Recycled PETg embedded with graphene, multi-walled carbon nanotubes and carbon black for high-performance conductive additive manufacturing feedstock

Abstract

The first report of conductive recycled polyethylene terephthalate glycol (rPETg) for additive manufacturing and electrochemical applications is reported herein.

Electroanalysis overview: additive manufactured biosensors using fused filament fabrication

“…72 Clearly the majority of work on electrochemical biosensors produced through FFF involves the use of PLA based filaments, which have been see to have issues with solution ingress, 68 memory effects, and performance post sterilisation. 73 These issues need addressing for additive manufacturing electrochemistry to reach its full potential and we foresee significantly more research being published in this area in the coming years due to the synergy between additive manufacturing, electrochemistry and biosensors.…”

“…However, there are clear issues with using this polymer for electrochemical applications such as the ingress of solutions 68 and memory effects. 73 There has been the first publication of conductive recycled PETg recently, 73 which offers significantly different material properties to PLA, including greater chemical resistance and lower water ingress. Although this is the case, this PETg filament does not reach the same levels of conductivity seen for the bespoke PLA filaments reported.…”