Surface-modified cellulose nanocrystals for biobased epoxy nanocomposites

Liang, Yuanbo; Maiorana, Anthony; Khelifa, Farid; Patel, Ammar; Raquez, Jean-Marie; Bonnaud, Leïla; Gross, Richard A.; Dubois, Philippe

doi:10.1016/j.polymer.2017.11.051

Cited by 101 publications

(68 citation statements)

References 34 publications

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“…The results of the rheological analysis of the GrNP/epoxy mixtures are shown in Figure . For all GrNP samples, the shear storage modulus ( G ′) varies with the frequency throughout the range [Figure (a)], which is an indicative of the lack of network formation . This is in agreement with the XRD data in Figure .…”

Section: Resultssupporting

confidence: 84%

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Mechanical and dynamic‐mechanical properties of silane‐treated graphite nanoplatelet/epoxy composites

Lavoratti

Zattera

Amico

2018

J of Applied Polymer Sci

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Thermoset resins are widely used for composite applications due to their excellent mechanical properties. To further enhance their performance, nanofillers such as graphite nanoplatelets (GrNP) have been used, and extra improvement may arrive from surface treating these fillers. This study aims to evaluate the influence of GrNP content and treatment with (3‐glycidyloxypropyl)trimethoxysilane and (3‐aminopropyl)triethoxysilane on curing behavior and mechanical and dynamic mechanical properties of GrNP/epoxy composites. Composites reinforced with 0.25 wt % GrNP displayed increased tensile strength by 11.8% compared to the neat resin. Addition of 0.5 wt % GrNP increased the glass transition temperature in 10°C compared to the neat polymer. Silane treated fillers showed an improvement in tensile strength and dynamic‐mechanical properties compared to the neat resin and non‐treated GrNP/epoxy composites at similar filler content. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46724.

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Section: Resultssupporting

confidence: 84%

“…This is in agreement with the XRD data in Figure . Complex viscosity (η*) is constant for the entire frequency range for all samples [Figure (b)]—characteristic of Newtonian behavior . No significant difference or trend could be observed among the GrNP mixtures.…”

Section: Resultsmentioning

confidence: 99%

Mechanical and dynamic‐mechanical properties of silane‐treated graphite nanoplatelet/epoxy composites

Lavoratti

Zattera

Amico

2018

J of Applied Polymer Sci

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“…c, no significant exothermic peak is observed on the second heating run, indicating that the curing reactions are almost completed. It could be concluded that epoxy chains exhibit an equilibrium conformational state in the manufacture process .…”

Section: Resultsmentioning

confidence: 99%

Thermal and mechanical performance of unidirectional composites from bamboo fibers with varying volume fractions

et al. 2019

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In this work, a simple hand lay-up technique was employed to fabricate bamboo fiber reinforced epoxy resin composites, and subsequently composites with different fiber volume fractions (0%, 30%, 50%, and 70%) were prepared. To investigate the composite thermal properties, differential scanning calorimetry (DSC), thermogravimetric (TG) analysis, and dynamic mechanical analysis (DMA) were used. DSC demonstrates a decrease of glass transition temperature when fibers are incorporated into epoxy resin. TG results reveal that the degradation temperature increases with increasing the fiber content, and then a better thermal stability is achieved. The thermal results indicate that bamboo fibers provide a good resistance for heat insulation, suppressing the epoxy thermal decomposition. DMA shows that both storage modulus and loss modulus increase with increasing the fiber volume fraction in the temperature range of 30-200 C. Tensile tests and scanning electron microscopy (SEM) were also conducted on the specimens to investigate the material mechanical behavior. Compared with epoxy resin, the composites incorporated with bamboo fibers exhibit an improved tensile strength and modulus. The detailed analysis reveals that bamboo fibers have a positive effect on the thermo-mechanical properties of epoxy resin, providing a feasibility to using natural composites in a specific construction. POLYM. COMPOS., 40:3929-3937, 2019.

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“…The addition of the filler shows a slight decrease in T g because the filler is a low‐molecular‐weight molecule with a reinforcing effect. Therefore, it is seen to have a plasticizing effect between chains of the matrix polymer …”

Section: Resultsmentioning

confidence: 99%

Effect of interface affinity on the performance of a composite of microcrystalline cellulose and polypropylene/polylactide blends

Ryu

Kim

2019

Polymer International

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The effects of compatibilizer and fillers on the mechanical properties and dispersion state of droplets of polypropylene (PP)/polylactide (PLA) blends were investigated. Two blended composite systems, i.e. PP-rich (80/20) containing microcrystalline cellulose (MCC) modified with silane (m-MCC) and PLA-rich (20/80) containing MCC were prepared by melt compounding using a twin-screw extruder. The structural differences between MCC and m-MCC were confirmed using Fourier transform infrared spectra. Universal testing machine results revealed that the tensile strength and Young's modulus increased with the addition of compatibilizer and filler, respectively. These results were supported by the reduction of domain size observed by scanning electron microscopy. Differential scanning calorimetric analysis showed a change of the melting and crystallization behavior of blends according to the presence of compatibilizer or filler. An increase of the dynamic storage modulus and a decrease in tan with addition of compatibilizer indicated that the interfacial adhesion between PP and PLA improved.

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Surface-modified cellulose nanocrystals for biobased epoxy nanocomposites

Cited by 101 publications

References 34 publications

Mechanical and dynamic‐mechanical properties of silane‐treated graphite nanoplatelet/epoxy composites

Mechanical and dynamic‐mechanical properties of silane‐treated graphite nanoplatelet/epoxy composites

Thermal and mechanical performance of unidirectional composites from bamboo fibers with varying volume fractions

Effect of interface affinity on the performance of a composite of microcrystalline cellulose and polypropylene/polylactide blends

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