Mixed Graphite/Carbon Black Recycled PLA Conductive Additive Manufacturing Filament for the Electrochemical Detection of Oxalate.

ABSTRACT: Mixing of graphite and carbon black (CB) alongside recycled poly(lactic acid) and castor oil to create an electrically conductive additive manufacturing filament without the use of solvents is reported herein. The additively manufactured electrodes (AMEs) were electrochemically benchmarked against a commercial conductive filament and a bespoke filament utilizing only CB. The graphite/CB produced a heterogeneous rate constant, k⁰, of 1.26 (±0.23) × 10^-3 cm s^-1 and resistance of only 155 ± 15 Ω, compared to 0.30 (±0.03) × 10^-3 cm s^-1 and 768 ± 96 Ω for the commercial AME. Including graphite within the filament reduced the cost of printing each AME from £0.09, with the CB-only filament, to £0.05. The additive manufacturing filament

SUBMITTER: Arantes IVS 

PROVIDER: S-EPMC10568530 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature