Fracture toughness of nylon 6/organoclay/elastomer nanocomposites

Lim, Sangyeob; Dasari, Aravind; Yu, Zhong‐Zhen; Mai, Yiu‐Wing; Liu, Songlin; Yong, M. S.

doi:10.1016/j.compscitech.2007.05.007

Cited by 72 publications

(42 citation statements)

References 25 publications

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“…Without vital relief mechanisms, such as plastic deformation, this stress often causes the material to fracture in a brittle mode with low toughness [42,43] . In this study, the addition of stiff n-SiC, is believed to hinder the mobility of surrounding chains in the polymer, consequently limiting the stress relief provided by plastic deformations.…”

Section: Results and Discussion Mechanical Propertiesmentioning

confidence: 99%

Characterization of Mechanical and Fracture Behaviour in Nano-Silicon Carbide-Reinforced Vinyl-Ester Nanocomposites

Alhuthali

Low

2013

Polymer-Plastics Technology and Engineering

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Vinyl-ester/nano-silicon carbide nanocomposites were synthesised and investigated in terms of their mechanical and fracture properties. Results show that the addition of nano-SiC particles increases modulus and strength, but reduces toughness. The enhancement in strength for nanocomposites was attributed to good interfacial adhesion and good degree of dispersion. The experimental data for elastic modulus were modelled using several theoretical models. The excellent agreement with the experimental data for elastic modulus given by the Guth and Kerner models indicate that the degree of dispersion and the quality of particle/matrix adhesion were both important considerations for the prediction of elastic modulus.

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Section: Results and Discussion Mechanical Propertiesmentioning

confidence: 99%

Characterization of Mechanical and Fracture Behaviour in Nano-Silicon Carbide-Reinforced Vinyl-Ester Nanocomposites

Alhuthali

Low

2013

Polymer-Plastics Technology and Engineering

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“…Unlike conventional micro and macrocomposites, polymer/clay mineral nanocomposites can exhibit remarkable improvement in materials properties, such as high modulus, increased strength, high heat distortion temperature and flame retardancy [2] . A number of previous studies have demonstrated that these improvements strongly depend on the interfacial interactions and their dispersion in the polymer matrix [3,4] .…”

Section: Introductionmentioning

confidence: 99%

Polyurethane grafted attapulgite as novel fillers for nylon 6 nanocomposites

Shi

Yang

Han

et al. 2011

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Attapulgite fi bers were modifi ed by polyurethane, forming polyurethane grafted attapulgite (AT-PU), which was confirmed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Nylon 6/AT-PU nanocomposites of different modified attapulgite loadings were prepared by melt blending in a twin screw extruder. Scanning electron microscopy (SEM) observation on the fracture surfaces of the nanocomposites showed not only a uniform dispersion of AT-PU but also a strong interfacial adhesion with the matrix. Differential scanning calorimeter (DSC) and Thermogravimetric analyzer (TGA) were used to illustrate the influence of AT-PU particles on the thermal properties of the nylon 6/AT-PU nanocomposites. The results indicated that the addition of attapulgite probably induced the heterogeneous nucleation and was favorable for the formation of γ -crystalline form, and that the higher thermal stability was obtained for the composites.

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“…Fracture toughness results indicated that these ternary nanocomposites are supertough. 35 Thus, if clay is present in the matrix and if it is only partially exfoliated, it is beneficial. Although delamination or interfacial debonding of intercalated clay layers present in the matrix may not consume a great deal of energy, it is certainly advantageous than having exfoliated clay layers where no such processes occur.…”

Section: Mechanisms Of Fracture Under Static Three-point Bending Condmentioning

confidence: 99%

Biomolecule Assisted Hydrothermal Synthesis of Chainlike Network of Silver Sulfide Nanostructures

Dasari

Mai

et al. 2008

j nanosci nanotechnol

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The primary focus of this work is to elucidate the location and extent of exfoliation of clay on fracture (under both static and dynamic loading conditions) of melt-compounded nylon 66/clay/SEBS-g-MA ternary nanocomposites fabricated by different blending sequences. Distinct microstructures are obtained depending on the blending protocol employed. The state of exfoliation and dispersion of clay in nylon 66 matrix and SEBS-g-MA phase are quantified and the presence of clay in rubber is shown to have a negative effect on the toughness of the nanocomposites. The level of toughness enhancement of ternary nanocomposites depends on the blending protocol and the capability of different fillers to activate the plastic deformation mechanisms in the matrix. These mechanisms include: cavitation of SEBS-g-MA phase, stretching of voided matrix material, interfacial debonding of SEBS-g-MA particles, debonding of intercalated clay embedded inside the SEBS-g-MA phase, and delamination of intercalated clay platelets. Based on these results, new insights and approaches for the processing of better toughened polymer ternary nanocomposites are discussed.

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Fracture toughness of nylon 6/organoclay/elastomer nanocomposites

Cited by 72 publications

References 25 publications

Characterization of Mechanical and Fracture Behaviour in Nano-Silicon Carbide-Reinforced Vinyl-Ester Nanocomposites

Characterization of Mechanical and Fracture Behaviour in Nano-Silicon Carbide-Reinforced Vinyl-Ester Nanocomposites

Polyurethane grafted attapulgite as novel fillers for nylon 6 nanocomposites

Biomolecule Assisted Hydrothermal Synthesis of Chainlike Network of Silver Sulfide Nanostructures

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