gram-positive and Gram-negative bacteria in nutrient-poor conditions, with the efficacy found to be more sensitive to silver content than degradation rate.


Wingham, J. R., Ahmed, I., Islam, M. T., Shepherd, J., & Majewski, C. (2022). Tailored Additives for Incorporation of Antibacterial Functionality Into Laser Sintered Parts. Frontiers in Biomaterials Science, 1, Article 929006.

Journal Article Type Article
Acceptance Date Jun 9, 2022
Online Publication Date Jul 8, 2022
Publication Date Jul 8, 2022
Deposit Date Jul 8, 2022
Publicly Available Date Jul 8, 2022
Journal Frontiers in Biomaterials Science
Publisher Frontiers Media
Peer Reviewed Peer Reviewed
Volume 1
Article Number 929006
Keywords polymer laser sintering; antibacterial material; phosphate glass; microcomposite; additive manufacturing
Public URL
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