Mechanical properties of epoxy composites filled with silane-functionalized graphene oxide

Wan, Yan; Gong, Li; Tang, Long‐Cheng; Wu, Lianbin; Jiang, Jian

doi:10.1016/j.compositesa.2014.04.023

Cited by 575 publications

(270 citation statements)

References 60 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%

“…As can be seen, the pristine graphite is thermally stable. After oxidation, the GO show significant decomposition at approximately 230°C, which is likely due to the decomposition of labile oxygen-containing functional groups [9,10,20], yielding CO, CO 2 and H 2 O. From the DTG curve of MAH-GO, it is clearly shown that there are two weight loss peaks appeared at 176 and 256°C, re- spectively.…”

Section: Characterizationmentioning

confidence: 98%

“…Therefore, the interfacial adhesion of composites can be im-proved by this new hierarchical reinforcement due to consuming much more energy by pulling out the functionalized GO from the matrix or breakage of them. On the other hand, the introduction of the functionalized GO can increase the modulus of polymer matrix significantly [10][11][12], that is to say, it can reduce the modulus difference between matrix and fiber, which is also beneficial for the applied load transferring more effectively from matrix to CFs. CF reinforced bismaleimide (BMI) composites have been widely used as one of advanced composites owing to their superior mechanical and thermal properties [13,14].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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%

Section: Characterizationmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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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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“…In general, the key factors for obtaining advanced performance polymer nanocomposites are homogeneous distribution of nanofiller within the polymer matrix, and a strong interfacial adhesion between matrix and nanofiller [7]. Nevertheless, the chemical affinity between inorganic fillers of hydrophilic nature and nonpolar hydrophobic polymers is low, which could be compatibilized by surface modification of the filler [8,9].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of ionic liquid onto halloysite nanotubes: Thermal and mechanical properties of heterophasic PE-PP copolymer nanocomposites

Bischoff¹,

Simon²,

Liberman³

et al. 2016

AIP Conference Proceedings

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Abstract. The surface adsorption of inorganic clays with ionic liquids has attracted much attention due to improve the interaction of hydrophilic clay with the hydrophobic polymers. However, successful organic adsorption strongly depends on the characteristics of ionic liquid (anion, chain size and concentration), and the reaction conditions (as polarity of solvent). In this study, such factors were analyzed and correlated with morphology, thermal and mechanical properties of the nanocomposites. The heterophasic ethylene-propylene copolymer nanocomposites were prepared by melt intercalation method in a twin screw co-rotating extruder. The halloysite nanotubes (HNT) was used as filler -natural and modified with different ionic liquids. The results showed that a better distribution and dispersion of the nanoparticles was achieved in the samples with modified HNT (m-HNT) and was more significant when the ionic liquid adsorption was conducted in a less polar solvent. The thermal stability of the nanocomposites with m-HNT was higher compared to the neat CP. Additionally, the better balance in the mechanical properties was obtained by the use of the more hydrophobic ionic liquid and higher concentration with improve of 27% in the Young Modulus without loss in the impact properties at room temperature. These superior behaviors of ionic liquid adsorption products exhibit properties suitable for many industrial applications.

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“…What is more, most of the previous works are associated with tensile modulus, while the prediction of compressive modulus is often neglected, 22 and there remains a great need for better understanding the compression behaviours of materials and the underlying mechanisms in order to strengthen one's ability to predict the mechanical properties and boost the development of polymer-clay nanocomposites. In practice, a spectrum of advanced experimental approaches has been developed to prepare polymer/clay nanocomposites to improve the dispersion of clay within the polymer matrix, such as chemical modifications of polymer matrix, 23 pretreatment of clay 24 and master batch. 25 However, its reproducibility is affected by many factors and requires rigorous control of experimental conditions.…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamics studies on the overall compressive modulus of nylon 6/montmorillonite nanocomposites

Sun

2016

Advances in Mechanical Engineering

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Molecular dynamics simulations together with micromechanics method have been proven an effective approach to assess the elastic moduli of either partially or fully exfoliated (i.e. single-layer) effective clay (montmorillonite) cluster. In this work, similar approach was adopted to estimate the overall compressive modulus of nylon 6/montmorillonite nanocomposites. In detail, the compressive modulus of single-layer effective clay cluster along either lateral or longitudinal directions was first determined by performing molecular dynamics simulations, and then, the compressive modulus of partially exfoliated two-layer or three-layer effective clay clusters along the longitudinal direction was measured in a similar way. Finally, the overall compressive moduli of clay-incorporated polymer nanocomposites with either randomly dispersed or well-aligned effective clay clusters at different volume fractions of clay were evaluated according to the individual compressive modulus using the well-established rule of mixture.

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Mechanical properties of epoxy composites filled with silane-functionalized graphene oxide

Cited by 575 publications

References 60 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

Adsorption of ionic liquid onto halloysite nanotubes: Thermal and mechanical properties of heterophasic PE-PP copolymer nanocomposites

Molecular dynamics studies on the overall compressive modulus of nylon 6/montmorillonite nanocomposites

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