We deduce a microstructure inspired model for humidity and temperature effects on the mechanical response of spider silks, modeled as a composite material with a hard crystalline and a soft amorphous region. Water molecules decrease the percentage of crosslinks in the softer region inducing a variation of natural length of the macromolecules. The resulting kinematic incompatibility between the regions crucially influences the final mechanical response. We demonstrate the predictivity of the model by quantitatively reproducing the experimentally observed behavior.

Spider Silks Mechanics: Predicting Humidity and Temperature Effects / Fazio, Vincenzo; De Tommasi, Domenico; Pugno, Nicola; Puglisi, Giuseppe. - In: JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS. - ISSN 0022-5096. - 2022, 164:(2022), pp. 1-11. [10.1016/j.jmps.2022.104857]

Spider Silks Mechanics: Predicting Humidity and Temperature Effects

Nicola Maria Pugno
Co-ultimo
;
2022-01-01

Abstract

We deduce a microstructure inspired model for humidity and temperature effects on the mechanical response of spider silks, modeled as a composite material with a hard crystalline and a soft amorphous region. Water molecules decrease the percentage of crosslinks in the softer region inducing a variation of natural length of the macromolecules. The resulting kinematic incompatibility between the regions crucially influences the final mechanical response. We demonstrate the predictivity of the model by quantitatively reproducing the experimentally observed behavior.
2022
Fazio, Vincenzo; De Tommasi, Domenico; Pugno, Nicola; Puglisi, Giuseppe
Spider Silks Mechanics: Predicting Humidity and Temperature Effects / Fazio, Vincenzo; De Tommasi, Domenico; Pugno, Nicola; Puglisi, Giuseppe. - In: JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS. - ISSN 0022-5096. - 2022, 164:(2022), pp. 1-11. [10.1016/j.jmps.2022.104857]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/361292
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