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Foundation of the Outstanding Toughness in Biomimetic and Natural Spider Silk

Titelangaben

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. Bd. 18 (2017) Heft 12 . - S. 3954-3962.
ISSN 1526-4602
DOI: https://doi.org/10.1021/acs.biomac.7b00990

Abstract

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.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: Biomimetic; Natural Spider Silk; recombinant fibers; spectroscopy; x-ray scattering; biomimetic fibres
Institutionen der Universität: Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Biomaterialien
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Biomaterialien > Lehrstuhl Biomaterialien - Univ.-Prof. Dr. Thomas Scheibel
Profilfelder
Profilfelder > Advanced Fields
Profilfelder > Advanced Fields > Polymer- und Kolloidforschung
Profilfelder > Advanced Fields > Neue Materialien
Profilfelder > Advanced Fields > Molekulare Biowissenschaften
Profilfelder > Emerging Fields
Profilfelder > Emerging Fields > Lebensmittel- und Gesundheitswissenschaften
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Forschungseinrichtungen > Forschungszentren > Bayreuther Materialzentrum - BayMAT
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 05 Jan 2018 07:57
Letzte Änderung: 05 Jan 2018 07:57
URI: https://eref.uni-bayreuth.de/id/eprint/41542