Fabrication of Coaxial Wet‐Spun Graphene–Chitosan Biofibers

Mirabedini, Azadehsadat; Foroughi, Javad; Thompson, Brianna C.; Wallace, Gordon G.

doi:10.1002/adem.201500201

Cited by 38 publications

(35 citation statements)

References 62 publications

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“…Polymers with hydroxyl groups or oxygen groups, such as PVA, CS, HPC, poly(acrylic acid), polydopamine (PDA), poly( N ‐isopropyl acrylamide) (PNIPAM), and poly(methyl methacrylate)(PMMA), are good choices for forming hydrogen bonding with adjacent GO nanosheets in the BGBNs. For example, Putz et al compared the effect of hydrogen bonding on the mechanical properties of BGBNs with polymers of PVA and PMMA (designated as GO‐PVA, and GO‐PMMA).…”

Section: Bioinspired Graphene‐based Nanocompositesmentioning

confidence: 99%

Bioinspired Graphene‐Based Nanocomposites and Their Application in Flexible Energy Devices

et al. 2016

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Graphene is the strongest and stiffest material ever identified and the best electrical conductor known to date, making it an ideal candidate for constructing nanocomposites used in flexible energy devices. However, it remains a great challenge to assemble graphene nanosheets into macro-sized high-performance nanocomposites in practical applications of flexible energy devices using traditional approaches. Nacre, the gold standard for biomimicry, provides an excellent example and guideline for assembling two-dimensional nanosheets into high-performance nanocomposites. This review summarizes recent research on the bioinspired graphene-based nanocomposites (BGBNs), and discusses different bioinspired assembly strategies for constructing integrated high-strength and -toughness graphene-based nanocomposites through various synergistic effects. Fundamental properties of graphene-based nanocomposites, such as strength, toughness, and electrical conductivities, are highlighted. Applications of the BGBNs in flexible energy devices, as well as potential challenges, are addressed. Inspired from the past work done by the community a roadmap for the future of the BGBNs in flexible energy device applications is depicted.

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Section: Bioinspired Graphene‐based Nanocompositesmentioning

confidence: 99%

Bioinspired Graphene‐Based Nanocomposites and Their Application in Flexible Energy Devices

et al. 2016

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“…Spring‐like NWs‐assembled superlattice was gradually straightened. In the integrated scattering profile (Figure k) derived from the SAXS, the intensity of the peaks obviously increased, which further demonstrated the enhancement of the orientation of the NWs with strain increased 5b,7e,11. In essence, the mechanical properties of the NW fibers mainly came from the sub‐1 nm diameters, high aspect ratio, and good alignment of the NWs.…”

Section: Resultsmentioning

confidence: 88%

“…As to the fabrication method, wet‐spinning is a kind of powerful technique to process NWs and the compositions of the spinning dope and coagulation bath, flow rate etc. have great impact on the fibers fabricated, because they will influence the injection stress, shear force, and solvent exchange . The polymer chains‐like sub‐1 nm NWs should be able to be processed into rather stretchable and flexible materials via wet‐spinning method by properly conducting the spinning dope and flow field.…”

Section: Introductionmentioning

confidence: 99%

Highly Flexible and Stretchable Nanowire Superlattice Fibers Achieved by Spring‐Like Structure of Sub‐1 nm Nanowires

Zhang

Lin

Yang

et al. 2019

Adv Funct Materials

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Conventional inorganic nanowire (NW) fibers are usually not stretchable and elastic, which may limit their practical applications. Inspired by the similarity between inorganic sub‐1 nm NWs and polymer chains in dimension, and helical spring‐like structure of cellulose in cherry bark, highly flexible and stretchable NW superlattice fibers composed of sub‐1 nm GdOOH NWs are fabricated. The NW fibers could be twined, bent, twisted, and tied without any damage. When the strain is less than 10%, the fibers present elastic deformation. The elongation at break of the fibers usually reaches ≈40–50% and the highest elongation could reach ≈86%. Excellent flexibility and stretchability of the NW fibers are attributed to the well‐aligned spring‐like NWs assembled superlattice, which are demonstrated by scanning electron microscopy tests, synchrotron small‐angle X‐ray scattering, and obvious birefringence. Moreover, NW‐nanoparticle (NP) fibers are fabricated, inspired by inorganic nanoparticle–reinforced polymers. The strength is improved compared with the NW fibers. Based on this work, it is possible to fabricate multifunctional, flexible, and stretchable inorganic NW materials composed of different inorganic sub‐1 nm NWs, which may be useful in practical applications.

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“…It has the ability to support the attachment and migration of osteoblast cells and enhances the formation of mineralized bone matrix. [54][55][56] GO/chitosan nanocomposites were prepared in the form of films, nacre-like structures, 3D porous scaffolds, and hydrogels.…”

Section: Natural Polymersmentioning

confidence: 99%

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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Fabrication of Coaxial Wet‐Spun Graphene–Chitosan Biofibers

Cited by 38 publications

References 62 publications

Bioinspired Graphene‐Based Nanocomposites and Their Application in Flexible Energy Devices

Bioinspired Graphene‐Based Nanocomposites and Their Application in Flexible Energy Devices

Highly Flexible and Stretchable Nanowire Superlattice Fibers Achieved by Spring‐Like Structure of Sub‐1 nm Nanowires

Graphene Oxide/Polymer‐Based Biomaterials

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