Covalent functionalization of graphene with organosilane and its use as a reinforcement in epoxy composites

Wang, Xin; Xing, Weiyi; Zhang, Ping; Song, Lei; Yang, Hongyu; Hu, Yuan

doi:10.1016/j.compscitech.2012.01.027

Cited by 345 publications

(178 citation statements)

References 26 publications

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“…In the case of GO, the peak located at 1716, 1637, 1375, 1227 and 1048 cm -1 are assigned to the stretching vibrations of C=O of carboxylic and carbonyl groups, C=C, -OH of the carboxyl group, C-O of the epoxy group and C-OH group, respectively. Similar patterns were observed in other studies [10,19]. These observations indicate that the GO contains abundant oxygen-containing functional groups.…”

Section: Characterizationsupporting

confidence: 79%

Using maleic anhydride functionalized graphene oxide for improving the interfacial properties of carbon fiber/BMI composites

Yuan²,

Wang³

et al. 2016

Express Polym. Lett.

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Abstract. Maleic anhydride functionalized graphene oxide (MAH-GO) was synthesized and then introduced into carbon fiber (CF) reinforced bismaleimide (BMI) composites, with the aim of improving the interfacial adhesion strength between CF and BMI resin. Various characterization techniques including Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectra (XPS) and thermogravimetric analysis (TGA) demonstrated that the maleic anhydride has been successfully grafted onto the GO surfaces. The study showed that the interlaminar shear strength (ILSS) and flexural properties of CF/BMI composites were all improved by the incorporation of GO and MAH-GO, and the MAH-GO showed the substantially improved effect due to the strong interaction between the MAH-GO and the resin matrix. The maximum increment of the ILSS, flexural strength and flexural modulus of composites were 24.4, 28.7 and 49.7%, respectively. Scanning electron microscope (SEM) photographs of the fracture surfaces revealed that the interfacial bonding between CF and resin matrix was significantly strengthened by the addition of MAH-GO. The results suggest that this feasible method may be an ideal substitute for the traditional method in the interfacial modification of composites.

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Section: Characterizationsupporting

confidence: 79%

Using maleic anhydride functionalized graphene oxide for improving the interfacial properties of carbon fiber/BMI composites

Yuan²,

Wang³

et al. 2016

Express Polym. Lett.

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“…Increment in the T max value of~2°C is observed for PLA-GR nanocomposites with respect to neat PLA. The GR incorporated in the PLA matrix provides barrier effect for the diffusion of volatile degradation by-products by prolonging the "tortuous pathway" [41,42]. The advancement in the thermal degradation temperature would also have been resulted from the shielding effect provided by the flake like structure of GR [43].…”

Section: Thermo Gravimetric Analysismentioning

confidence: 96%

Influence of graphene on thermal degradation and crystallization kinetics behaviour of poly(lactic acid)

et al. 2015

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In present study, the effect of graphene (GR) on crystallization and thermal degradation kinetic behavior of poly(lactic acid) (PLA) was investigated. The non isothermal cold crystallization kinetic study for PLA-GR nanocomposites was carried out using differential scanning calorimetry at different heating rates of 2.5, 5, 7.5 and 10°C/min. The obtained kinetic data were analyzed using crystallization kinetic models such as Avrami and Tobin methods. The decreasing trend obtained in the Avrami as well as Tobin exponent (n and n T, respectively) with respect to neat PLA revealed the nucleating effect of graphene. Thermal degradation behavior of both PLA and PLA-GR nanocomposites was also analyzed by Kissinger method. The increasing trend in the activation energy with respect to GR loading was observed as compared to neat PLA. This is an indication of improvement in the thermal stability of PLA with an increase in the GR loading. Polarized optical microscopy (POM) was used to observe the growth of spherulites in the PLA and PLA-GR nanocomposites. With respect to addition of GR in the PLA matrix, reduction in the nucleation induction time and an increment in the number of nucleation sites were reflected in the POM analysis.

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“…Moreover, the chemical functionality significantly alters Van der Waals interactions among the nanofiller aggregates, leading to their easy dispersion in the polymer matrix. [17] As such, GOx has recently attracted attention as a filler for polymer nanocomposites. [18] Although the GOx can be readily dispersed into polar solvents or monomers, it is electrically insulating.…”

Section: Introductionmentioning

confidence: 99%

In Situ Reduction of Graphene Oxide in an Epoxy Resin Thermally Cured with Amine

Sangermano

Tagliaferro

Foix

et al. 2013

Macro Materials & Eng

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A procedure is proposed to prepare electrically conductive epoxy resin composites exploiting in situ reduction of graphene oxide (GOx) during the epoxy thermal curing in presence of amine. The optimum curing conditions are evaluated, and the efficiency of the reduction process of GOx induced by amine is confirmed by XPS analyses. The composites electrical resistivity show a decrease by increasing filler amount, and this can only be due to the partial restoration of the conductive sp 2 structure occurred during thermal curing. This is a simple, easy-to-scale, one-step process to obtain electrically conductive epoxy cured materials by mixing the resin components and the well dispersible insulating GOx.

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Covalent functionalization of graphene with organosilane and its use as a reinforcement in epoxy composites

Cited by 345 publications

References 26 publications

Using maleic anhydride functionalized graphene oxide for improving the interfacial properties of carbon fiber/BMI composites

Using maleic anhydride functionalized graphene oxide for improving the interfacial properties of carbon fiber/BMI composites

Influence of graphene on thermal degradation and crystallization kinetics behaviour of poly(lactic acid)

In Situ Reduction of Graphene Oxide in an Epoxy Resin Thermally Cured with Amine

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