| Title |
Circular Economy Electrochemistry: Recycling Old Mixed Material Additively Manufactured Sensors into New Electroanalytical Sensing Platforms |
| ID_Doc |
28735 |
| Authors |
Crapnell, RD; Sigley, E; Williams, RJ; Brine, T; Ferrari, AGM; Kalinke, C; Janegitz, BC; Bonacin, JA; Banks, CE |
| Title |
Circular Economy Electrochemistry: Recycling Old Mixed Material Additively Manufactured Sensors into New Electroanalytical Sensing Platforms |
| Year |
2023 |
| Published |
Acs Sustainable Chemistry & Engineering, 11.0, 24 |
| Abstract |
Old additively manufactured one-shotsensing platforms arerecycled into two new filaments for 3D printing: one conductive andone non-conductive. These filaments are used to print a fully recycledcell, in an identical design, that matches the original cell in electroanalyticalperformance toward the detection of acetaminophen. This feeds intothe concept of an electrochemistry circular economy. Recycling used mixedmaterial additively manufactured electroanalyticalsensors into new 3D-printing filaments (both conductive and non-conductive)for the production of new sensors is reported herein. Additively manufactured(3D-printed) sensing platforms were transformed into a non-conductivefilament for fused filament fabrication through four different methodologies(granulation, ball-milling, solvent mixing, and thermal mixing) withthermal mixing producing the best quality filament, as evidenced bythe improved dispersion of fillers throughout the composite. Utilizingthis thermal mixing methodology, and without supplementation withthe virgin polymer, the filament was able to be cycled twice beforefailure. This was then used to process old sensors into an electricallyconductive filament through the addition of carbon black into thethermal mixing process. Both recycled filaments (conductive and non-conductive)were utilized to produce a new electroanalytical sensing platform,which was tested for the cell's original application of acetaminophendetermination. The fully recycled cell matched the electrochemicaland electroanalytical performance of the original sensing platform,achieving a sensitivity of 22.4 +/- 0.2 mu A mu M-1, a limit of detection of 3.2 +/- 0.8 mu M, and a recoveryvalue of 95 +/- 5% when tested using a real pharmaceutical sample.This study represents a paradigm shift in how sustainability and recyclingcan be utilized within additively manufactured electrochemistry towardpromoting circular economy electrochemistry. |
| PDF |
https://pubs.acs.org/doi/pdf/10.1021/acssuschemeng.3c02052
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