One reaction to make highly stretchable or extremely soft silicone elastomers from easily available materials

Pengpeng Hu, Jeppe Madsen and Anne Ladegaard Skov ()
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Pengpeng Hu: Technical University of Denmark, DTU, Søltofts Plads
Jeppe Madsen: Technical University of Denmark, DTU, Søltofts Plads
Anne Ladegaard Skov: Technical University of Denmark, DTU, Søltofts Plads

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract Highly stretchable, soft silicone elastomers are of great interest for the fabrication of stretchable, soft devices. However, there is a lack of available chemistries capable of efficiently preparing silicone elastomers with superior stretchability and softness. Here we show an easy curing reaction to prepare silicone elastomers, in which a platinum-catalyzed reaction of telechelic/multi-hydrosilane (Si–H) functional polydimethylsiloxane (PDMS) in the presence of oxygen and water leads to slow crosslinking. This curing chemistry allows versatile tailoring of elastomer properties, which exceed their intrinsic limitations. Specifically, both highly stretchable silicone elastomers (maximum strain of 2800%) and extremely soft silicone elastomers (lowest shear modulus of 1.2 kPa) are prepared by creating highly entangled elastomers and bottle-brush elastomers from commercial precursor polymers, respectively.

Date: 2022
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DOI: 10.1038/s41467-022-28015-2

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