Functionalization of mild oxidized graphene with O-phenylenediamine for highly thermally conductive and thermally stable epoxy composites

Akhtar, M. Wasim; Lee, Yun Seon; Yang, Cheol Min; Kim, Jong Seok

doi:10.1039/c6ra17946k

Cited by 17 publications

(11 citation statements)

References 49 publications

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“…6C shows pitting initiation healing by the alkyl amine-functionalized GO on the Mg alloys. [47][48][49][50] Furthermore, the elemental compositions suggested that the oxygen concentration was less, as compared with the traditional epoxy-coated Mg alloys. From the microstructure, we concluded that the octylamine-functionalized GO materials have signicant corrosion resistance in a 3.5% NaCl solution.…”

Section: Afm Alloy Microstructurementioning

confidence: 99%

Experimental and computational studies of graphene oxide covalently functionalized by octylamine: electrochemical stability, hydrogen evolution, and corrosion inhibition of the AZ13 Mg alloy in 3.5% NaCl

2020

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Section: Afm Alloy Microstructurementioning

confidence: 99%

Experimental and computational studies of graphene oxide covalently functionalized by octylamine: electrochemical stability, hydrogen evolution, and corrosion inhibition of the AZ13 Mg alloy in 3.5% NaCl

2020

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“…This enhancement is due to the improved compatibility of functionalized sisal with epoxy matrix. 10 To evaluate the thermal stability of the epoxy composite, the kinetic analysis of thermal stability has been investigated. 60,61 Doyle’s model is used to calculate the decomposition temperature of neat epoxy and its composites.…”

Section: Resultsmentioning

confidence: 99%

“…Several reports showed that the introduction of functional moieties on the surface of the fiber enhances the interface between fibers and matrix. 10 The functionalization of the fibers is vital to improving the interfacial bond between matrix and fiber, and it also enhances the properties of composite materials. Various methods have been reported for surface modification including chemical, 11 physical, 12 and biological treatments.…”

Section: Introductionmentioning

confidence: 99%

Effect of silanized sisal fiber on thermo-mechanical properties of reinforced epoxy composites

Mughal

Akhtar

Baloch

et al. 2019

Journal of Composite Materials

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An effective method was adopted to improve the thermo-mechanical properties of the epoxy composite by functionalization of the sisal fiber. Initially, a neat sisal fiber was acetylated with molar solution of acidic mixture (0.5:1 of HNO3:H2SO4) that removed the content of lignin and hemicellulose and increased the crystallinity of the sisal fiber. The acetylated sisal ( a-sisal) fiber was further treated with 3-aminpropyltriethoxy silane to graft the silanol moieties on sisal fiber. The functionalization of the sisal fiber with 3-aminpropyltriethoxy silane exhibits the strong interaction with epoxy, resulting in homogenous dispersion of the sisal fiber in epoxy. The composite possesses great enhancement in thermal and mechanical properties. The tensile strength in functionalized sisal epoxy composite ( CP-f-Sisal) was significantly enhanced up to 23% in comparison to non-functionalized sisal epoxy composite ( CP-n-Sisal) by adding 15 wt.% of the sisal fiber. In addition, the functionalized sisal epoxy composite ( CP-f-sisal) shows better thermal stability as compared to non-functionalized sisal epoxy composite ( CP-n-sisal). Similar results are attributed by investigating the kinetics of thermal stability parameters that include activation energy and integral procedure decomposition temperature.

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“…By adding just 6 wt. % of OPD-f-Graphene 13 fold of rise in thermal conductivity has been noted [24]. The thermal conductivity of polyimdie lled boron nitride is improved to 1.2 W.m -1 .K -1 after surface modi cation of boron nitride particles [25].…”

Section: Introductionmentioning

confidence: 97%

Surface modification of magnesium oxide/epoxy composites with significantly improved mechanical and thermal properties

Akhtar

Kim

Memon

et al. 2021

J Mater Sci: Mater Electron

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This paper demonstrated the effect of functionalized magnesium oxide (MgO) nanoparticles with 3-(Aminopropyl) triethoxysilane (APTES) as llers on the mechanical and thermal properties of epoxy composite. The functionalization of MgO (S-MgO) considerably improved the inteface between the MgO and epoxy resin. The mechanical properties of the composites revealed that the addition of functionalized MgO improved their tensile strength, modulus of elasticity, and ductility when compared to neat epoxy. In compare to neat epoxy, the in-plane thermal conductivity of the epoxy composite with S-MgO ller improved by 10 folds. These observations indicated that the silane functionalization on MgO contributes to the formation of a strong interfacial bond and a compact interconnected network between the ller and the epoxy matrix.

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Functionalization of mild oxidized graphene with O-phenylenediamine for highly thermally conductive and thermally stable epoxy composites

Abstract: In this study, an effective and novel method was developed to improve the thermal conductivity of epoxy composites by functionalization of graphene.

Cited by 17 publications

References 49 publications

Experimental and computational studies of graphene oxide covalently functionalized by octylamine: electrochemical stability, hydrogen evolution, and corrosion inhibition of the AZ13 Mg alloy in 3.5% NaCl

Experimental and computational studies of graphene oxide covalently functionalized by octylamine: electrochemical stability, hydrogen evolution, and corrosion inhibition of the AZ13 Mg alloy in 3.5% NaCl

Effect of silanized sisal fiber on thermo-mechanical properties of reinforced epoxy composites

Surface modification of magnesium oxide/epoxy composites with significantly improved mechanical and thermal properties

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