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Issue 24, 2020
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Hydrogels toughened by biominerals providing energy-dissipative sacrificial bonds

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Abstract

Inspired by bone tissues, we mineralized low crystalline hydroxyapatite (HAp) particles in double network (DN) hydrogels, and we observed that the HAp minerals toughen the gels. The contribution of dissipated energy from HAp minerals was over 500% higher than that from the polymer during tensile deformation. We elucidated that the amorphous parts in the HAp minerals break at deformation, acting as energy-dissipative sacrificial bonds. This result implies that not only brittle polymer networks but also minerals can provide sacrificial bonds to toughen soft materials.

Graphical abstract: Hydrogels toughened by biominerals providing energy-dissipative sacrificial bonds

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Article information


Submitted
30 Mar 2020
Accepted
06 May 2020
First published
07 May 2020

J. Mater. Chem. B, 2020,8, 5184-5188
Article type
Communication

Hydrogels toughened by biominerals providing energy-dissipative sacrificial bonds

K. Fukao, K. Tanaka, R. Kiyama, T. Nonoyama and J. P. Gong, J. Mater. Chem. B, 2020, 8, 5184
DOI: 10.1039/D0TB00833H

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