Self-Reducing Silver Ink on Polyurethane Elastomers for the Manufacture of Thin and Highly Stretchable Electrical Circuits
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In: Chemistry of materials, Vol. 33.2021, No. 8, 22.03.2021, p. 2742-2755.
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TY - JOUR
T1 - Self-Reducing Silver Ink on Polyurethane Elastomers for the Manufacture of Thin and Highly Stretchable Electrical Circuits
AU - Krawczyk, Krzysztof K.
AU - Groten, Jonas
AU - Glushko, Oleksandr
AU - Krivec, Matic
AU - Frühwirth, Matthias
AU - Schulz, Gernot
AU - Wolf, Christian
AU - Hartmann, Delara
AU - Moser, Maximilian
AU - Cordill, Megan J.
AU - Stadlober, Barbara
AU - Griesser, Thomas
N1 - Publisher Copyright: © 2021 American Chemical Society.
PY - 2021/3/22
Y1 - 2021/3/22
N2 - Stretchable conductive films were obtained by screen printing and thermal treatment of a homogenous ink comprising a thermally reducible silver formate complex, an acrylate monomer, and a radical initiator. In the curing process, both the filler nanoparticles and the polymer matrix are generated in situ, at temperatures as low as 100 °C. The obtained conductors, consisting of percolated silver nanoparticles embedded in a polymeric matrix, typically show a resistivity of (2–4) × 10–5 Ω·m. When applied on an elastomeric substrate, the composite is stretchable up to 200% with very low R/R0 values, which is unprecedented for stretchable silver composite inks. Quasi-in situ confocal laser scanning microscopy of the strained samples revealed an initial fracture strain above 40%, which is unusually high for metal–nanoparticle films. The described system was compared to some commercial stretchable screen-printing inks and proved superior with regard to both R/R0 and resistance to cyclic tensile loading.
AB - Stretchable conductive films were obtained by screen printing and thermal treatment of a homogenous ink comprising a thermally reducible silver formate complex, an acrylate monomer, and a radical initiator. In the curing process, both the filler nanoparticles and the polymer matrix are generated in situ, at temperatures as low as 100 °C. The obtained conductors, consisting of percolated silver nanoparticles embedded in a polymeric matrix, typically show a resistivity of (2–4) × 10–5 Ω·m. When applied on an elastomeric substrate, the composite is stretchable up to 200% with very low R/R0 values, which is unprecedented for stretchable silver composite inks. Quasi-in situ confocal laser scanning microscopy of the strained samples revealed an initial fracture strain above 40%, which is unusually high for metal–nanoparticle films. The described system was compared to some commercial stretchable screen-printing inks and proved superior with regard to both R/R0 and resistance to cyclic tensile loading.
UR - http://www.scopus.com/inward/record.url?scp=85104934731&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.0c04025
DO - 10.1021/acs.chemmater.0c04025
M3 - Article
AN - SCOPUS:85104934731
VL - 33.2021
SP - 2742
EP - 2755
JO - Chemistry of materials
JF - Chemistry of materials
SN - 0897-4756
IS - 8
ER -
