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Showing 1 to 20 of 177 for “"Montmorillonite."”.
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Polyethylene-montmorillonite nanocomposites
… and flame retardancy. In order to disperse montmorillonite clay (MMT) into polyethylene(PE), the clay sheets need to be rendered organophilic. Masterbatches with a high level (~40 %wt) of organomodified clay can then be dispersed into a host by a simple mechanical process. Two chemically …
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The Flow Properties of Montmorillonite, Fe-Montmorillonite, Al-Montmorillonite, and Soil Clay Suspensions and Their Changes With Anaerobic Reduction
Made available in DSpace on 2014-12-10T17:12:36Z (GMT). No. of bitstreams: 1 6812073.pdf: 6275592 bytes, checksum: e7f644e66ee522403a0750fa7aed43d2 (MD5) Previous issue date: 1968
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The Effect of Variations in Montmorillonite Upon The Nature of Montmorillonite-Organic Complexes
Made available in DSpace on 2014-12-04T19:13:20Z (GMT). No. of bitstreams: 1 0005948.pdf: 2977758 bytes, checksum: 80a6cc1daa6817b0649dd2310f406039 (MD5) Previous issue date: 1953
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Polyamide-imide and Montmorillonite Nanocomposites
… investigate the effect that the introduction of montmorillonite (MMT) has on PAI. MMT was introduced into an uncured PAI suspension; the sample was then cured by step-wise heat treatment. Polarized optical microscopy was used to choose the best suitable MMT for PAI matrix and to study the …
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Montmorillonite dissolution rates in simulated lung fluids
Includes bibliographical references (pages 81-85).
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Structural Aspects of Some Montmorillonite-Organic Reactions
Made available in DSpace on 2014-12-04T19:13:58Z (GMT). No. of bitstreams: 1 6004003.pdf: 6339719 bytes, checksum: 198ae65f02f48ee49ec1cd87b54472f7 (MD5) Previous issue date: 1960
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Electrochemical synthesis of CeO2 and CeO2/montmorillonite nanocomposites.
… oxidation Ce2O3 to CeO2. CeO2 / montmorillonite nanocomposites were electrochemically produced. X-ray diffraction and Raman spectroscopy illustrate the retaining of FCC structure for cerium oxide. Fourier Transform Infrared Spectroscopy and Differential Scanning Calorimetry of …
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Investigation of montmorillonite clay-mediated reactions of aldehydes
Montmorillonite clays are employed as effective and environmentally benign heterogeneous catalysts for several reactions of aldehydes: (1) the hetero-Diels-Alder reaction of aromatic aldehydes with 2,3-dimethyl-1,3-butadiene to give dihydropyran products; (2) the cyclotrimerization of aliphatic …
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A Study of Sorption of Cesium by Montmorillonite
Made available in DSpace on 2014-12-09T20:34:19Z (GMT). No. of bitstreams: 1 6511834.pdf: 2208997 bytes, checksum: 57a8a94a994bc5ce0dc68aea1f3438b6 (MD5) Previous issue date: 1965
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The Effect of POSS Modified Montmorillonite On Elastomer Nanocomposites
… trisilanol POSS were used as modifiers of montmorillonite clay. A commercially avai lable, organically modified clay was used as a control. These fillers were studied as a function of loading level in a hydrogenated nitri le butadiene rubber and a styrene butadiene rubber matrix. Both POSS …
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Structure property and deformation analysis of polypropylene montmorillonite nanocomposites.
Nanocomposites with expandable smectites such as montmorillonite layered silicates (MLS) in polymer matrices have attracted extensive application interest. Numerous MLS concentrations have been used with no particular justification. Here, we investigate the effects of MLS dispersion within the …
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The oligomerization of propene over nickel synthetic mica-montmorillonite
… of propene to liquid fuels using synthetic mica montmorillonite (SMM) as well as the effect of incorporating nickel into the lattice and nickel, cobalt and zinc into the interlayer spaces was investigated. NiSMM is more active for propene oligomerization than SMM, although the product selectivity …
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Swelling properties of some montmorillonite clays in water systems
Soil clays relatively high in montmorillonite were examined and compared to the reference material.
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Interaction of aqueous U(VI) with goethite, montmorillonite, and UO2(s)
… Second, multiple SCMs for U(VI) adsorption onto montmorillonite were reviewed, and their performance for a large range of input conditions was evaluated. A new SCM was developed using a large and varied composite dataset to generate a model that would provide effective simulation over the full …
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Preparation and Characterization of a Treated Montmorillonite Clay and Epoxy Nanocomposite
Montmorillonite reinforced polymers are a new development in the area of nanocomposite materials. Since reinforcement of epoxy is important to the development of high strength adhesives and composite matrices, the introduction of montmorillonite to epoxy is of interest. Compositional effects on …
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Mechanistic tracer studies of a synthetic mica-montmorillonite: n-butene isomerizations
… catalytic characteristics of a synthetic mica-montmorillonite clay. The double bond isomerizations (including both double bond migration and rotation, but excluding structural rearrangements of the carbons) of the n-butenes were employed as the probe reactions. Product analyses were performed …
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Extraction of Heavy Metals from Aqueous Solutions using Chitosan/Montmorillonite Hybrid Hydrogels
… from aqueous solutions. Novel chitosan (CTS)/ montmorillonite (MMT) hybrid hydrogels have been successfully developed by freeze-drying technique. The morphology of the hydrogels is observed to be porous and the existence of reactive ligands for chelation is confirmed, The stability of the …
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Study of controlled release of dapsone from modified montmorillonite and polymer matrices
… Ingredient (API) intercalated into sodium montmorillonite (MMT-Na+) and their combination with an anionic copolymer (Eudragit S100). The effects of the excipients on the API dissolution rate were studied from their release profile in simulated intestinal fluid (pH=7.4) at 37+/-0.5 C. In the …
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The application of a modified MacMichael viscometer in rheologic studies of montmorillonite clays
<p>Available instruments for viscosity and rheologic measurements necessitate disruption of the system under test prior to observations. Generally, the gel structure of a thixotropic clay must be disturbed by shaking, pouring into a container for testing, and again upon insertion into the sample of …
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