Surface modification effects on the tensile properties of functionalised graphene oxide epoxy films

Matsuura, Koji; Umahara, Yuki; Gotoh, Kazuma; Hoshijima, Yuko; Ishida, Hiroyuki

doi:10.1039/c8ra00252e

Cited by 11 publications

(9 citation statements)

References 35 publications

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“…At high MXene contents, agglomerations easily occurred and remained attached to the fiber surface. The rich oxygen-containing groups of MXene surface can interact with epoxy resins, such as hydrogen bonds . The agglomeration of MXene on the fiber surface rendered the epoxy resin partially firm at the interface and therefore susceptible to stress and easy formation of large epoxy resin particles when broken.…”

Section: Resultsmentioning

confidence: 99%

“…Second, nanoscale surface roughness and the wrinkled nature of MXene enhanced the mechanical interlocking, leading to better adhesion . Third, epoxy resin after curing can form strong hydrogen bonds with hydroxyl groups present on the MXene surface. ,, Finally, few hydroxyl functional groups on MXene may form covalent bonding with the epoxy matrix …”

Section: Resultsmentioning

confidence: 99%

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Functionalization with MXene (Ti₃C₂) Enhances the Wettability and Shear Strength of Carbon Fiber-Epoxy Composites

Liu

Ying

et al. 2019

ACS Appl. Nano Mater.

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MXene is a two-dimensional transition metal carbide or carbonitride with graphene-like 2D morphology and high surface activity, which are useful features in energy storage, catalysis, and adsorption. However, only a handful of structural applications have so far been reported. In this study, functionalization of a carbon fiber (CF) was achieved by MXene (Ti 3 C 2 ) to improve the CF surface wettability. The results showed that functionalization of MXene not only changed the CF surface topography and increased the mechanical engagement effect during debonding but also enhanced the surface activity of carbon fibers. The interfacial shear strength increased by 186% when compared with nonfunctionalized specimens. A possible interfacial enhancement mechanism was proposed to provide a future roadmap for surface modification of carbon fibers.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Functionalization with MXene (Ti₃C₂) Enhances the Wettability and Shear Strength of Carbon Fiber-Epoxy Composites

Liu

Ying

et al. 2019

ACS Appl. Nano Mater.

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“…Potassium persulfate (K 2 S 2 O 8 ) and sodium nitrate (NaNO 3 ) were obtained from Nakarai Tesque Co., Ltd. (Kyoto, Japan). GO was prepared by the Hummers method [21,22]. First, 6 g of graphite powder, 50 mL of H 2 SO 4 , and 10 g of K 2 S 2 O 8 were mixed, and the temperature of the mixture was elevated to 80 • C. P 4 O 10 was slowly added to the mixture, which was stirred for 3 h. The mixture was filtered and the filtrated powders were dried overnight.…”

Section: Preparation Of Gomentioning

confidence: 99%

Development and Characterization of a Poly (Vinyl Alcohol)/Graphene Oxide Composite Hydrogel as An Artificial Cartilage Material

et al. 2018

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Poly (vinyl alcohol) hydrogel (PVA-H) is expected to be a suitable artificial articular cartilage material because of its high biocompatibility. However, it is difficult to affix to the surface of a living joint because it is bioinert and its mechanical strength needs to be improved. In this study, graphene oxide (GO) subjected to two oxidation rounds was used to form a nanocomposite material and the composite hydrogel PVA-GO-H was prepared by low-temperature crystallization. Scanning electron microscope (SEM) images showed that the addition of GO can increase roughness of the hydrogel surface. Contact angle measurements showed that the surface of PVA-GO-H exhibited hydrophobicity that increased with GO concentration and not with that of PVA-H, indicating that the hydrophilic parts of PVA and GO form hydrogen bonds and the hydrophobic part of GO was exposed on the surface. Tensile tests demonstrated that Young’s modulus was enhanced on the addition of GO. Osteoblast cells showed more affinity for PVA-GO-H than PVA-H, which much more cells adhere to than to PVA-GO-H after a certain period of culturing, suggesting GO can improve the cell attachment of PVA-H. Further studies on the influence of the oxidation time of GO are still required.

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“…The wear properties of epoxy resins are reportedly improved by the addition of Si-based [1][2][3] or metal oxide nanoparticles [4][5][6]. Graphitic nanomaterials such as carbon nanotube and graphene are known additives to improve the tribological properties of resins because they have high solid lubricity and chemical inertness [7][8][9][10][11][12][13][14][15][16][17][18][19]. Carbon nanotube improved the wear resistance of epoxy resin with the amount of 0.1-1.0 mass% [7,8,15,17].…”

Section: Introductionmentioning

confidence: 99%

“…Carbon nanotube improved the wear resistance of epoxy resin with the amount of 0.1-1.0 mass% [7,8,15,17]. Graphene oxide (GO), which has a two-dimensional sheet-like structure, showed an improvement in friction, wear resistance, and mechanical properties of epoxy resin [9,12,[16][17][18][19][20]. It was assumed that the strong interaction between GO and epoxy might affect the mechanical and tribological properties.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Tribological Properties of Epoxy Resin by Addition of Oxidized Nanocarbons

et al. 2020

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Graphene oxide (GO) and oxidized wood-derived nanocarbon (oWNC) were dispersed in an epoxy resin to improve the mechanical and tribological properties of an epoxy resin. Mechanical properties of the GO/epoxy (GO/EP) and oWNC/epoxy composites (oWNC/ EP) were investigated by tensile tests and nano-indentation. Under dry, water, and oil lubrication conditions, friction coefficients and wear volumes of these composites were measured. GO has single-layered structure. oWNC has chain-like nanostructures, and the nanochains are aggregated. GO and oWNCs have same surface chemical composition due to the same oxidation treatment. Thus, in this study, the structure and morphology dependences of the nanocarbons in mechanical and tribological properties will be appeared when the nanocarbons were used as the additives in the resin. The tensile strength, tensile modulus, and hardness increased by 20%, 63%, and 35% in maximum by the addition of GO and oWNC to the epoxy resin, respectively. Moreover, the wear resistance of GO/EP and oWNC/EP was enhanced compared to that of a neat epoxy. The reduction rates of the wear volume for 5.0 mass% GO/EP and 1.0 mass% oWNC/EP achieved to 91% and 67%, respectively. Comparing GO and oWNC, oWNC effectively reduced the friction coefficient and wear at a lower concentration. The improvement of tribological properties after the addition of the oxidized nanocarbons can be attributed to the increase in the hardness and lubricity of the composites.

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Surface modification effects on the tensile properties of functionalised graphene oxide epoxy films

Abstract: In order to determine the molecular interaction to improve the mechanical properties of graphene oxide (GO)–epoxy resin composites, we investigated the relationship between GO oxidation properties and the tensile strength of the epoxy resin.

Cited by 11 publications

References 35 publications

Functionalization with MXene (Ti₃C₂) Enhances the Wettability and Shear Strength of Carbon Fiber-Epoxy Composites

Functionalization with MXene (Ti₃C₂) Enhances the Wettability and Shear Strength of Carbon Fiber-Epoxy Composites

Development and Characterization of a Poly (Vinyl Alcohol)/Graphene Oxide Composite Hydrogel as An Artificial Cartilage Material

Improvement of Tribological Properties of Epoxy Resin by Addition of Oxidized Nanocarbons

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Surface modification effects on the tensile properties of functionalised graphene oxide epoxy films

Abstract: In order to determine the molecular interaction to improve the mechanical properties of graphene oxide (GO)–epoxy resin composites, we investigated the relationship between GO oxidation properties and the tensile strength of the epoxy resin.

Cited by 11 publications

References 35 publications

Functionalization with MXene (Ti3C2) Enhances the Wettability and Shear Strength of Carbon Fiber-Epoxy Composites

Functionalization with MXene (Ti3C2) Enhances the Wettability and Shear Strength of Carbon Fiber-Epoxy Composites

Development and Characterization of a Poly (Vinyl Alcohol)/Graphene Oxide Composite Hydrogel as An Artificial Cartilage Material

Improvement of Tribological Properties of Epoxy Resin by Addition of Oxidized Nanocarbons

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Functionalization with MXene (Ti₃C₂) Enhances the Wettability and Shear Strength of Carbon Fiber-Epoxy Composites

Functionalization with MXene (Ti₃C₂) Enhances the Wettability and Shear Strength of Carbon Fiber-Epoxy Composites