Distribution states of graphene in polymer nanocomposites: A review

Govindaraj, Premika; Соколова, Aнна; Salim, Nisa V.; Juodkazis, Saulius; Fuss, Franz Konstantin; Fox, Bronwyn

doi:10.1016/j.compositesb.2021.109353

Cited by 92 publications

(36 citation statements)

References 239 publications

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“…This superior enhancement could be explained by the mechanism of electrical conductivity in polymer nanocomposites. Briefly, The electrical conductivity mechanism in the graphene/polymer nanocomposites is due to the electron mobility, either through direct contact or an electron tunnelling mechanism [44]. The random distribution of the graphene sheets, and their challenges to form an interconnected network severely restrict the electron mobility in the nanocomposite.…”

Section: Electrical Conductivitymentioning

confidence: 99%

Excellent multifunctional behaviors of epoxy nanocomposites reinforced with graphene aerogel

Mahdavi

Adibnazari

2022

Preprint

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In this study, graphene aerogel (GA) was utilized to improve the multifunctionality of epoxy resin, which is highly necessary in its applications in integrated circuits and semiconductors. A scalable method with high capability for production of large size GA with desirable quality was proposed for GA synthesis. The synthesized GA was utilized to produce epoxy nanocomposite by epoxy resin infiltration in its macro-pores. Flexural modulus of the GA/epoxy nanocomposite was experimentally investigated and the results showed 30% increase with respect to the pure epoxy. The electrical conductivity of the nanocomposite reached to remarkable amount of 0.7 S/m, which is 13 orders of magnitudes more than the electrical conductivity of the neat epoxy. Moreover, the measured thermal conductivity for pure epoxy and GA/epoxy nanocomposites were 0.23 and 0.40 W/mK, respectively. The percentage of thermal conductivity enhancement per filler content is more than 101, which is in the top range of the reached values by various filler types in polymer nanocomposites. The proposed method could simultaneously increase the mechanical, electrical and thermal properties of epoxy polymer, and could be greatly beneficial for applications that need epoxy polymer with high multifunctionality.

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Section: Electrical Conductivitymentioning

confidence: 99%

Excellent multifunctional behaviors of epoxy nanocomposites reinforced with graphene aerogel

Mahdavi

Adibnazari

2022

Preprint

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“…Through the graft‐to or graft‐from way, the length of macromolecule chains bonded to GO can be controlled, which is favor to create nanocomposites with desirable properties. Polymers with reactive functional groups including PMMA, PEG, PVA, and polyamide are mainly grafted onto GO 82 . After grafting polymers, the thermal properties of nanocomposites have promotions since the dispersion of GO is enhanced 86 …”

Section: Nanoparticles Dispersion In Polymer Meltmentioning

confidence: 99%

“…For example, due to the excellent compatibility between PLA and polyethylene oxide (PEO), nanocellulose grafted with PEO (PEO‐g‐CNC) also demonstrated good dispersibility in the PLA matrix 81 . The ‘grafting to’ and ‘grafting from’ methods are also beneficial to enhancement the dispersion of graphene in polymers 82 . Graphene needs to be oxidized to graphene oxide (GO) before functionalization because of the availability of reactive sites on GO 83–85 .…”

Section: Nanoparticles Dispersion In Polymer Meltmentioning

confidence: 99%

Research progress on the correlation between properties of nanoparticles and their dispersion states in polymer matrix

Yang

Cui

Meng

et al. 2021

J of Applied Polymer Sci

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When fabricating polymer nanocomposites (PNCs), it is difficult for nanoparticles to disperse stably in polymer matrix since their high-surface energy can cause them to attract each other. In this paper, we review the effects of nanoparticle size, surface chemical properties, and thermodynamic parameters on the dispersion state of nanoparticles (including inorganic and organic particles) in PNCs and describe some key measures to promote the nanoparticles dispersion. The ideal nanoparticles dispersion in polymer melt is available when the particle size is smaller than the rotation radius of polymer chains and the particle surface is highly compatible or has interactions with the matrix. In polymer solution, establishing proper thermodynamic parameters is necessary to ensure the balance interactions among particles, solvents, and polymers, leading to the successful preparation of PNCs with ideal structure. These results could supply theoretical suggestions for the design of PNCs. Moreover, the equilibrium dispersion may be unavailable without reasonable kinetic parameters, even if the dispersion process is thermodynamically favorable. Therefore, more studies are required on both thermodynamics and kinetics of the dispersion process.

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“…Graphene, a two-dimensional layer of carbon atoms sp 2 , is probably the most widely used 2D material. Beyond graphene [ 6 ], there is a huge abundance of two-dimensional materials; among them, hexagonal boron nitride (hBN) [ 7 ], transition metal dichalcogenides [ 8 ], and MXenes stand out in epoxy composites. Graphene has exceptional electrical and thermal conductivity.…”

Section: Introduction Epoxy Resins and Mxenesmentioning

confidence: 99%

Recent Advances in MXene/Epoxy Composites: Trends and Prospects

et al. 2022

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Epoxy resins are thermosets with interesting physicochemical properties for numerous engineering applications, and considerable efforts have been made to improve their performance by adding nanofillers to their formulations. MXenes are one of the most promising functional materials to use as nanofillers. They have attracted great interest due to their high electrical and thermal conductivity, hydrophilicity, high specific surface area and aspect ratio, and chemically active surface, compatible with a wide range of polymers. The use of MXenes as nanofillers in epoxy resins is incipient; nevertheless, the literature indicates a growing interest due to their good chemical compatibility and outstanding properties as composites, which widen the potential applications of epoxy resins. In this review, we report an overview of the recent progress in the development of MXene/epoxy nanocomposites and the contribution of nanofillers to the enhancement of properties. Particularly, their application for protective coatings (i.e., anticorrosive and friction and wear), electromagnetic-interference shielding, and composites is discussed. Finally, a discussion of the challenges in this topic is presented.

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Distribution states of graphene in polymer nanocomposites: A review

Cited by 92 publications

References 239 publications

Excellent multifunctional behaviors of epoxy nanocomposites reinforced with graphene aerogel

Excellent multifunctional behaviors of epoxy nanocomposites reinforced with graphene aerogel

Research progress on the correlation between properties of nanoparticles and their dispersion states in polymer matrix

Recent Advances in MXene/Epoxy Composites: Trends and Prospects

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