How Water Can Affect Keratin: Hydration‐Driven Recovery of Bighorn Sheep ( Ovis Canadensis ) Horns
Abstract
Abstract Keratin is one of the most common structural biopolymers exhibiting high strength, toughness, and low density. It is found in various tissues such as hairs, feathers, horns, and hooves with various functionalities. For instance, horn keratin absorbs a large amount of energy during intraspecific fights. Keratinized tissues are permanent tissues because of their basic composition consisting of dead keratinized cells that are not able to remodel or regrow once broken or damaged. The lack of a self‐healing mechanism presents a problem for horns, as they are under continued high risk from mechanical damage. In the present work, it is shown for the first time that a combination of material architecture and a water‐assisted recovery mechanism, in the horn of bighorn sheep, endows them with shape and mechanical property recoverability after being subjected to severe compressive loading. Moreover, the effect of hydration is unraveled, on the material molecular structure and mechanical behavior, by means of synchrotron wide angle X‐ray diffraction, Fourier transform infrared spectroscopy, nanoindentation, and in situ and ex situ tensile tests. The recovery and remodeling mechanism is anisotropic and quite distinct to the self‐healing of living tissue such as bones.
- Authors:
-
- Materials Science and Engineering Program University of California San Diego La Jolla CA USA
- Theoretical and Applied Mechanics Program Northwestern University Evanston IL USA
- Department of NanoEngineering University of California San Diego, La Jolla CA USA
- Department of Chemical and Environment Engineering University of California Riverside CA USA
- Department of Materials Science and Engineering University of California Berkeley CA USA
- Theoretical and Applied Mechanics Program Northwestern University Evanston IL USA, Department of Mechanical Engineering Northwestern University Evanston IL USA
- Materials Science and Engineering Program University of California San Diego La Jolla CA USA, Department of Mechanical and Aerospace Engineering University of California San Diego La Jolla CA USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1510092
- Grant/Contract Number:
- DE‐AC02‐05CH11231
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Advanced Functional Materials
- Additional Journal Information:
- Journal Name: Advanced Functional Materials Journal Volume: 29 Journal Issue: 27; Journal ID: ISSN 1616-301X
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Huang, Wei, Zaheri, Alireza, Yang, Wen, Kisailus, David, Ritchie, Robert O., Espinosa, Horacio, and McKittrick, Joanna. How Water Can Affect Keratin: Hydration‐Driven Recovery of Bighorn Sheep ( Ovis Canadensis ) Horns. Germany: N. p., 2019.
Web. doi:10.1002/adfm.201901077.
Huang, Wei, Zaheri, Alireza, Yang, Wen, Kisailus, David, Ritchie, Robert O., Espinosa, Horacio, & McKittrick, Joanna. How Water Can Affect Keratin: Hydration‐Driven Recovery of Bighorn Sheep ( Ovis Canadensis ) Horns. Germany. https://doi.org/10.1002/adfm.201901077
Huang, Wei, Zaheri, Alireza, Yang, Wen, Kisailus, David, Ritchie, Robert O., Espinosa, Horacio, and McKittrick, Joanna. Mon .
"How Water Can Affect Keratin: Hydration‐Driven Recovery of Bighorn Sheep ( Ovis Canadensis ) Horns". Germany. https://doi.org/10.1002/adfm.201901077.
@article{osti_1510092,
title = {How Water Can Affect Keratin: Hydration‐Driven Recovery of Bighorn Sheep ( Ovis Canadensis ) Horns},
author = {Huang, Wei and Zaheri, Alireza and Yang, Wen and Kisailus, David and Ritchie, Robert O. and Espinosa, Horacio and McKittrick, Joanna},
abstractNote = {Abstract Keratin is one of the most common structural biopolymers exhibiting high strength, toughness, and low density. It is found in various tissues such as hairs, feathers, horns, and hooves with various functionalities. For instance, horn keratin absorbs a large amount of energy during intraspecific fights. Keratinized tissues are permanent tissues because of their basic composition consisting of dead keratinized cells that are not able to remodel or regrow once broken or damaged. The lack of a self‐healing mechanism presents a problem for horns, as they are under continued high risk from mechanical damage. In the present work, it is shown for the first time that a combination of material architecture and a water‐assisted recovery mechanism, in the horn of bighorn sheep, endows them with shape and mechanical property recoverability after being subjected to severe compressive loading. Moreover, the effect of hydration is unraveled, on the material molecular structure and mechanical behavior, by means of synchrotron wide angle X‐ray diffraction, Fourier transform infrared spectroscopy, nanoindentation, and in situ and ex situ tensile tests. The recovery and remodeling mechanism is anisotropic and quite distinct to the self‐healing of living tissue such as bones.},
doi = {10.1002/adfm.201901077},
journal = {Advanced Functional Materials},
number = 27,
volume = 29,
place = {Germany},
year = {Mon Apr 29 00:00:00 EDT 2019},
month = {Mon Apr 29 00:00:00 EDT 2019}
}
https://doi.org/10.1002/adfm.201901077
Web of Science
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