Nano-Scale Reinforcing and Toughening Thermoplastics: Processing, Structure and Mechanical Properties

Siengchin, Suchart

doi:10.5772/24290

Cited by 4 publications

(4 citation statements)

References 47 publications

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“…1a, 1b and 1c) in accordance with our previously reported results on POM containing systems [21,23,26]. A third common feature of all examined systems is the clear formation of a fast relaxation mechanism, in the temperature range between -100 °C and -40 °C (Figs.…”

Section: Resultssupporting

confidence: 81%

“…On one hand this relaxation process is only present in the POM/alumina system while it is not detected in any other POM containing system included not only in this work but also in previously reported works [21][22][23]26]. For that reason this process can be initially attributed to the alumina filler itself.…”

Section: Resultsmentioning

confidence: 52%

“…1a, 1b and 1c). This mechanism is denoted as γ-mode of POM and is also present in all POM containing systems previously studied by the authors [21,23,26]. Both α-and γ-modes of POM have been previously detected dielectrically as well as mechanically too [3][4][5].…”

Section: Resultsmentioning

confidence: 99%

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Dielectric relaxations in polyoxymethylene and in related nanocomposites: Identification and molecular dynamics

Karahaliou

Kerasidou

Georga

et al. 2014

Polymer

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Broadband dielectric spectroscopy is employed for the study of the dielectric response of Polyoxymethylene/boehmite alumina (POM/alumina) and Polyoxymethylene/Layered Silicates (POM/LS) semi-crystalline nanocomposites, together with the response of pure POM. The compilation of the dielectric responses of all systems reveals the existence of five dielectric relaxation mechanisms assigned, in terms of decreasing temperature at constant frequency, as IP (interfacial polarization), α-, 2 β-, γ-and δ-relaxations. IP, α-and γ-relaxations are detected in all studied systems and they are well documented in the literature. δ-relaxation, been the fastest mechanism, is present only in the POM/LS system and is associated with defect dipoles in the crystalline phase of POM. Finally, β-relaxation is present only in the POM/alumina nanocomposite and its dynamics obey Vogel-Fulcher-Tamann temperature dependence. This work presents a complete mapping of the dielectric relaxation mechanisms of POM and signifies the connection of β-mode with the glass to rubber transition of POM, confirming its cooperative character.

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Section: Resultssupporting

confidence: 81%

Section: Resultsmentioning

confidence: 52%

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Dielectric relaxations in polyoxymethylene and in related nanocomposites: Identification and molecular dynamics

Karahaliou

Kerasidou

Georga

et al. 2014

Polymer

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“…The beauty of this WM technique is that the fine nanoscale dispersion of performed particles during melt blending has been achieved. 15,16 Characteristic SEM pictures taken from the composites produced by the WM technique in Figure 1(a) and (b) shows that the BA particles are homogeneously dispersed in the POM matrix. The transmission electron microscopy (TEM) picture in Figure 1(c) confirmed a well dispersion of the BA.…”

Section: Materials and Preparation Of Compositesmentioning

confidence: 99%

Dynamic mechanic and creep behaviors of polyoxymethylene/boehmite alumina nanocomposites produced by water-mediated compounding

Siengchin

2012

Journal of Thermoplastic Composite Materials

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Nanocomposites composed of polyoxymethylene (POM) and synthetic boehmite alumina (BA) are produced by water-mediated (WM) technique. According to WM technique, an aqueous BA 25 and BA 220 nm dispersion was injected into the molten POM in a twin-screw extruder to prepare the related nanocomposite with 3 wt% BA content. The dispersion of BA was studied by scanning electron microscopy and transmission electron microscopy. The thermal, mechanical and creep properties of the composites were determined in dynamic mechanical thermal analysis and short-time creep tests, respectively (performed at various temperatures). The data indicate that an improvement in the stiffness of nanocomposites can be achieved. The POM/BA 25 nm composite outperformed the POM and POM/BA 220 nm composite with respect to the storage modulus and creep characteristics. This was attributed to the particle size effect of BA. Master curves of storage modulus versus frequency and creep compliance versus

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Nonlinear Viscoelasticity of One Dimensional Filler Reinforced Elastomer Composites

Jana

Patel

Rana

et al. 2014

Non-Linear Viscoelasticity of Rubber Composites and Nanocomposites

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Nano-Scale Reinforcing and Toughening Thermoplastics: Processing, Structure and Mechanical Properties

Cited by 4 publications

References 47 publications

Dielectric relaxations in polyoxymethylene and in related nanocomposites: Identification and molecular dynamics

Dielectric relaxations in polyoxymethylene and in related nanocomposites: Identification and molecular dynamics

Dynamic mechanic and creep behaviors of polyoxymethylene/boehmite alumina nanocomposites produced by water-mediated compounding

Nonlinear Viscoelasticity of One Dimensional Filler Reinforced Elastomer Composites

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