Graphene and graphene derivatives toughening polymers: Toward high toughness and strength

Wang, Jianfeng; Jin, Xiuxiu; Li, Chunhai; Wang, Wanjie; Wu, Hong; Guo, Shaoyun

doi:10.1016/j.cej.2019.03.229

Cited by 254 publications

(104 citation statements)

References 172 publications

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“…With attention to all aspects discussed, bentonite nano clay in combination with CaCO 3 can enhance strength by rigidity and enhance ductility by compatibilization. Furthermore, ductility can be induced because matrix ligaments can cavitate around the rigid filler particle (crack bowing) or to push against the well-bonded fillers (crack pinning) [ 16 ]. The externally applied energy is used in crack pinning or crack bowing giving ductile (tough) behaviour to the matrix [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Pseudo-Ductility, Morphology and Fractography Resulting from the Synergistic Effect of CaCO3 and Bentonite in HDPE Polymer Nano Composite

Ahmed

Khan

et al. 2020

Materials

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Polymeric materials such as High density polyethylene(HDPE) are ductile in nature, having very low strength. In order to improve strength by non-treated rigid fillers, polymeric materials become extremely brittle. Therefore, this work focuses on achieving pseudo-ductility (high strength and ductility) by using a combination of rigid filler particles (CaCO3 and bentonite) instead of a single non-treated rigid filler particle. The results of all tensile-tested (D638 type i) samples signify that the microstructural features and surface properties of rigid nano fillers can render the required pseudo-ductility. The maximum value of tensile strength achieved is 120% of the virgin HDPE, and the value of elongation is retained by 100%. Furthermore, the morphological and fractographic analysis revealed that surfactants are not always going to obtain polymer–filler bonding, but the synergistic effect of filler particles can carry out sufficient bonding for stress transfer. Moreover, pseudo-ductility was achieved by a combination of rigid fillers (bentonite and CaCO3) when the content of bentonite dominated as compared to CaCO3. Thus, the achievement of pseudo-ductility by the synergistic effect of rigid particles is the significance of this study. Secondly, this combination of filler particles acted as an alternative for the application of surfactant and compatibilizer so that adverse effect on mechanical properties can be avoided.

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Section: Introductionmentioning

confidence: 99%

Pseudo-Ductility, Morphology and Fractography Resulting from the Synergistic Effect of CaCO3 and Bentonite in HDPE Polymer Nano Composite

Ahmed

Khan

et al. 2020

Materials

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“…The chemical structure on the surface of GO is another important factor that affects the toughening efficiency of GO in the polymers, which is responsible for the interfacial interaction between GO and the resin matrix [30,31,34]. X-ray photoelectron spectroscopy (XPS) was employed to identify the surface chemical property of the prepared GO.…”

Section: Characterizations Of the Gomentioning

confidence: 99%

“…4, the C 1s spectrum of GO is split into four peaks which are assigned to four types of carbon bonds: (1) C-C/C=C (284.5 eV), (2) C-O (286.9 eV), (3) C=O (288.2 eV), and (4) O-C=O (289 eV) [35]. The presence of oxygenated functional groups is beneficial to the dispersion of GO and bonding strength between GO and the polymeric matrix [30,31,34] Physical and Chemical Properties of Aluminum Alloy Surface…”

Section: Characterizations Of the Gomentioning

confidence: 99%

Synergistic Delamination Toughening of Glass Fiber-Aluminum Laminates by Surface Treatment and Graphene Oxide Interleaf

Liu

et al. 2020

Nanoscale Res Lett

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The synergistic effects of surface treatment and interleaf on the interlaminar mechanical properties of glass fiberaluminum laminates were studied. Aluminum sheets were treated with alkaline etching. Meanwhile, a graphene oxide (GO) interleaf was introduced between the aluminum sheet and the glass fiber-reinforced epoxy composite. Double cantilever beam and end-notched flexure tests were employed to evaluate the interlaminar fracture toughness of the glass fiber-aluminum laminates. The obtained results show that the toughening efficiency of the interleaf is dependent on the aluminum surface characteristics as well as the GO loading. Further comparison reveals that the highest mode-I and mode-II fracture toughnesses are obtained in the specimens with alkali etching treatment and addition of GO interleaf with 0.5 wt% of GO loading, which are 510% and 381% higher in comparison to the plain specimen. Fracture surfaces were observed to further uncover the reinforcement mechanisms.

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“…Graphene was first synthesized in 2004 by Andre Geim and Konstantin Novoselov [2] via simple mechanical exfoliation of graphite using Scotch Tape [3], and it received tremendous attentions by many scientists to carry out vast research about graphene up till now [5]. Graphene is composed of pure carbon that is bonded by van der Waals forces [6].…”

Section: Introductionmentioning

confidence: 99%

Production and Applications of Biomass-Derived Graphene-Like Materials

Arifin

2020

Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications

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Graphene and graphene derivatives toughening polymers: Toward high toughness and strength

Cited by 254 publications

References 172 publications

Pseudo-Ductility, Morphology and Fractography Resulting from the Synergistic Effect of CaCO3 and Bentonite in HDPE Polymer Nano Composite

Pseudo-Ductility, Morphology and Fractography Resulting from the Synergistic Effect of CaCO3 and Bentonite in HDPE Polymer Nano Composite

Synergistic Delamination Toughening of Glass Fiber-Aluminum Laminates by Surface Treatment and Graphene Oxide Interleaf

Production and Applications of Biomass-Derived Graphene-Like Materials

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