Journal ArticleDOI
Synthesis and barrier properties of poly(ε‐caprolactone)‐layered silicate nanocomposites
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TLDR
In this article, a polymer-ceramic nanocomposite was synthesized consisting of well-dispersed, two-dimensional layers of an organically modified mica-type silicate (MTS) within a degradable poly(e-caprolactone) matrix.Abstract:
A new polymer-ceramic nanocomposite has been synthesized consisting of well-dispersed, two-dimensional layers of an organically modified mica-type silicate (MTS) within a degradable poly(e-caprolactone) matrix. A protonated amino acid derivative of MTS was used to promote delamination/dispersion of the host layers and initiate ring-opening polymerization of e-caprolactone monomer, resulting in poly(e-caprolactone) chains that are ionically bound to the silicate layers. The polymer chains can be released from the silicate surface by a reverse ion-exchange reaction and were shown to be spectroscopically similar to pure poly(e-caprolactone). Thick films of the polymer nanocomposite exhibit a significant reduction in water vapor permeability that shows a linear dependence on silicate content. The permeability of nanocomposite containing as low as 4.8% silicate by volume was reduced by nearly an order of magnitude compared to pure poly(e-caprolactone)read more
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Influence of nanofillers on the deformation process in layered silicate/polyamide-12 nanocomposites
TL;DR: In this article, a molecular network is proposed to improve the stiffness/strength/toughness balance of polyamide-12 polysilicon composites by forming micro voids inside stacks of layered silicates.
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Nylon 6/Na–montmorillonite nanocomposites prepared by compounding Nylon 6 with Na–montmorillonite slurry
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Nanocomposites of polyurethane with various organoclays: Thermomechanical properties, morphology, and gas permeability*
Jin-Hae Chang,Yeong Uk An +1 more
TL;DR: In this paper, the properties of polyurethane (PU) nanocomposites with three different organoclays were compared in terms of their thermal stabilities, mechanical properties, morphologies, and gas permeabilities.
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Thermal expansion behavior of nylon 6 nanocomposites
TL;DR: In this article, the linear thermal expansion behavior of nanocomposites was measured and compared with the theory by Chow, and the results showed that high molecular weight (HMW) nylon 6 nanocompositionites resulted in lower thermal expansion than LMW nylon 6 at the same organoclay content.
Journal ArticleDOI
Polyethylene-layered silicate nanocomposites prepared by the polymerization-filling technique: synthesis and mechanical properties
TL;DR: In this article, polyethylene-layered silicate nanocomposites were prepared by the in situ intercalative polymerization of ethylene by the so-called polymerization-filling technique and analyzed by transmission electron microscopy, X-ray diffraction analysis (XRD), differential scanning calorimetry, dynamic mechanical analysis and tensile testing.