نتایج جستجو برای: na montmorillonite nanoclay
تعداد نتایج: 269869 فیلتر نتایج به سال:
Biocomposite films were prepared using normal maize starch plasticized with glycerol and water sodium montmorillonite clay particles employing the solution mixing procedure. Scanning electron microscopy (SEM), X-ray diffraction (XRD), three-dimensional profilometry tensile along nanoindentation tests assisted a Finite Element Analysis (FEA) used for assessment of starch-based various percentage...
Preparation of E-glass/waterborne epoxy prepregs containing natural nanoclay and properties of their composites are presented. Prepregs were prepared by wetting randomly oriented, chopped glass fiber preforms with aqueous dispersion of EpiRez 3522-W-60 resin, dicyandiamide, 2-methylimidazole and natural nanoclay (Cloisite Naþ). The nanoclay content of the aqueous dispersion was adjusted to yiel...
Montmorillonite (Mt) clays have a high specific surface area and surface charge, which confer them remarkable adsorption properties. Nevertheless, their electrochemical and aggregation behavior are not completely elucidated because of the complexity of their microstructural and interfacial properties. In this work, the conductive and dispersive properties of Na-Mt suspensions of weight fraction...
Polymer-nanoclay composite materials have attracted considerable interest among materials scientists recently because of the pioneering work carried out by a research group in the Toyota Central Research Laboratories. The group applied a nylon-montmorillonite clay nanocomposite as an under-the-hood structural part in the engine compartment of an automobile with significantly improved tensile st...
introduction: nanocomposites are prepared by introduction of dispersed nanoscale particles into the polymer matrix based on four methods: template synthesis (sol-gel preparation); intercalation of polymer; and in situ intercalative polymerization and last one is melt blending, the most favorable and practical method due to its simplest, economical and environmentally friendly technic. this meth...
This paper reports a study into the effect of nanoclays on water-resistance intumescent system ammonium polyphosphate/melamine/pentaerythritol/titanium dioxide/polymer (ethylene vinyl acetate (EVA) or styrene acrylate (SA). It has been established that adding nanoclay to coating based ethylene increases fire resistance limit metal plate by 30 %, and – 50 %. At same time, coatings include EVA po...
A versatile new concept is presented for the synthesis of Janus colloids composed of Laponite nanoclay armored poly(divinylbenzene) with an anisotropic surface potential via a double Pickering emulsion template. First, polystyrene or poly(divinylbenzene) colloids stabilized with Laponite nanoclay are synthesized via a Pickering miniemulsion approach. These nanoparticle-stabilized colloids were ...
The research work reported in this paper is extension of our previous findings related to intercalation of procainamide hydrochloride, an antiarrythmia drug in interlayer gallery of Na(+)-clay (montmorillonite). The microcomposite particles prepared from procainamide-montmorillonite hybrid and poly L-lactide were characterised by scanning electron microscope and atomic force microscopy analysis...
ترکیب شیمیایی، کانیشناسی و کاربرد بنتونیتهای دهمحمد، چاهکم-1، چاهکم -2 و شیرگشت (خراسان و یزد)
Mineralogy and chemical composition of Deh Mohammad, Shirgesht, Chah Cam-1 and Chah Cam-2 bentonite deposits were studied in detail. Tests for foundry moulds uses carried out on raw and processed. Deh Mohammad with 300000 tons reserve is the biggest deposit. Deh Mohammad consists of 75 – 95% montmorillonite, 5 - 25% cristobalite, 0 -3% calcite, and less than 1.5% halite. The colloidal index for...
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