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
Biodegradation of polyurethanes and nanocomposites to non-cytotoxic degradation products.
Gisele Rodrigues da Silva,Armando Silva-Cunha,Francine Behar-Cohen,Eliane Ayres,Rodrigo Lambert Oréfice +4 more
TL;DR: In this paper, the toxicity of the biodegradable polyurethanes byproducts was evaluated by measuring their effect on the viability of retinal cells, and the results suggest that the hydrolytic unstable polyurethsanes and nanocomposites can be possible candidates for ophthalmological applications.
Long-term Water Absorption Behaviour of Polypropylene/Wood Flour/Organoclay Hybrid Nanocomposite
Ghasemi Esmaeil,Kord Behzad +1 more
TL;DR: In this paper, a hybrid composite of polypropylene/wood flour/nanoclay with different concentrations of nanoclay and maleated poly-propylene (MAPP) as compatibilizer were fabricated in an internal mixer.
Journal ArticleDOI
Cellulose acetate active films incorporated with oregano (Origanum vulgare) essential oil and organophilic montmorillonite clay control the growth of phytopathogenic fungi
Cícero C. Pola,Eber Antonio Alves Medeiros,Olinto Liparini Pereira,Victor Gomes Lauriano Souza,Caio G. Otoni,Geany Peruch Camilloto,Nilda de Fátima Ferreira Soares +6 more
TL;DR: In this article, a cellulose acetate (CAc) incorporated with different concentrations of oregano essential oil (OEO) and organophilic montmorillonite clay (MMT30B) was used to control the growth of phytopathogenic fungi.
Journal ArticleDOI
Structure, properties and corrosion resistivity of polymeric nanocomposite coatings based on layered silicates
TL;DR: A review of the recent research and development of polymeric nanocomposite coatings based on layered silicates can be found in this article, where the authors introduce the structure, properties, and surface modification of clay minerals.
Journal ArticleDOI
Multiresponsive Clay-Containing Layer-by-Layer Films
TL;DR: These multiresponse features of clay-containing films make them promising candidates for applications in sensing, actuation, and controlled delivery.
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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