Polymer Based Nanocomposites: Effect of Filler-Filler and Filler-Matrix Interactions

Bréchet, Y.; Cavaillé, J.Y.; Chabert, Emmanuelle; Chazeau, Laurent; Dendievel, Rémy; Flandin, Lionel; Gauthier, Catherine

doi:10.1002/1527-2648(200108)3:8<571::aid-adem571>3.0.co;2-m

Cited by 176 publications

(106 citation statements)

References 16 publications

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“…This might affect the percolation parameter of nano filler, as in the case of 5% nano OPEFB/epoxy nanocomposites, where nano filler are much stiffer than the epoxy matrix. Analogous explanations were also reported by other researchers (Brechet et al 2001;Cassagnau 2013;Dorigato et al 2013). The increase in number or concentrations of nano filler particles increases the density, which is attributed to the clustering mechanism or agglomeration of nano OPEFB filler under the driving force of their Brownian motion with a weak flow within the epoxy matrix.…”

Section: Tensile Propertiessupporting

confidence: 83%

Fabrication of Epoxy Nanocomposites from Oil Palm Nano Filler: Mechanical and Morphological Properties

et al. 2016

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The aim of this research was to fabricate epoxy nanocomposites by utilizing the developed nano filler from oil palm mills agricultural wastes oil palm empty fruit bunch (OPEFB) fibers for advanced applications. Epoxy-based polymer nanocomposites were prepared by dispersing 1, 3, and 5 wt. % nano OPEFB filler by using a high speed mechanical stirrer through hand lay-up technique. The mechanical (tensile and impact) properties and morphological properties of nano OPEFB/epoxy nanocomposites were examined and compared. Morphological properties were analyzed by transmission electron microscopy (TEM) and scanning electron microscopy (SEM) to look at the dispersion of the nano OPEFB filler in the epoxy matrix. The tensile and impact properties of nanocomposites increased until 3% nano filler loading, but beyond 3% they decreased. Overall mechanical properties reached maximum values for 3% loading, due to better stress transfer owing to homogenous dispersion of nano OPEFB filler within epoxy matrix. The observed results were also confirmed by SEM and TEM micrographs.

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Section: Tensile Propertiessupporting

confidence: 83%

Fabrication of Epoxy Nanocomposites from Oil Palm Nano Filler: Mechanical and Morphological Properties

et al. 2016

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“…The first were silica organosols supplied in the form of a 30 wt % suspension of SiO 2 in isopropanol (HL, Highlink NanO G502, Clariant). The particles are slightly hydrophobic with a density equal to 2 g/cm 3 and average size of 13 nm. 44 The corresponding specific surface was equal to 230 m 2 /g.…”

Section: Methodsmentioning

confidence: 99%

Immobilized Polymer Fraction in Hyperbranched Polymer/Silica Nanocomposite Suspensions

et al. 2010

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The glass transition behavior of hyperbranched polymer (HBP) molecules with suspensions of silica and glass particles up to the concentrated regime (25 vol %) was analyzed by modulated differential scanning calorimetry (MDSC). The reversing and nonreversing components of the MDSC signal were measured on suspensions of untreated and silylated particle of size in the nanometer and micrometer ranges. The heat capacity step (ΔC p ) at the glass transition of the HBP was found to be independent of silica loading for microparticles, whereas it decreased with increasing particle amount in the case of nanoparticles. A similar behavior was observed for the enthalpy relaxation. These changes in chain dynamics and the progressive suppression of aging were attributed to immobilization effects of the HBP at the surface of the particles, which became detectable only in the case of a very high specific surface. The immobilized HBP fraction was assumed to form a shell of constant thickness around individual particles and was calculated from the ΔC p at the transition. In the case of untreated particles with a silanol surface, the immobilized shell was formed by HBP molecules H-bonded to the particles. The thickness of the shell was found to be equal to 1.9 nm, which corresponded to half the size of the HBP. In the case of methacrylsilane-treated silica, the immobilized shell thickness was found to be equal to 1.3 nm, which corresponded to a monolayer of covalently bound silane.

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“…Furthermore, the relationships between the polymer-polymer interaction, polymer-filler interaction, and filler-filler interaction [12][13][14] have to be considered. Figure 1 shows a schematic illustration of filler network.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of natural rubber with filler nanomatrix structure

et al. 2015

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Natural rubber with filler nanomatrix structure was prepared by forming chemical linkages between natural rubber particles and filler nanoparticles. The filler nanomatrix structure was formed by graft copolymerization of vinyltriethoxysilane (VTES) onto natural rubber particles in the latex stage followed by casting of the latex to prepare an as-cast film. The silica nanoparticles were produced during the graft copolymerization through hydrolysis and condensation, i.e., sol-gel reaction; hence, they linked to the natural rubber particles. The nanomatrix structure was observed by transmission electron microscopy, in which the natural rubber particles of about 1 μm in diameter were well dispersed in the filler nanomatrix. Tensile properties were significantly improved by forming filler nanomatrix structure. The loss modulus and loss tangent of the natural rubber with the filler nanomatrix structure were almost independent of deformation frequency in the rubbery plateau region, which was explained to be due to the energetic elasticity and entropic elasticity characteristic of the nanomatrix structure.

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Polymer Based Nanocomposites: Effect of Filler-Filler and Filler-Matrix Interactions

Cited by 176 publications

References 16 publications

Fabrication of Epoxy Nanocomposites from Oil Palm Nano Filler: Mechanical and Morphological Properties

Fabrication of Epoxy Nanocomposites from Oil Palm Nano Filler: Mechanical and Morphological Properties

Immobilized Polymer Fraction in Hyperbranched Polymer/Silica Nanocomposite Suspensions

Preparation and properties of natural rubber with filler nanomatrix structure

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