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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Organoclay Filled Natural Rubber Nanocomposites: The Effects of Filler Loading
TL;DR: In this article, the effect of organoclay loading up to 10 PHR was studied and the results indicated that the tensile strength and elongation at break reached optimum at 4 PHR loading, and the incorporation of organcoated rubber increased the hardness and tensile modulus and hardness of NR nanocomposites.
Journal ArticleDOI
Preparation and thermal properties of resole‐type phenol resin–clay nanocomposites
TL;DR: In this paper, it was shown that the silicate layers of the clay acted as barriers to oxygen penetration into the resin, as the degree of heat degradation of the nanocomposite was much lower than that of the straight phenol resin.
Journal ArticleDOI
Using of p-Phenylenediamine as Modifier of Montmorrilonite for Preparation of Epoxy-Clay Nanocomposites: Morphology and Solvent Resistance Properties
Davood Zaarei,Ali Asghar Sarabi,Farhad Sharif,Mohsen Moazzami Gudarzi,Seyed Mahmoud Kassiriha +4 more
TL;DR: In this paper, modification of clay surfaces with an aromatic amine for the increment of dispersion and exfoliation into the epoxy matrix has been investigated, and the structure of the modified clay and the microstructure of the resultant nanocomposite were studied by optical microscopy, X-ray diffraction, transmission electron microscopy and Fourier transform infrared spectroscopy.
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Synthesis of exfoliated polyamide 6,6/organically modified montmorillonite nanocomposites by in situ interfacial polymerization
Mohammad Tarameshlou,Seyed Hassan Jafari,Hossein Ali Khonakdar,Madjid Farmahini-Farahani,Shahin Ahmadian +4 more
TL;DR: In this article, a novel method, using direct interfacial polymerization of an aqueous hexamethylene diamine and a nonaqueous adipoyl chloride in dichloromethane solution containing different amounts of OMMT dispersed nanoparticles, was presented.
Journal ArticleDOI
Enhancement of Dimensional Stability in Soluble Fluorinated Polyimides via the in Situ Formation of Lanthanum(III)−Oxo−Polyimide Nanocomposites
Robin E. Southward,D. Scott Thompson,Todd A. Thornton,David W. Thompson, ,§ and,Anne K. St. Clair +4 more
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