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Foundation of the Outstanding Toughness in Biomimetic and Natural Spider Silk

Title data

Anton, Arthur Markus ; Heidebrecht, Aniela ; Mahmood, Nasir ; Beiner, Mario ; Scheibel, Thomas ; Kremer, Friedrich:
Foundation of the Outstanding Toughness in Biomimetic and Natural Spider Silk.
In: Biomacromolecules. Vol. 18 (2017) Issue 12 . - pp. 3954-3962.
ISSN 1526-4602
DOI: https://doi.org/10.1021/acs.biomac.7b00990

Abstract in another language

Spider dragline silk is distinguished through the highest toughness of all natural as well as artificial fiber materials. To unravel the toughness’s molecular foundation and to enable manufacturing biomimetic analogues, we investigated the morphological and functional structure of recombinant fibers, which exhibit toughness similar to that of the natural template, on the molecular scale by means of vibrational spectroscopy and on the mesoscale by X-ray scattering. Whereas the former was used to identify protein
secondary structures and their alignment in the natural as well as artificial silks, the latter revealed nanometer-sized crystallites on the higher structural level. Furthermore, a spectral red shift of a crystal-specific absorption band demonstrated that macroscopically applied stress is directly transferred to the molecular scale, where it is finally dissipated. Concerning this feature, both the natural as well as the biomimetic fibers are almost indistinguishable, giving rise to the toughness of both fiber materials.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Biomimetic; Natural Spider Silk; recombinant fibers; spectroscopy; x-ray scattering; biomimetic fibres
Institutions of the University: Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Biomaterials
Faculties > Faculty of Engineering Science > Chair Biomaterials > Chair Biomaterials - Univ.-Prof. Dr. Thomas Scheibel
Profile Fields
Profile Fields > Advanced Fields
Profile Fields > Advanced Fields > Polymer and Colloid Science
Profile Fields > Advanced Fields > Advanced Materials
Profile Fields > Advanced Fields > Molecular Biosciences
Profile Fields > Emerging Fields
Profile Fields > Emerging Fields > Food and Health Sciences
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 05 Jan 2018 07:57
Last Modified: 05 Jan 2018 07:57
URI: https://eref.uni-bayreuth.de/id/eprint/41542