Influence of the reaction time and the TritonX-100/cyclohexane/methanol/H2O ratio on the morphology and size of silica nanoparticles synthesized via sol-gel assisted by reverse micelle microemulsion. Synthesis of spherical zirconia by precipitation between two water/oil emulsions. Polyelectrolyte-modified microemulsions as new templates for the formation of nanoparticles. Ultrafine metal particle formation in reverse micellar systems:effects of intermicellar exchange on the formation of particles. Qingdao:Qingdao University of Science and Technology, 2013. Preparation and characterization of barium sulfate nanoparticles. Dextran-encapsulated barium sulfate nanoparticles prepared for aqueous dispersion as an X-ray contrast agent. Co-producing iturin a and poly-c-glutamic acid from rapeseed meal under solid state fermentation by the newly isolated Bacillus subtilis strain 3-10. An ion-exchange approach to the crystal design of barium sulfate in the presence of ionic surfactants. Key words: reverse microemulsion, nanoparticles, uniform, quasispheres, synthesis, size distribution Under the reaction conditions, the size of BaSO 4 nano-quasispheres was 18-22 nm, and the yield was 87.5%. The results show that under room temperature, using double microemulsion method, R=17.97, P between 2.11-4.22 is the best reaction condition for the synthesis of BaSO 4 quasispheres, and the reactant concentration had little effect on the size and morphology of BaSO 4 quasispheres. At the same time, the effects of the R on the size and size distribution of micro-emulsion droplets were investigated by dynamic light scattering (DLS). The effects of three reaction modes,/ molar ratio ( R), reactant concentration and/ molar ratio ( P) on the size and morphology of BaSO 4 quasispheres were investigated. The product was characterized by XRD (X-ray diffraction), SEM (scanning electron microscope), TEM (transmission electron microscope) and FTIR (Fourier transform infrared spectroscopy). Stable boundary water is detected at the microemulsion interface.Uniform nano BaSO 4 quasispheres were prepared by precipitation reaction with barium chloride and sodium sulfate as raw materials in reverse microemulsion composed of aqueous solution/TritonX-100/ n-hexanol/cyclohexane. In addition, an n-hexanol/cyclohexane mixture with an alcohol molar fraction of 0.177 has been titrated with water, revealing the formation of a microemulsion containing water droplets that evolves to a bicontinuous microemulsion with increasing water content. NIR allows verifying the formation of n-hexanol polymeric species. 1D, DOSY, and T1and T2relaxation time analyses by 1H-NMR allow understanding the dynamics of the mixtures. Molecular interactions are found to be dominated by dispersion forces, hydrogen bonding, and dipolar interactions, to different extents at different n-hexanol composition ranges. Abrupt changes on spectroscopic responses have been observed at low molar fractions of n-hexanol, which are related to hydrogen bond network formation that includes trace water. Stable boundary water is detected at the microemulsion interface.ĪB - In this work we present a study on the association of n-hexanol in cyclohexane using NMR and NIR spectroscopies. N2 - In this work we present a study on the association of n-hexanol in cyclohexane using NMR and NIR spectroscopies. T1 - N-Hexanol association in cyclohexane studied by NMR and NIR spectroscopies
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