Results 171 to 180 of about 3,968 (205)

Organoclay-enzyme film electrodes

Analytica Chimica Acta, 2006
This paper aims at showing the interest of organoclays (clay minerals containing organic groups covalently attached to the inorganic particles) as suitable host matrices likely to immobilize enzymes onto electrode surfaces for biosensing applications. The organoclays used in this work were natural Cameroonian smectites grafted with either aminopropyl ...
Kemmegne Mbouguen, Justin, Ngameni, Emmanuel, Walcarius, Alain   +2 more
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Cement substitution by organoclay – The role of organoclay type

Cement and Concrete Composites, 2015
Abstract In this paper three organically modified clays (OC) with different functional group of modifier and basal spacing ( d 001 ) but approximately the same alkyl chain length were considered in order to identify which parameter of OC is the most characteristic for the selection of appropriate OC for cement substitution.
Regina Kalpokaitė-Dičkuvienė, Irena Lukošiūtė, Jūratė Čėsnienė, Kristina Brinkienė, Arūnas Baltušnikas   +4 more
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Rheology of Organoclay Nanocomposites:  Effects of Polymer Matrix/Organoclay Compatibility and the Gallery Distance of Organoclay

Macromolecules, 2003
The linear dynamic viscoelasticity, and transient and intermittent shear flows of organoclay nanocomposites, which were prepared with poly(ethylene-ran-vinyl acetate) (EVA), poly(ethylene-ran-vinyl alcohol) having 53 mol % vinyl alcohol (EVOH-53), or poly(ethylene-ran-vinyl acetate-ran-vinyl alcohol) having 5 mol % vinyl alcohol (EVAOH-5) were ...
Kyung Min Lee, Chang Dae Han
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Optimizing organoclay stabilized Pickering emulsions

Journal of Colloid and Interface Science, 2011
Oil-in-water emulsions were prepared using montmorillonite clay platelets, pre-treated with quaternary amine surfactants. In previous work, cetyl trimethylammonium bromide (CTAB) has been used. In this study, two more hydrophilic quaternary amine surfactants, Berol R648 and Ethoquad C/12, were used and formed Pickering emulsions, which were more stable
Cui, Yannan, Threlfall, Mhairi, van Duijneveldt, Jeroen S.   +2 more
openaire   +3 more sources

Lamellar nanostructure in ‘Somasif’-based organoclays

Clays and Clay Minerals, 2007
AbstractThermally induced lamellar structure changes due to phase transition and degradation in organoclays based on a synthetic ‘Somasif’ mineral and two organic surfactants, di-methyl dihydro-ditallow ammonia chloride (DMDTA) and tri-butyl-hexadecyl phosphonium bromide (HTBP) were investigated by differential scanning calorimetry (DSC ...
Gelfer, M., Burger, C., Nawani, P., Hsiao, B., Chu, B., Si, M., Rafailovich, M., Panek, G., Jeschke, G., Fadeev, A., Gilman, J.   +10 more
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Effect of Compatibilizing Agents on Organoclay Dispersion of Polypropylene/Organoclay Nanocomposites

2021
Progress in Applied Science and Technology, 11, 3, 9 ...
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Optical Properties of Fluorescein‐labeled Organoclay

Photochemistry and Photobiology, 2010
AbstractWe report the preparation of aminopropyl‐functionalized magnesium phyllosilicate (Mg‐organoclay) conjugated to fluorescein isothiocyanate (FITC) functionality (FITC‐organoclay) by one‐pot sol‐gel synthesis. The physical characteristics of the Mg‐ and FITC‐organoclays were examined by scanning electron microscopy (SEM), X‐ray diffraction (XRD ...
Lee, YC Lee, Young-Chul, Lee, TH Lee, Tae-Ho, Han, HK Han, Hyo-Kyung, Go, WJ Go, Woon-Jung, Yang, JW Yang, Ji-Won, Shin, HJ Shin, Hyun-Jae   +5 more
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Effects of organoclay modification on microstructure and properties of polypropylene–organoclay nanocomposites

Journal of Applied Polymer Science, 2005
AbstractWe prepared polypropylene nanocomposites based on a modified organoclay with isobutyl trimethoxysilane to investigate the effects of such modifications of organoclay on the microstructure and properties of the nanocomposite. The organoclay was preliminarily intercalated with distearyldimethylammonium bromide via an ion exchange before being ...
Lee, JW, Kim, MH, Choi, WM, Park, OO Park, OOk   +3 more
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Rheology of organoclay suspension

Colloid and Polymer Science, 2011
We have studied the rheological properties of clay suspensions in silicone oil, where clay surfaces were modified with three different types of surfactants. Dynamic oscillation measurements showed a plateau-like behavior for all the organoclay suspensions studied, which indicated more solid-like characteristics.
Mpitloane Joseph Hato, Ke Zhang, Suprakas Sinha Ray, Hyoung Jin Choi   +3 more
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Effects of processing steps and organoclay content in butadiene rubber/organoclay nanocomposites

Journal of Applied Polymer Science, 2013
AbstractEven though polybutadiene rubber (BR) is a hydrophobic polymer, BR/organoclay nanocomposites are prepared successfully without a compatibilizer by using conventional compounding method. The main objective of this article is to investigate the effect of processing steps on the dispersion of organoclays in the BR matrix.
Min‐Su Kim, Gue‐Hyun Kim
openaire   +1 more source