Maleic anhydride-functionalized graphene nanofillers render epoxy coatings highly resistant to corrosion and microbial attack

Chilkoor, Govinda; Sarder, Roman; Islam, Jamil; ArunKumar, K.E.; Ratnayake, Ishara; Star, Shane; Jasthi, Bharat K.; Koratkar, Nikhil; Meyyappan, M.; Gadhamshetty, Venkataramana

doi:10.1016/j.carbon.2019.12.059

Cited by 50 publications

(18 citation statements)

References 34 publications

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“…The addition of GnP in the matrix improved the interfacial strength between the epoxy and fibre, and the nanographene acts as a bridging zone during the crack propagation through the matrix. [48][49][50] The incorporation of strong nanofiller GnP at the weak interface of the resin-rich region between the fibres promotes additional toughening mechanism through crack deflection, [51][52][53] filler debonding, filler interlocking and filler pullout. 26,54 These consequently enhanced fibrematrix interaction and also the fracture toughness.…”

Section: Mode I Interlaminar Fracture Characterizationmentioning

confidence: 99%

Fatigue analysis and fracture toughness of graphene reinforced carbon fibre polymer composites

Tareq

Jony

Zainuddin

et al. 2020

Fatigue Fract Eng Mat Struct

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Three‐point flexural fatigue behaviour and mode I interlaminar fracture toughness of the carbon fibre reinforced polymer composites (CFRPCs) modified by the addition of graphene nanoplatelet (GnP) were investigated. CFRPCs without any addition of nanoparticles were also tested as control samples. Fatigue life was characterized by the two parameter Weibull distribution function and predicted using the combined Weibull and Sigmoidal model. It was found that incorporation of very small amount (0.1%) of GnP in the epoxy polymer matrix improved mean and predicted fatigue life up to 155% and 190% (0.5 failure probability), respectively. The critical mode I interlaminar fracture toughness of the GnP reinforced composites was found up to 40% higher than the control samples. The improvement achieved by incorporating GnP is discussed in terms of crack deflection mechanism by nanoparticles and scanning electron micrograph images of the fracture specimens that revealed strong interfacial bonding in the nanoreinforced specimens.

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Section: Mode I Interlaminar Fracture Characterizationmentioning

confidence: 99%

Fatigue analysis and fracture toughness of graphene reinforced carbon fibre polymer composites

Tareq

Jony

Zainuddin

et al. 2020

Fatigue Fract Eng Mat Struct

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“…To obtain a homogenous construction, the nanoparticulate fillers should be separated from each other as much as possible [ 33 ]. In contrast, the composite films prepared herein featured a rough texture ( Figure 2 Ah) in the form of wrinkles and corrugations, which were primarily due to the stacking of graphene sheets [ 34 ]. The x GnP-containing films featured flake-shaped structures, the number of which increased with increasing x GnP content.…”

Section: Resultsmentioning

confidence: 99%

Effects of Ultrasonication Time on the Properties of Polyvinyl Alcohol/Sodium Carboxymethyl Cellulose/Nano-ZnO/Multilayer Graphene Nanoplatelet Composite Films

Zhang

Dong

et al. 2020

Nanomaterials

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Ultrasonication-assisted solution casting was used to prepare polyvinyl alcohol (PVA)/sodium carboxymethyl cellulose (CMC)/nano-ZnO/multilayer graphene nanoplatelet (xGnP) composite films; the performances (mechanical properties, water vapor permeability (WVP), biodegradability and antibacterial activity) of these films were investigated as a function of the ZnO NPs:xGnP mass ratio and ultrasonication time. Intermolecular interactions among ZnO NPs, xGnP and the PVA/CMC matrix were shown to improve WVP, while X-ray diffraction and scanning electron microscopy analyses revealed that the internal reticular structure of ultrasound-treated PVA/CMC/ZnO NPs/xGnP composite films was in a fluffier state than that of the untreated composite films and the PVA/CMC film. The incorporation of ZnO NPs and xGnP into the composite film reduced its tensile strength and elongation at break, and increased antibacterial activity and biodegradability. In addition, we carried out the experiment of strawberry preservation and measured weight loss ratio, firmness, content of total soluble solids and titration acid. Finally, the composite film of 7:3 had the best preservation effect on strawberries. Thus, the obtained results paved the way to develop novel biodegradable composite films with antimicrobial activity for a wide range of applications.

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“…Due to this, the corrosion current decreased and corrosion potential increased. [52][53][54][55][56][57] Tb-GO coating was not possible to peel out from the alloy surface due to the strong acceptor and donor functional groups at the coating material surface 58,59 and also the edge carboxylic resonance structure of graphene oxide could trap chlorides ions. The values of corrosion inhibition are shown in Table 1, and it can be concluded that the electrochemical studies support the surface studies.…”

Section: Corrosion Inhibition Studiesmentioning

confidence: 99%

Facile synthesis of Tb-decorated graphene oxide: electrochemical stability, hydrogen storage, and corrosion inhibition of Mg AZ13 alloy in 3.5% NaCl medium

et al. 2021

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Maleic anhydride-functionalized graphene nanofillers render epoxy coatings highly resistant to corrosion and microbial attack

Cited by 50 publications

References 34 publications

Fatigue analysis and fracture toughness of graphene reinforced carbon fibre polymer composites

Fatigue analysis and fracture toughness of graphene reinforced carbon fibre polymer composites

Effects of Ultrasonication Time on the Properties of Polyvinyl Alcohol/Sodium Carboxymethyl Cellulose/Nano-ZnO/Multilayer Graphene Nanoplatelet Composite Films

Facile synthesis of Tb-decorated graphene oxide: electrochemical stability, hydrogen storage, and corrosion inhibition of Mg AZ13 alloy in 3.5% NaCl medium

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