Design of a smart sensor mesh for the measurement of pH in ostomy applications

Anna McLister, Charnete Casimero, Aaron McConville, Charlotte Taylor, Claire Lawrence, Robert Smith, Ashish Mathur, J Davis

Research output: Contribution to journalArticle

1 Citation (Scopus)
3 Downloads (Pure)

Abstract

A carbon-loaded polyethylene film was modified through a combination of laser ablation and electrochemical anodisation to yield a mechanically flexible yet electroanalytically sensitive mesh. A custom flavin derivative bearing a pendant phenol substituent was electropolymerised onto the substrate, and its electrochemical properties were investigated. The reversible flavin electrochemistry was retained (Ep = −0.374 V vs. Ag/AgCl, pH 7), and the peak position was found to shift by 60 mV/pH over a range covering pH 2.55 to pH 8.12. The stability of the resulting composite has been evaluated, and the analytical applicability towards the voltammetric measurement of pH in human urine was critically assessed.
Original languageEnglish
Pages (from-to)10410-10419
Number of pages10
JournalJournal of Materials Science
Volume54
Issue number14
Early online date15 Apr 2019
DOIs
Publication statusPublished - 30 Jul 2019

Keywords

  • Ostomy
  • Stoma
  • polyethylene
  • electrode
  • sensor
  • pH

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