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Superelastic, soft, stress-healable, recyclable conductive materials

Title data

Milkin, Pavel ; Zhanbassynova, Ainur ; Ionov, Leonid:
Superelastic, soft, stress-healable, recyclable conductive materials.
In: Composite Structures. Vol. 327 (2024) . - 117709.
ISSN 1879-1085
DOI: https://doi.org/10.1016/j.compstruct.2023.117709

Project information

Project financing: Deutsche Forschungsgemeinschaft
DFG (Grant No IO 68/20-1, IO 68/21-1)

Abstract in another language

We report the design of materials with a unique combination of self-healing ability, electrical conductivity (8–150 Ohm·m), softness (G = 1 MPa), extremely low loss coefficient (tan δ ≈ 0.04) even at large deformations and linearity of resistivity dependence on strain in a broad range. The conductive material can bounce with very low energy dissipation at fast deformation, and it flows and self-heals at a large time scale and when sufficient stress is applied. The key to such properties is a combination of very stable interpenetrated networks formed by multiwalled carbon-nanotubes (MWCNT) filler and by viscoelastic polyborosiloxane (PBS) polymer matrix rendering relaxation processes and self-healing ability. We demonstrated the promise of the developed materials for the design of strain sensors with a very large linear regime and rubber-substitute as a protective coating or a sealing agent material.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Self-healing; Viscoelasticity; Silly-putty; Conductive composite; Low loss coefficient
Institutions of the University: Faculties > Faculty of Engineering Science > Professor Biofabrication > Professor Biofabrication - Univ.-Prof. Dr. Leonid Ionov
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 540 Chemistry
Date Deposited: 13 Nov 2023 14:06
Last Modified: 13 Nov 2023 14:06
URI: https://eref.uni-bayreuth.de/id/eprint/87651