Journal ArticleDOI
Synthesis and barrier properties of poly(ε‐caprolactone)‐layered silicate nanocomposites
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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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Charge transfer complex formation in in-situ maleic anhydride and N-vinyl caprolactam copolymer and copolymer/organo-montmorillonite nanoarchitectures
TL;DR: In this paper, the binary copolymerization of maleic anhydride (MA) and N-vinyl caprolactam (VCL) or considered as acceptor (A)−donor (D) monomer systems were used (MA:VCL), 50:50 in BPO (0.5%) as an initiator at 70°C under nitrogen atmosphere.
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Optically transparent polycarbonate/clay nanocomposites with improved performance using phosphonium modified organoclay: Preparation and characterizations
TL;DR: In this paper, the morphology and properties of polycarbonate (PC)/clay nanocomposites prepared through melt blending and solution blending at two different loadings of organoclay (0.5 and 1 phr).
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Viscoelastic properties and reinforcement of non-aggregated and aggregated nanocomposites
TL;DR: In this article, the properties of polymer nanocomposites consisting of narrow disperse spherical nanoparticles that are coated with narrow disperse polymers were investigated using small angle X-ray scattering (SAXS) and transmission electron microscopy (TEM).
Journal ArticleDOI
Effect of the dispersion of organic rectorite on the nonisothermal crystallization kinetics and melting behaviors of nylon 6 nanocomposites
TL;DR: In this article, the effects of the dispersion of organic rectorite (OREC) and the cooling rate on the crystallization behavior of nylon 6/OREC nanocomposites have been systematically investigated with X-ray diffraction, transmission electron microscopy, differential scanning calorimetry, and the modified Ozawa model.
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Dispersion of nanoclay into polypropylene with carbon dioxide in the presence of maleated polypropylene
Quang T. Nguyen,Donald G. Baird +1 more
TL;DR: In this paper, the effect of maleic anhydride grafted polypropylene (PP-g-MA) on the mechanical and rheological properties of PP-clay nanocomposites was studied.