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URN to cite this document: urn:nbn:de:bvb:703-epub-6687-6
Title data
Milkin, Pavel ; Danzer, Michael A. ; Ionov, Leonid:
Self-Healing and Electrical Properties of Viscoelastic Polymer-Carbon Blends.
In: Macromolecular Rapid Communications.
Vol. 43
(2022)
Issue 19
.
- No. 2200307.
ISSN 1521-3927
DOI der Verlagsversion: https://doi.org/10.1002/marc.202200307
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Project information
| Project financing: |
Deutsche Forschungsgemeinschaft Grant No IO 68/20-1, IO 68/21-1 |
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Abstract
Self-healing polymer-carbon composites are seen as promising materials for future electronic devices, which must be able to restore not only their structural integrity but also electrical performance after cracking and wear. Despite multiple reports about self-healing conductive elements, there is a lack of a broad fundamental understanding of correlation between viscoelasticity of such composites, their electrical properties, and self-healing of their mechanical as well as electrical properties. Here we report thorough investigation of electromechanical properties of blends of carbon black as conductive filler and viscoelastic polymers (polydimethylsiloxanes and polyborosiloxane) with different relaxation times as matrices. We show that behavior of composites depends strongly on the viscoelastic properties of polymers. Low molecular polymer composite possesses high conductivity due to strong filler network formation, quick electrical and mechanical properties restoration, but for this we sacrifice the ability to flow and ductility at large deformation (material is brittle). In contrary, high relaxation time polymer composite behaves elastically on small time and flows at large time scale due to weak filler network and can heal. However, the electrical properties are worse than that of carbon and viscous polymer and degrade with time.
Further data
| Item Type: | Article in a journal |
|---|---|
| Keywords: | self-healing; polyborosiloxane; silly-putty; polydimethylsiloxane; carbon black; carbon-based materials; self-healing electrodes |
| DDC Subjects: | 500 Science > 530 Physics 500 Science > 540 Chemistry 600 Technology, medicine, applied sciences > 600 Technology |
| Institutions of the University: | Faculties > Faculty of Engineering Science > Professor Biofabrication > Professor Biofabrication - Univ.-Prof. Dr. Leonid Ionov Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Professor Biofabrication |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-6687-6 |
| Date Deposited: | 04 Oct 2022 07:30 |
| Last Modified: | 13 Oct 2022 08:33 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/6687 |
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