arXiv 2106.034602021-06-07cond-mat.soft

Spider silks mechanics: predicting humidity and temperature effects

Giuseppe Puglisi, Domenico De Tommasi, Vincenzo Fazio, Nicola Maria Pugno

英文摘要：

We deduce a microstructure inspired model for humidity and temperature effects on the mechanical response of spider silks, modelled 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 configuration 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

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