A Janus Molecule for Screen-Printable Conductive Carbon Ink for Composites with Superior Stretchability

Peter Zalar; Lucia Rubino; Fatima Margani; Gerwin Kirchner; Daniele Raiteri; Maurizio Stefano Galimberti; Vincenzina Barbera

doi:10.1002/adem.202300706

A Janus Molecule for Screen-Printable Conductive Carbon Ink for Composites with Superior Stretchability

Peter Zalar (Corresponding author), Lucia Rubino, Fatima Margani, Gerwin Kirchner, Daniele Raiteri, Maurizio Stefano Galimberti (Corresponding author), Vincenzina Barbera (Corresponding author)

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Abstract

Inspired by decades of research in the compatibilization of fillers into elastomeric composites for high-performance materials, a novel polyurethane-based stretchable carbon ink is created by taking advantage of a Janus molecule, 2-(2,5-dimethyl-1H-pyrrol-1-yl)propane-1,3-diol (serinol pyrrole, SP). SP is used to functionalize the carbon and comonomer in the polymer phase. The use of SPs in both the organic and inorganic phases results in an improved interaction between the two phases. When printed, the functionalized material has a factor 1.5 lower resistance-strain dependence when compared to its unfunctionalized analogue. This behavior is superior to commercially available carbon inks. To demonstrate the suitability of ink in an industrial application, an all-printed, elastomer-based force sensor is fabricated. This “pyrrole methodology” is scalable and broadly applicable, laying the foundation for the realization of printed functionalities with improved electromechanical performance.

Original language	English
Article number	2300706
Journal	Advanced Engineering Materials
Volume	25
Issue number	17
DOIs	https://doi.org/10.1002/adem.202300706
Publication status	Published - Sept 2023

Bibliographical note

Funding Information:
P.Z. and L.R. contributed equally to this work. This work was supported by the Electronic Components and Systems for European Leadership Joint Undertaking (ECSEL JU) in collaboration with the European Union's H2020 framework program (H2020/2014‐2020), under grant agreement H2020‐ECSEL‐2019‐IA‐876190 “Moore4Medical”.

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

Funding

P.Z. and L.R. contributed equally to this work. This work was supported by the Electronic Components and Systems for European Leadership Joint Undertaking (ECSEL JU) in collaboration with the European Union's H2020 framework program (H2020/2014‐2020), under grant agreement H2020‐ECSEL‐2019‐IA‐876190 “Moore4Medical”.

Keywords

electronic inks
polyurethane binders
printed electronics
pyrrole methodology
sp carbon allotropes
sustainable functionalization

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abstract = "Inspired by decades of research in the compatibilization of fillers into elastomeric composites for high-performance materials, a novel polyurethane-based stretchable carbon ink is created by taking advantage of a Janus molecule, 2-(2,5-dimethyl-1H-pyrrol-1-yl)propane-1,3-diol (serinol pyrrole, SP). SP is used to functionalize the carbon and comonomer in the polymer phase. The use of SPs in both the organic and inorganic phases results in an improved interaction between the two phases. When printed, the functionalized material has a factor 1.5 lower resistance-strain dependence when compared to its unfunctionalized analogue. This behavior is superior to commercially available carbon inks. To demonstrate the suitability of ink in an industrial application, an all-printed, elastomer-based force sensor is fabricated. This “pyrrole methodology” is scalable and broadly applicable, laying the foundation for the realization of printed functionalities with improved electromechanical performance.",

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A Janus Molecule for Screen-Printable Conductive Carbon Ink for Composites with Superior Stretchability

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