Topic
Liquid paraffin
About: Liquid paraffin is a research topic. Over the lifetime, 6185 publications have been published within this topic receiving 52956 citations.
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01 Jan 2003
TL;DR: In this article, a multi-functional plate-like lamination that combines a thermal energy storage capability with a structural capability is described, which consists of a paraffin impregnated porous graphitic core (the energy storage volume) encapsulated between rigid graphite/epoxy composite skins.
Abstract: A novel multi-functional plate-like lamination that combines a thermal energy storage capability with a structural capability is described. The lamination consists of a paraffin impregnated porous graphitic core (the energy storage volume) encapsulated between rigid graphite/epoxy composite skins. Heat storage is via solid-liquid phase transition of the paraffin. Stacked laminations form a sandwich structure. A thermal response model shows that the graphite foam is an effective thermal conductivity enhancer to the imbedded paraffin. It will effectively immobilize liquid paraffin so that the thermal storage process will be unaffected by up to a 10g load. Furthermore, the foam can accommodate the relatively large specific volume change that accompanies paraffin phase transition. However, it does so at the expense of reduced thermal performance. Structural analysis shows that graphitic foam has a low strength and elasticity modulus, and the material displays tension-compression asymmetry. The paraffin fill is shown to increase the compressive ultimate strength and elasticity modulus. The use of carbon fiber/epoxy skin greatly enhances the overall strength of the structure.
22 citations
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TL;DR: In this article, the authors formulate and study two component or multicomponent compositions with a relatively low Brij 96V content, liquid paraffin, glycerol and water for therapeutic purposes, and the liquid crystals were examined by polarizing light microscopy and transmission electron microscopic observation of replicas produced by the freeze-fracture technique.
Abstract: Lamellar lyotropic liquid-crystalline systems are thermodynamically stable, optically isotropic and are formed spontaneously. New possibilities for the development of controlled drug delivery systems are inherent in these systems in consequence of their stability and special, skin-friendly structure. The aim was to formulate and study two-component or multicomponent compositions with a relatively low Brij 96V content, liquid paraffin, glycerol and water for therapeutic purposes. The liquid crystals were examined by polarizing light microscopy and transmission electron microscopic observation of replicas produced by the freeze–fracture technique to demonstrate the presence of lamellar liquid-crystalline domains. The existence of a regular structure was determined by X-ray diffraction.
22 citations
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TL;DR: The powder X-ray diffraction data indicated that the resulting talc consisted of no-stratified and random layered structure, and no solid acidity, i.e. no Bronsted and Lewis acid sites were found.
Abstract: “Two dimensional” talc was prepared by the hydrothermal reaction of various silicas with magnesium hydroxide. The precipitated and activated silicas were especially available as starting materials. The powder X-ray diffraction data indicated that the resulting talc consisted of no-stratified and random layered structure. According to the IR spectrum, no solid acidity, i.e. Bronsted and Lewis acid sites were found. The specific surface area was over 500 m2 g−1. A large amount of water was adsorbed and partially combined with the surface of lamellar talc. As a result, the artificial talc would receive applications such as emulsifying agents to the mixture of liquid paraffin and water.
22 citations
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TL;DR: In this paper, a "one-pot" strategy for synthesizing ZnSe nanocrystals (NCs) in liquid paraffin was proposed, which avoided the injection of Se source at high temperature.
Abstract: In this paper, we demonstrated a “one-pot” strategy for synthesizing ZnSe nanocrystals (NCs) in liquid paraffin. All materials, including Zn source, Se source, and ligand, were mixed in liquid paraffin beforehand, which avoided the injection of Se source at high temperature. The resultant ZnSe NCs possessed high photoluminescence quantum yields and narrow size distribution. Moreover, the size, shape, and crystal phase of NCs were controllable by altering the experimental variables, such as precursor concentration, Zn:Se molar ratio, and heating rate. Because the raw materials used here were low-cost and environmentally friendly, this “one-pot” synthetic protocol would facilitate the commercial scale synthesis of high-quality ZnSe NCs.
22 citations
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TL;DR: A simple and effective way to fabricate an underwater transparent miniature "mechanical hand" based on controllable oil-adhesive patterned glass using a femtosecond laser, which can be applied in the construction of microfluidic devices, in situ detectors, and bioreactors.
Abstract: Development of underwater superoleophobic surfaces has captured the imagination of researchers because of their applications; especially, oil manipulation based on such surfaces has attracted much attention. Here, we show a simple and effective way to fabricate an underwater transparent miniature “mechanical hand” based on controllable oil-adhesive patterned glass using a femtosecond laser. The underwater oil-adhesive force of the patterned glasses that compose the “mechanical hand” device can be controlled from ultralow to ultrahigh by adjusting the ratio of the untreated flat glass area to the laser-ablated rough area. These surfaces also showed favorable transparency in water. Various oils such as chloroform, hexadecane, n-dodecane, decane, liquid paraffin, and petroleum ether were tested, and their repellency against the as-prepared surfaces in water medium was confirmed. Moreover, the “mechanical hand” was used to implement oil transportation, fusion, and rapid capture, which can be applied in the co...
21 citations