Giant electrical energy storage density in the P(VDF-TrFE)–graphene oxide composite papers with quasi-two-dimensional ferroelectricity

Ullah, Sana; Han, Zhuo; Zheng, Guang

doi:10.1007/s10854-019-01089-3

Cited by 4 publications

(1 citation statement)

References 30 publications

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“…[1][2][3] Carbon-based materials such as carbon nanotubes (CNTs), carbon black (CB), graphene, reduced graphene oxide (rGo) and other 2D materials are intensively employed for the enhancement in the mechanical, electrical and thermal properties. [4][5][6][7][8][9][10] Researchers working in polymeric nanocomposites have already made tremendous advances by introducing functional binders in nanocomposites to effectively utilise them for the benefit of society. [11][12][13][14][15] However, creep, a time-dependent fracture phenomenon that occurs due to molecular movement in the backbone of the base polymer structure, adversely affects the strength and other structural properties, hampering polymers' practical applications 16,17 in various engineering sectors.…”

Section: Introductionmentioning

confidence: 99%

Enhancement in creep resistance of pristine polystyrene with incorporation of exfoliated 2D graphene nanosheets at low filler loading

Malik

Raza

Ahmad

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Determination of the reliability and durability of polymers in structural applications is highly dependent on the resistance to time-dependent plastic deformation. In this study, creep behaviour and enhancement in creep resistance of polystyrene-graphene nanocomposites is investigated at low filler loading. Herein, 2D material (graphene) is synthesised by the liquid-phase exfoliation method ( LPE) using the tetrahydrofuran ( THF) solvent via batch sonication. Samples are characterised by Scanning Electron Microscopy ( SEM) for morphology analysis and X-rays Diffraction ( XRD) for identification of polystyrene-graphene (PS-G) peaks in nanocomposites. Additionally, Atomic Force Microscopy ( AFM) is employed to quantify sheet’s thickness and Optical Microscopy ( OM) to corroborate the dispersion of 2D sheets. The creep resistance of PS-G nanocomposites is measured at room temperature (25°C) by incorporating 2D sheets of flake length ∼359 μm with 0.1, 0.3, 0.5, 0.7 and 0.9 wt.%. A significant enhancement in the time to withstand constant creep load (1 N) is observed. The creep resistance of the samples exhibits a maximum increase of 79%, 258.24%, 647.25%, 417.58% and 760.44%, respectively, compared to pristine polystyrene. This increase in creep resistance resulted from intense interfacial contact between polymer chains and filler accompanied by adequate scattering/dispersion in the polymer matrix.

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