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Mechanical characterization and modeling of sponge-reinforced hydrogel composites under compression

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Abstract

Load-bearing applications of hydrogels call for materials with excellent mechanical properties. Despite the considerable progress in developing tough hydrogels, there is still a requirement to prepare high-performance hydrogels using simple strategies. In this paper, a sponge-reinforced hydrogel composite is synthesized by combining poly(acrylamide) (PAAm) hydrogel and polyurethane (PU) sponge. Uniaxial compressive testing of the hydrogel composites reveals that both the compressive modulus and the strength of the hydrogel composites are much higher than those of the PAAm hydrogel or sponge. In order to predict the compressive modulus of the hydrogel composite, we develop a theoretical model that is validated by experiments and numerical simulations. The present work may guide the design and manufacture of hydrogel-based composite materials, especially for biomaterial scaffolds and soft transducers.

Graphical abstract: Mechanical characterization and modeling of sponge-reinforced hydrogel composites under compression

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Publication details

The article was received on 01 Apr 2018, accepted on 23 Apr 2018 and first published on 24 Apr 2018


Article type: Paper
DOI: 10.1039/C8SM00678D
Citation: Soft Matter, 2018, Advance Article
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    Mechanical characterization and modeling of sponge-reinforced hydrogel composites under compression

    L. Wu, G. Mao, G. Nian, Y. Xiang, J. Qian and S. Qu, Soft Matter, 2018, Advance Article , DOI: 10.1039/C8SM00678D

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