Use of morphological features of carbonaceous materials for improved mechanical properties of epoxy nanocomposites

Atif, Rasheed; Wei, Jiacheng; Shyha, Islam

doi:10.1039/c5ra24039e

Cited by 30 publications

(31 citation statements)

References 58 publications

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“…In addition, topography and morphology of the filler also influence the mechanical properties of nanocomposites. Atif et al showed that a wide particle size distribution yields an effective reinforcement as the empty spaces created by the larger particles can be occupied by the smaller particles thereby resulting in a strong network of the filler and a concomitant increase in the mechanical properties [143]. A uniform dispersion of the filler in the matrix is the most important issue.…”

Section: Reviewmentioning

confidence: 99%

Reasons and remedies for the agglomeration of multilayered graphene and carbon nanotubes in polymers

Atif

Inam

2016

Beilstein J. Nanotechnol.

247

123

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SummaryOne of the main issues in the production of polymer nanocomposites is the dispersion state of filler as multilayered graphene (MLG) and carbon nanotubes (CNTs) tend to agglomerate due to van der Waals forces. The agglomeration can be avoided by using organic solvents, selecting suitable dispersion and production methods, and functionalizing the fillers. Another proposed method is the use of hybrid fillers as synergistic effects can cause an improvement in the dispersion state of the fillers. In this review article, various aspects of each process that can help avoid filler agglomeration and improve dispersion state are discussed in detail. This review article would be helpful for both current and prospective researchers in the field of MLG- and CNT-based polymer nanocomposites to achieve maximum enhancement in mechanical, thermal, and electrical properties of produced polymer nanocomposites.

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Section: Reviewmentioning

confidence: 99%

Reasons and remedies for the agglomeration of multilayered graphene and carbon nanotubes in polymers

Atif

Inam

2016

Beilstein J. Nanotechnol.

247

123

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“…In PMCs, thermosetting epoxy is the most commonly used matrix [4][5][6][7]. The damage tolerance and fracture toughness of epoxy can be enhanced with the incorporation of (nano-) fillers such as metallic oxides [8][9][10], clays [11][12][13], carbon nanotubes (CNTs) [14][15][16], and other carbonaceous materials [17][18][19]6,5].…”

Section: Introductionmentioning

confidence: 99%

Fractography analysis of 1.0 wt% nanoclay/multi-layer graphene reinforced epoxy nanocomposites

Atif

2016

Journal of Composite Materials

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Abstract:The topographical features of fractured tensile, flexural, K1C, and impact specimens of 1.0 wt% Multi-Layer Graphene (MLG)/nanoclay-epoxy (EP) nanocomposites have been investigated. The topographical features studied include maximum roughness height (Rmax or Rz), root mean square value (Rq), roughness average (Ra), and waviness (Wa). Due to deflection and bifurcation of the cracks by nanofillers, specific fracture patterns are observed. Although these fracture patterns seem aesthetically appealing, however, if delved deeper, they can further be used to estimate the influence of nanofiller on the mechanical properties. By a meticulous examination of topographical features of fractured patterns, various important aspects related to fillers can be approximated such as dispersion state, interfacial interactions, presence of agglomerates, and overall influence of the incorporation of filler on the mechanical properties of nanocomposites. In addition, treating the nanocomposites with surfaces of specific topography can help improve the mechanical properties of nanocomposites.

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“…Apart from that, graphene based materials has been used is different fields such as composites and coatings, electronics devices, energy storage, sensors and biomedical applications [20]. Atif et al in their study reported that MLG improved Young's modulus and microhardness by 25.7% and 18.3%, respectively [24]. The MLG also increased Tg and storage modulus compared to unfilled epoxy [25][26][27].…”

Section: Introductionmentioning

confidence: 97%

Effect of Short Term Water Exposure on the Mechanical Properties of Halloysite Nanotubes-Multi Layer Graphene Reinforced Polyester Nanocomposites

Saharudin¹,

Atif²

2017

Preprint

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Abstract:The influence of short term water absorption on the mechanical properties of halloysite nanotubes-multi layer graphene reinforced polyester hybrid nanocomposites has been investigated. The addition of nano-fillers significantly increased the flexural strength; tensile strength and impact strength in dry and wet conditions. After short term water exposure; the maximum microhardness; tensile; flexural and impact toughness values were observed at 0.1 wt% MLG. The microhardness increased up to 50.3%; tensile strength increased up to 40% and flexural strength increased up to 44%. Compared to dry samples; the fracture toughness and surface roughness of all types of produced nanocomposites were increased that may be attributed to plasticization effect. Scanning electron microscopy revealed that the main failure mechanism is caused by the weakening of nanofiller-matrix interface induced by water absorption. It was further observed that synergistic effects were not effective at concentration of 0.1 wt% to produce considerable improvement in mechanical properties of produced hybrid nanocomposites.

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Use of morphological features of carbonaceous materials for improved mechanical properties of epoxy nanocomposites

Abstract: The mechanical properties of epoxy nanocomposites can be significantly altered by tailoring the morphological features of carbonaceous fillers.

Cited by 30 publications

References 58 publications

Reasons and remedies for the agglomeration of multilayered graphene and carbon nanotubes in polymers

Reasons and remedies for the agglomeration of multilayered graphene and carbon nanotubes in polymers

Fractography analysis of 1.0 wt% nanoclay/multi-layer graphene reinforced epoxy nanocomposites

Effect of Short Term Water Exposure on the Mechanical Properties of Halloysite Nanotubes-Multi Layer Graphene Reinforced Polyester Nanocomposites

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