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Showing 1 to 17 of 17 for “"Organoclay"”.
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Polymer-organoclay nanocomposites by melt processing
… on a variety of polymer matrices and several organoclays were prepared by melt processing. A detailed characterization of the thermal degradation of several commercial and experimental organoclays often used to form polymer nanocomposites was reported. The surfactant type, loading, and …
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Chain Extension of Polyamide-6 & Polyamide-6/Organoclay Nanocomposites. Control of thermal degradation of polyamide-6/organoclay nanocomposites during extrusion using a novel chain extender
… thermal degradation of polyamide-6 (PA-6) and organoclay (organically modified layered silicates) nanocomposites during melt compounding have been investigated. In this research, a novel chain extender (Joncryl ADR 3400) has been used to improve thermal stability of PA-6 and PA- 6/organoclay …
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Immobilization of Heavy Metals in Contaminated Soils and Sludge Using Organoclay
… Microscopy. The adsorption capacity of the organoclay was measured by its mixing with contaminated kaolin soil samples and by analysis of heavy metal contents in leachate. The adsorbent was efficient in immobilization of heavy metals in both neutral aqueous and acidic media. In addition, the …
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Modified Organoclay Containing Chelating Ligand for Adsorption of Heavy Metals in Solution.
… of mesoporous structure. Laboratory tests of the organoclay efficiency for purification of wastewater were conducted with the most promising sample, i.e. organoclay with the highest specific loading of chelating agent. Experiments were conducted with model wastewater containing either individual …
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Produced Water Treament Using DAF With a Mixture of Ionic Liquids and Organoclay as Pre-treatment Chemicals
… actetate) (EMIMAc) and an organoclay(OC) (JC 9450) were used as coagulant initially in the process to determine the optimum removal efficiency of oil, COD and turbidity at 3 different concentrations for both coagulants, the relationship between TDS, Salinity and Conductivity …
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Biodegradable polymer/clay nanocomposites based on poly(butylene adipate-co-terephthalate) and Polylactide
… studied blends of PBAT and PLA compounded with organoclay through direct melt mixing in a twin-screw extruder and a batch mixer, determined the most compatible organoclay for this blend, evaluated the role of the particles on the physical properties and morphologies of the blends, compared …
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Processes controlling the behavior of LNAPLs at groundwater surface water interfaces
… explored to control LNAPL releases at GSIs was organoclay barriers. Herein, organoclay barriers are defined as vertical walls of organoclay-sand mixtures. Organoclay is hydrophobic and retains LNAPL via sorption. Using a "simple" organoclay barrier, breakthrough to surface water was observed …
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Feasibility of sustainable recycling of drill cutting as additive in flexible base
… methods were investigated: lime, cement, and organoclay. Lime reduced plasticity and limited total petroleum hydrocarbon (TPH) mobility but had minimal effect on semi-volatile organic compounds (SVOCs) and increased trace metal leaching. Cement significantly improved compressive strength but …
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Evaluation of reactive cap sorbents for in-situ remediation of contaminated sediments
… evaluated for use in a mat: activated carbon and organoclays. Several kinetic and isotherm studies have been conducted using several formulations of activated carbons and organoclays as sorbents to treat individual PCB congeners and PAHs. The results showed that preloading of sorbents with humic …
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Functionalization of nanoclays through exchange reactions
… clays was higher than that of a commercial organoclay and of clays modified in our group with smaller MW pyridinium and imidazolium based cations. 10 wt% of interchanged cation was found under selected time/temperature treatment conditions. Clays modified with the long chain phosphonium …
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Processing and Properties of Hybrid Silane-Epoxy Nanocomposite Coatings
… and evaluation of the properties of hybrid organoclay composites coatings and membranes. The control material used in this study is water based epoxy ester due to its low volatile organic content and better corrosion resistance than the epoxy resins. The use of epoxy ester is limited by its …
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Development of masterbatches for poly (ethylene terephthalate) with improved resistance to CO2 permeation
… produced by direct melt mixing of PET and organoclay were always intercalated in nature (with the exception of C30B and hexadecyl pyridinium surfactant where the layered structure collapsed due to degradation of the surfactant). A consistent interlayer spacing of ~3.15-3.25nm was observed …
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Development of fire retardant timber treatments
… A coherent barrier layer was formed by the organoclay; however, the improvement was not effective enough to warrant further investigation. Combinations of nanometric oxides and phosphoric acid were effective. The oxides catalysed the phosphoric acid mechanism to promote the pyrolysis of …
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Chemical modification of smectite clays
Today, speciality use organoclays are being developed for an increasingly large number of specific applications. Many of these, including use in cosmetics, polishes, greases and paints, require that the material be free from abrasive impurities so that the product retains a smooth `feel'. The …
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Preparation and characterisation of poly(ethylene terephthalate) and poly(vinyl alcohol)/clay nanocomposites.
… of PET and various, commercially available, organoclays have been prepared by solution intercalation and the structure of the resulting composite investigated in dependence of surfactant on the organoclay, clay loading, solvent, stirring time, polymer concentration, polymer type and drying …
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Thermo-analytical and physico-chemical characterisation of organoclays and polymer-clay nacomposites.
… treatments have been analysed. These organoclays have been characterised by XRD, TGA and TG-MS. The evolved gas analysis conducted by TG-MS was employed to identify which products were being thermally desorbed under thermal events previously seen when using TGA. In particular attention …
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Advanced Thermoplastic Nanocomposite Melt Processing Using an Improved Supercritical Carbon Dioxide Pretreatment for the Nanomaterial
… to nanoclay nanocomposites of Nylon 6/ and organoclay where the polymer may interact with the nanoclay surface. Second, the effect of scCO2 processing of CNTs was investigated with special consideration to the processing variables. Finally, a study was carried out to analyze the electrical …