Abstract

A polarized ferroelectric material can initiate the micro-electrolysis of water molecules which leads to the formation of reactive oxygen species (ROS) in an aqueous solution resulting in selective bacteria killing. This study presents the fabrication, characterization, and antimicrobial performance of poled ferroelectric particulate composites. Barium calcium zirconate titanate (BCZT) micro-powder is synthesized by a solid-state reaction and mechanically mixed with polycaprolactone (PCL) to be subsequently fed into the 3D bioprinter for the fabrication of porous PCL-BCZT structures at four different ceramic loadings (0, 10, 20, 30 wt%). For the examination of material's capacity to handle extremely high contamination, the composites are exposed to a high inoculum of bacteria (Escherichia coli ATCC 25922) ≈70% of E. coli degradation is recorded at the end of 15 min without any external intervention. The surface selective bacterial degradation can be attributed to the generated reactive oxygen species, the large surface area of the porous samples and polymer matrix's hydrophobic nature, behavior which can be reflected in the composites with 30 wt% of BCZT loading exhibiting the best antimicrobial performance among the other state-of-the-art ferroelectrics. Overall, these results indicate that the poled composites have a great potential as antimicrobial materials and surfaces.

Original languageEnglish
Article number2202127
JournalAdvanced Materials Technologies
Volume8
Issue number7
DOIs
Publication statusPublished - 11 Mar 2023

Bibliographical note

Funding Information:
Z.M.T.'s PhD research is fully supported by an Engineering and Physical Sciences Research Council (EPSRC)—DST Innovations Ltd joint studentship. R A.H.'s PhD studentship is funded by the Annette Trust and the EPSRC.

Publisher Copyright:
© 2023 The Authors. Advanced Materials Technologies published by Wiley-VCH GmbH.

Keywords

  • Antimicrobial ferroelectrics
  • PCL
  • BCZT
  • Piezoelectric scaffolds
  • 3D printing

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Industrial and Manufacturing Engineering

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