Preparation and properties of graphene oxide-regenerated cellulose/polyvinyl alcohol hydrogel with pH-sensitive behavior

Xie, Ruzhen; Ren, Penggang; Hui, Jian; Ren, Fangfang; Ren, Liang; Sun, Zhenfan

doi:10.1016/j.carbpol.2015.11.042

Cited by 88 publications

(41 citation statements)

References 33 publications

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“…[29][30][31][32] Ruthenium complexes are widely used in material design because of their unique electrochemical and physical properties. [33][34][35] Xu and coworkers have demonstrated that ruthenium complexes can be used as redox responsive linkers to engineer redox-responsive hydrogels.…”

Section: Resultsmentioning

confidence: 99%

Electroresponsive Supramolecular Graphene Oxide Hydrogels for Active Bacteria Adsorption and Removal

Xue¹,

Qin²,

Wu³

et al. 2016

ACS Appl. Mater. Interfaces

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Bacteria contamination in drinking water and medical products can cause severe health problems. However, currently available sterilization methods, mainly based on the size-exclusion mechanism, are typically slow and require the entire contaminated water to pass through the filter. Here, we present an electroresponsive hydrogel based approach for bacteria adsorption and removal. We successfully engineered a series of graphene oxide hydrogels using redox-active ruthenium complexes as noncovalent cross-linkers. The resulting hydrogels can reversibly switch their physical properties in response to the applied electric field along with the changes of oxidation states of the ruthenium ions. The hydrogels display strong bacteria adsorbing capability. A hydrogel of 1 cm(3) can adsorb a maximum of 1 × 10(8) E. coli. The adsorbed bacteria in the hydrogels can then be inactivated by a high voltage electric pulse and removed from the hydrogels subsequently. Owing to the high bacteria removal rate, reusability, and low production cost, these hydrogels represent promising candidates for the emergent sterilization of medical products or large-scale purification of drinking water.

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Section: Resultsmentioning

confidence: 99%

Electroresponsive Supramolecular Graphene Oxide Hydrogels for Active Bacteria Adsorption and Removal

Xue¹,

Qin²,

Wu³

et al. 2016

ACS Appl. Mater. Interfaces

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“…1.2% GO/polyacrylamide hydrogel for peripheral nerve regeneration (tension) [46] 38 MPa N/A N/A Skin [152] 1-30 MPa 15-150 MPa 30-115 1 wt% GO/PVA for load-bearing tissue substitutes (compression) [135] 17 MPa 60 kPa N/A 0.1 wt% GO/PVA (compression) [38] 2.8 MPa N/A N/A 1 wt% GO/cellulose/PVA (tension) [39] 0.73 MPa N/A 240 1 mg ml À1 GO/carboxymethyl chitosan/KGM for wound dressing (compression) [48] 208 kPa 1.11 MPa N/A GO/polyacrylamide/agar (compression) [122] 332 kPa N/A 4600 2 mg ml À1 GO/GelMa hydrogel for cardiac patches (tension) [47] 977 kPa 24 kPa 55 1 mg ml À1 GO/gelatin hydrogel for muscle tissue engineering (rheometry measurement) [102] N/A 3.42 kPa N/A www.advancedsciencenews.com www.aem-journal.com engineering applications. The incorporation of GO in polymer was found to improve the physical and biological properties of the composites.…”

Section: Discussionmentioning

confidence: 99%

“…0.5-1.5 wt% GO /PVA [39] Hydrogel by freezethawing method N/A 1 wt% GO improved tensile strength and elongation at break 1 wt%GO/PLGA [32] ESM by electrospinning MSC Improves hydrophilicity, protein adsorption ability, adhesion, and proliferation of MSC and osteogenic differentiation 10 wt%GO/collagen [8] 3D porous structure by chemical crosslinking hMSC GO enhanced osteogenic differentiation.…”

Section: Natural Polymersmentioning

confidence: 99%

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Graphene Oxide/Polymer‐Based Biomaterials

2017

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Since its discovery in 2004, derivatives of graphene have been developed and heavily investigated in the field of tissue engineering. Among the most extensively studied forms of graphene, graphene oxide (GO), and GO/ polymer-based nanocomposites have attracted great attention in various forms such as films, 3D porous scaffolds, electrospun mats, hydrogels, and nacre-like structures. In this review, the most actively investigated GO/ polymer nanocomposites are presented and discussed, these nanocomposites are based on chitosan, cellulose, starch, alginate, gellan gum, poly(vinyl alcohol) (PVA), poly(acrylamide), poly(e-caprolactone) (PCL), poly(lactic acid) (PLLA), poly(lactide-co-glycolide) (PLGA), gelatin, collagen, and silk fibroin (SF). The biological and mechanical performance of such nanocomposites are comprehensively scrutinized and ongoing research questions are addressed. The analysis of the literature reveals overall the great potential of GO/ polymer nanocomposites in tissue engineering strategies and indicates also a series of challenges requiring further research efforts.

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“…Besides the above smart responsive hydrogels, there are also some reports on stimulus‐responsive polymer–GO hydrogel with good properties, including light‐responsiveness, pH‐responsiveness, etc. Chen and co‐workers used 2‐hydroxypropyl acrylate (HPA) and 1‐vinyl‐2‐pyrrolidinone (NVP) to prepare P(HPA‐ co ‐NVP)–GO nanocomposite hydrogel which corresponds to temperature, pH, electricity, and chemicals.…”

Section: Properties and Applications Of Polymer–graphene Hydrogelsmentioning

confidence: 99%

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

Pan

Liu

Gai

2017

Macro Materials & Eng

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Polymer hydrogels have attracted much attention due to their mechanical, biological, and physicochemical properties. Incorporation of functional material enlarges their applications. Graphene, as a promising additive, has received great attention due to its large specific surface area, ultrahigh conductivity, strong antioxidant, thermal stability, high thermal conductivity, and good mechanical properties. In this brief review, graphene‐containing polymer hydrogels with special properties are summarized including their preparations, properties, and applications. In addition, future perspectives of polymer hydrogels containing graphene are briefly discussed.

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Preparation and properties of graphene oxide-regenerated cellulose/polyvinyl alcohol hydrogel with pH-sensitive behavior

Cited by 88 publications

References 33 publications

Electroresponsive Supramolecular Graphene Oxide Hydrogels for Active Bacteria Adsorption and Removal

Electroresponsive Supramolecular Graphene Oxide Hydrogels for Active Bacteria Adsorption and Removal

Graphene Oxide/Polymer‐Based Biomaterials

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

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