Recent Progress of Graphene‐Containing Polymer Hydrogels: Preparations, Properties, and Applications

Pan, Chenguang; Liu, Libin; Gai, Guangjie

doi:10.1002/mame.201700184

Cited by 39 publications

(17 citation statements)

References 118 publications

(172 reference statements)

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“…Similar to electric fields, magnetic fields are clean and biocompatible even at clinically high field strengths. Thus, numerous examples of magnetically responsive hydrogels have been developed for various applications, including drug delivery and soft robots . Magnetically responsive NC gels could be prepared by the incorporation of magnetic NPs such as iron oxides (γ‐Fe 2 O 3 , Fe 3 O 4 ) into the hydrogel matrix.…”

Section: Properties Of Nanocomposite Hydrogelsmentioning

confidence: 99%

“…Carbon-based nanomaterials, such as CNTs and graphene, have been considered as ideal components to substantially improve the performance of NC gels due to their excellent multifunctionality, unique physicochemical and dimensional properties. [22,34] However, the fabrication of homogeneous, coherent, and transparent gels with pristine carbon nanomaterials is difficult because of the hydrophobic intrinsic property of carbon materials. Therefore, the poor interfacial compatibility between carbon materials and polymeric networks makes it difficult to form a strong coupling between the two components for a desirable architecture.…”

Section: Carbon-based Npsmentioning

confidence: 99%

“…Thus, numerous examples of magnetically responsive hydrogels have been developed for various applications, including drug delivery and soft robots. [22,96,113,114] Magnetically responsive NC gels could be prepared by the incorporation of magnetic NPs such as iron oxides (γ-Fe 2 O 3 , Fe 3 O 4 ) into the hydrogel matrix. These NPs usually need to be modified with ligands or wrapped in polymer nanospheres to enable cross-linking with a hydrogel matrix.…”

Section: Magnetically Responsive Nc Gelsmentioning

confidence: 99%

“…), metal or metal‐oxide NPs (gold [Au], silver [Ag], iron oxide [Fe 3 O 4 ], etc. ), carbon‐based nanomaterials (carbon nanotubes [CNTs] and graphene), and polymeric NPs (micelles, dendrimers, nanogels, etc. ), were successfully introduced into NC gel networks by in situ polymerization, in situ growth of the NPs, or physical mixing ( Figure ) .…”

Section: Introductionmentioning

confidence: 99%

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Nanoparticle–Polymer Synergies in Nanocomposite Hydrogels: From Design to Application

Chen

Hou

Ren

et al. 2018

Macromol. Rapid Commun.

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Hydrogels are an important class of soft materials with high water retention that exhibit intelligent and elastic properties and have promising applications in the fields of biomaterials, soft machines, and artificial tissue. However, the low mechanical strength and limited functions of traditional chemically cross-linked hydrogels restrict their further applications. Natural materials that consist of stiff and soft components exhibit high mechanical strength and functionality. Among artificial soft materials, nanocomposite hydrogels are analogous to these natural materials because of the synergistic effects of nanoparticle (NP) polymers in hydrogels construction. In this article, the structural design and properties of nanocomposite hydrogels are summarized. Furthermore, along with the development of nanocomposite hydrogel-based devices, the shaping and potential applications of hydrogel devices in recent years are highlighted. The influence of the interactions between NPs and polymers on the dispersion as well as the structural stability of nanocomposite hydrogels is discussed, and the novel stimuli-responsive properties induced by the synergies between functional NPs and polymeric networks are reviewed. Finally, recent progress in the preparation and applications of nanocomposite hydrogels is highlighted. Interest in this field is growing, and the future and prospects of nanocomposite hydrogels are also reviewed.

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Section: Properties Of Nanocomposite Hydrogelsmentioning

confidence: 99%

Section: Carbon-based Npsmentioning

confidence: 99%

Section: Magnetically Responsive Nc Gelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nanoparticle–Polymer Synergies in Nanocomposite Hydrogels: From Design to Application

Chen

Hou

Ren

et al. 2018

Macromol. Rapid Commun.

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“…Graphene, a two-dimensional carbon material of atomic thickness, is promising nanofiller for the fabrication of tough and electrically conductive hydrogels due to its high mechanical strength and good electrical conductivity. 9 To fabricate polymer composites, the most economical and efficient approach for the large scale production of graphene is chemical reduction of graphene oxide (GO). 10 Reduced graphene oxide (rGO) is obtained after the removal of most oxygenated groups in GO, and the properties of rGO are close to that of graphene.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of tough, self‐recoverable, and electrically conductive hydrogels byin situreduction of poly(acrylic acid) grafted graphene oxide in polyacrylamide hydrogel matrix

Wang

et al. 2019

J of Applied Polymer Sci

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Developing electrically conductive hydrogels with good electronic properties and excellent mechanical performance is significant to their potential applications. In this article, we present a strategy to fabricate tough, self‐recoverable and electrically conductive hydrogels containing reduced graphene oxide (rGO). Poly(acrylic acid) grafted graphene oxide (GO‐g‐PAA) was synthesized and incorporated into chemically crosslinked polyacrylamide (PAM) networks to obtain GO‐g‐PAA/PAM hydrogels, which were further treated with ascorbic acid solution at ambient temperature to give rGO‐g‐PAA/PAM hydrogels. The interfacial interaction between GO/rGO and hydrogel matrix was improved by reversible hydrogen bonds between the grafted PAA chains and PAM matrix. Consequently, both GO‐g‐PAA/PAM and rGO‐g‐PAA/PAM hydrogels exhibited improved tensile properties, excellent energy dissipation, and rapid self‐recovery. The in situ chemical reduction of GO‐g‐PAA in hydrogel matrix endowed rGO‐g‐PAA/PAM hydrogels with satisfactory electrical conductivity and obvious resistance change upon stretching. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48781.

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Electroconductive, Adhesive, Non‐Swelling, and Viscoelastic Hydrogels for Bioelectronics

et al. 2022

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As a new class of materials, implantable flexible electrical conductors have recently been developed and applied to bioelectronics. An ideal electrical conductor requires high conductivity, tissue‐like mechanical properties, low toxicity, reliable adhesion to biological tissues, and the ability to maintain its shape in wet physiological environments. Despite significant advances, electrical conductors that satisfy all these requirements are insufficient. Herein, a facile method for manufacturing a new conductive hydrogels through the simultaneous exfoliation of graphite and polymerization of zwitterionic monomers triggered by microwave irradiation is introduced. The mechanical properties of the obtained conductive hydrogel are similar to those of living tissue, which is ideal as a bionic adhesive for minimizing contact damage due to mechanical mismatches between hard electronics and soft tissues. Furthermore, it exhibits excellent adhesion performance, electrical conductivity, non‐swelling, and high conformability in water. Excellent biocompatibility of the hydrogel is confirmed through a cytotoxicity test using C2C12 cells, a biocompatibility test on rat tissues, and their histological analysis. The hydrogel is then implanted into the sciatic nerve of a rat and neuromodulation is demonstrated through low‐current electrical stimulation. This hydrogel demonstrates a tissue‐like extraneuronal electrode, which possesses high conformability to improve the tissue–electronics interfaces, promising next‐generation bioelectronics applications.

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Recent Progress of Graphene‐Containing Polymer Hydrogels: Preparations, Properties, and Applications

Cited by 39 publications

References 118 publications

Nanoparticle–Polymer Synergies in Nanocomposite Hydrogels: From Design to Application

Nanoparticle–Polymer Synergies in Nanocomposite Hydrogels: From Design to Application

Fabrication of tough, self‐recoverable, and electrically conductive hydrogels byin situreduction of poly(acrylic acid) grafted graphene oxide in polyacrylamide hydrogel matrix

Electroconductive, Adhesive, Non‐Swelling, and Viscoelastic Hydrogels for Bioelectronics

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