Issue 24, 2020

Hydrogels toughened by biominerals providing energy-dissipative sacrificial bonds

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

Supplementary files

Article information

Article type
Communication
Submitted
30 Marts 2020
Accepted
06 Maijs 2020
First published
07 Maijs 2020

J. Mater. Chem. B, 2020,8, 5184-5188

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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