Journal article
High strength in combination with high toughness in robust and sustainable polymeric materials.
- Liao X Macromolecular Chemistry and Bavarian Polymer Institute, University of Bayreuth, 95440 Bayreuth, Germany.
- Dulle M JCNS-1/ICS-1, Forschungszentrum Jülich, 52425 Jülich, Germany.
- de Souza E Silva JM Institute of Physics, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Straße 4, 06120 Halle (Saale), Germany.
- Wehrspohn RB Institute of Physics, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Straße 4, 06120 Halle (Saale), Germany.
- Agarwal S Macromolecular Chemistry and Bavarian Polymer Institute, University of Bayreuth, 95440 Bayreuth, Germany.
- Förster S JCNS-1/ICS-1, Forschungszentrum Jülich, 52425 Jülich, Germany.
- Hou H College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China.
- Smith P ETH Zürich, HCP F41.2, 8093 Zürich, Switzerland.
- Greiner A Macromolecular Chemistry and Bavarian Polymer Institute, University of Bayreuth, 95440 Bayreuth, Germany. greiner@uni-bayreuth.de.
- 2019-12-14
Published in:
- Science (New York, N.Y.). - 2019
English
In materials science, there is an intrinsic conflict between high strength and high toughness, which can be resolved for different materials only through the use of innovative design principles. Advanced materials must be highly resistant to both deformation and fracture. We overcome this conflict in man-made polymer fibers and show multifibrillar polyacrylonitrile yarn with a toughness of 137 ± 21 joules per gram in combination with a tensile strength of 1236 ± 40 megapascals. The nearly perfect uniaxial orientation of the fibrils, annealing under tension in the presence of linking molecules, is essential for the yarn's notable mechanical properties. This underlying principle can be used to create similar strong and tough fibers from other commodity polymers in the future and can be used in a variety of applications in areas such as biomedicine, satellite technology, textiles, aircrafts, and automobiles.
- Language
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- English
- Open access status
- closed
- Identifiers
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- DOI 10.1126/science.aay9033
- PMID 31831668
- Persistent URL
- https://folia.unifr.ch/global/documents/220137
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