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Highly tough, anti-fatigue and rapidly self-recoverable hydrogels reinforced with core–shell inorganic–organic hybrid latex particles

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Abstract

The introduction of SiO2 particles as crosslinking points into hydrogels has been recognized as a suitable way for toughening hydrogels, due to their versatile functionalization and large specific surface area. However, chemically linked SiO2 nanocomposite hydrogels often exhibited negligible fatigue resistance and poor self-recoverable properties due to the irreversible cleavage of covalent bonds. Here, we proposed a novel strategy to improve stretchability, fatigue resistance and self-recoverable properties of hydrogels by using SiO2-g-poly(butyl acrylate) core–shell inorganic–organic hybrid latex particles as hydrophobic crosslinking centers for hydrophobic association. The obtained hydrogel could distribute the surrounding applied stress by disentanglement of the hybrid latex particles from hydrophobic segments. Based on this strategy, the formulated hydrogels showed an excellent tensile strength of 1.48 MPa, superior stretchability of 2511% and remarkable toughness of 12.62 MJ m−3. Moreover, the hydrogels owned extraordinary anti-fatigue, rapid self-recovery and puncture resistance properties. Therefore, this strategy provided a novel pathway for developing advanced soft materials with potential applications in biomedical engineering, such as tendons, muscles, cartilages, etc.

Graphical abstract: Highly tough, anti-fatigue and rapidly self-recoverable hydrogels reinforced with core–shell inorganic–organic hybrid latex particles

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Publication details

The article was received on 26 Jun 2017, accepted on 26 Jul 2017 and first published on 26 Jul 2017


Article type: Paper
DOI: 10.1039/C7SM01253E
Citation: Soft Matter, 2017, Advance Article
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    Highly tough, anti-fatigue and rapidly self-recoverable hydrogels reinforced with core–shell inorganic–organic hybrid latex particles

    S. Xia, S. Song, X. Ren and G. Gao, Soft Matter, 2017, Advance Article , DOI: 10.1039/C7SM01253E

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