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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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TL;DR: A green and sustainable strategy for the combined design containing both lubrication and photocatalytic degradation at different stages of base oils has been suggested in this paper, where Fe3O4@MoS2 nanohybrid was prepared and used as an additive for liquid paraffin (LP), resulting in enhanced lubricating properties together with significant degradation performance.
Abstract: In this work, a green and sustainable strategy for the combined design containing both lubrication and photocatalytic degradation at different stages of base oils has been suggested. More concretely, Fe3O4@MoS2 nanohybrid was prepared and used as an additive for liquid paraffin (LP), resulting in enhanced lubricating properties together with significant photocatalytic degradation performance. The nanohybrid was prepared via a hydrothermal method, which was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive spectrometer (EDS), and ultraviolet–visible (UV–vis) spectroscopy. The frictional properties together with photocatalytic degradation behaviors of LP mixtures containing MoS2, Fe3O4, and Fe3O4@MoS2 nanohybrid were under a comparative investigation. The results show that the LP mixture containing 0.08 wt % of Fe3O4@MoS2 nanohybrid can achieve the maximum reduction of friction coefficient; while that containing 0.10 wt % ...
25 citations
TL;DR: Internodes are virtually impermeable, but nodes of senesced and living culms are permeable to oils which can block pith cavity diaphragms, preventing flows at applied pressures of 1 kPa, natural convective transport to the rhizome, and greatly decreasing ROL to phyllospheres and rhizospheres.
25 citations
Patent•
05 Mar 1997
TL;DR: In this article, the authors proposed a subject composition consisting of 40 to 90% of a hydrophobic ointment base, water-soluble polymer, medicine and light silicic anhydride.
Abstract: PROBLEM TO BE SOLVED: To obtain the subject composition, high in adhesivity to the affected part, especially in local persistence in the affected part, and showing an excellent treatment effect for an extended period, by including a hydrophobic ointment base, water-soluble polymer, medicine and light silicic anhydride. SOLUTION: This composition comprises (A) 40 to 90wt.% of a hydrophobic ointment base (e.g. liquid paraffin), (B) 5 to 50wt.% of a water-soluble polymer (e.g. sodium carboxymethylcellulose), (C) 0.05 to 10wt.% of a medicine (e.g. hydrocortisone), and (D) 1 to 10wt.% of light silicic anhydride (e.g. brand name: Aerosil). Preferably, the component B/component A weight ratio is (3:2) to (1:25) and the component D/component B weight ratio is (2:1) to (1:30). COPYRIGHT: (C)1998,JPO
25 citations
TL;DR: A series of ferrofluids were made using oleic acid-capped Co3O4 (cobalt oxide) nanoparticles in liquid paraffin by a high-energy milling/sonication method as mentioned in this paper.
Abstract: A series of ferrofluids were made using oleic acid-capped Co3O4 (cobalt oxide) nanoparticles in liquid paraffin by a high-energy milling/sonication method. The average physical size of the dry Co3O4 nanoparticles was determined to be 21 nm by measuring the peak broadening of the (311) crystal plane from X-ray diffraction data of the nanopowder. The results of measurements by an alternative gradient force magnetometer indicated that the dry nanoparticles were paramagnetic. The prepared colloids were characterized by dynamic light scattering and found to contain aggregated nanoparticles having between 51 and 835 individual particles per aggregate. The rheological properties of these ferrofluids were then studied using a standard rotating rheometer, both in the presence and absence of an externally applied magnetic field. Magnetoviscous and thixotropic effects on the ferrofluids viscosity were studied as both the nanoparticle concentration and the applied magnetic field was varied. Nanoparticle aggregation and its effect on the rheological properties of these ferrofluids is discussed (i.e. the interactions between nanoparticles and aggregates). At nanoparticle concentrations above 30 wt%, a combined thixotropic/magnetoviscous effect on the fluids viscosity was observed. The ferrofluids exhibited a thixotropic behaviour with little magnetoviscous effect at more dilute nanoparticle concentrations, 25 wt%.
25 citations
TL;DR: In this work, pigeon feathers were utilized to fabricate a highly porous keratin sponge in a very simple way by freeze-drying treatment of the dissolved keratin solution, and applied for the first time as an oil adsorbent.
Abstract: In this work, pigeon feathers, a kind of totally waste by-product from the poultry industry, were utilized to fabricate a highly porous keratin sponge in a very simple way by freeze-drying treatment of the dissolved keratin solution, and applied for the first time as an oil adsorbent. An improved method was proposed to dissolve the feather keratin using the inexpensive sodium disulfite as the reducing reagent for sulfitolysis reaction, with a much lower concentration of all involving reaction regents. Moreover, the regenerated keratin sponges obtained a high oil adsorption capacity of above 30 g/g for both liquid paraffin and soybean oil, as well as a good oil holding ability, suggesting that this keratin sponge might be a potential for use as oil adsorbent.
25 citations