Journal ArticleDOI
Polymer-layered silicate nanocomposites: preparation, properties and uses of a new class of materials
TLDR
In this article, a review of polymer-layered silicate nanocomposites is presented, where the polymer chains are sandwiched in between silicate layers and exfoliated layers are more or less uniformly dispersed in the polymer matrix.Abstract:
This review aims at reporting on very recent developments in syntheses, properties and (future) applications of polymer-layered silicate nanocomposites. This new type of materials, based on smectite clays usually rendered hydrophobic through ionic exchange of the sodium interlayer cation with an onium cation, may be prepared via various synthetic routes comprising exfoliation adsorption, in situ intercalative polymerization and melt intercalation. The whole range of polymer matrices is covered, i.e. thermoplastics, thermosets and elastomers. Two types of structure may be obtained, namely intercalated nanocomposites where the polymer chains are sandwiched in between silicate layers and exfoliated nanocomposites where the separated, individual silicate layers are more or less uniformly dispersed in the polymer matrix. This new family of materials exhibits enhanced properties at very low filler level, usually inferior to 5 wt.%, such as increased Young’s modulus and storage modulus, increase in thermal stability and gas barrier properties and good flame retardancy.read more
Citations
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Journal ArticleDOI
Molecular Dynamics of Natural Rubber/Layered Silicate Nanocomposites As Studied by Dielectric Relaxation Spectroscopy
Marianella Hernández,Marianella Hernández,Javier Carretero-González,Raquel Verdejo,Tiberio A. Ezquerra,Miguel A. López-Manchado +5 more
TL;DR: In this article, the effect of clay type and loading on the time scale of the relaxation process of the NR matrix has been studied by dielectric relaxation spectroscopy, and a new mode, slower than the segmental dynamics but faster than the normal mode associated with the chain dynamics, has been observed for both vulcanized and nonvulcanized nanocomposites with fillers having high levels of intercalation.
Journal ArticleDOI
Analysis of interactions in multicomponent polymeric systems: The key-role of inverse gas chromatography
J.M.R.C.A. Santos,J.T. Guthrie +1 more
TL;DR: In this article, a case study is presented, where use was made of inverse gas chromatography to characterize thermodynamically the surface of the major components of pigmented PC/PBT blends.
Journal ArticleDOI
Synthesis and properties of poly(methyl methacrylate)/montmorillonite (PMMA/MMT) nanocomposites
TL;DR: In this paper, the authors synthesize PMMA/MMT nanocomposites via in situ intercalative polymerization, and characterized by means of wide-angle X-ray diffractometry, transmission electron microscopy, thermal gravimetric analysis, dynamic mechanical analysis and Fourier transform infrared analysis.
Journal ArticleDOI
Carboxymethylcellulose–montmorillonite nanocomposite films activated with murta (Ugni molinae Turcz) leaves extract
Marcela Quilaqueo Gutiérrez,Ignacio Echeverría,Mónica Ihl,Valerio Bifani,Adriana Noemi Mauri +4 more
TL;DR: Gutierrez et al. as discussed by the authors presented a study of the relationship between education and technology in La Araucania (Chile) and Chile, focusing on the following topics:
Book ChapterDOI
Chapter 10.3 Clay Mineral– and Organoclay–Polymer Nanocomposite☆
TL;DR: In this article, the authors describe inorganic-organic hybrid materials as the subject of intensive research because of their huge potential for novel applications and present the numerous opportunities that nanocomposites offer.
References
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Journal ArticleDOI
Mechanical properties of nylon 6-clay hybrid
Yoshitsugu Kojima,Arimitsu Usuki,Masaya Kawasumi,Akane Okada,Yoshiaki Fukushima,Toshio Kurauchi,Osami Kamigaito +6 more
TL;DR: In this paper, the properties of nylon 6-clay hybrids, such as molecular composites of nylon and silicate layers of montmorillonite and saponite, NCH's and NCHP's, respectively, have been synthesized.
Journal ArticleDOI
Synthesis of nylon 6-clay hybrid
Arimitsu Usuki,Yoshitsugu Kojima,Masaya Kawasumi,Akane Okada,Yoshiaki Fukushima,Toshio Kurauchi,Osami Kamigaito +6 more
TL;DR: In this paper, the carboxyl and amino end groups were attributed to ammonium cations (-NH3+) of nylon molecules, because the difference agreed with the anion site concentration of the montmorillonite in NCH.
Journal ArticleDOI
Flammability and thermal stability studies of polymer layered-silicate (clay) nanocomposites
TL;DR: In this article, an overview of the research to date on the use of clays, dispersed at the nanometer level, in polymers for improving thermal stability and flammability is presented.
Journal ArticleDOI
Synthesis and properties of polyimide–clay hybrid
TL;DR: A polyimide hybrid with montmorillonite clay mineral has been synthesized from a dimethylacetamide (DMAC) solution of poly(amic acid) and a DMAC dispersion of montmoroniite intercalated with an ammonium salt of dodecylamine as mentioned in this paper.
Journal ArticleDOI
Preparation and Mechanical Properties of Polypropylene−Clay Hybrids
TL;DR: In this paper, the dispersibility of 10-A-thick silicate layers of the clays in the hybrid was investigated by using a transmission electron microscope and X-ray diffractometer.
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