X-RAY SHIELDING MATERIAL AND METHOD OF PREPARATION THEREOF

A process for synthesis of barium bismuth sulfide nanofibers includes: dissolving barium nitrate, bismuth nitrate pentahydrate and thiourea in a solvent system to obtain a dispersion containing complex of barium bismuth sulfide; mixing at least one surfactant in the dispersion under continuous agita...

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Hauptverfasser:	PANMAND, RAJENDRA P, AMLANERKAR, DINESH P, AMBEKAR, JALINDAR D, CHATTERJEE, SANDIP, KALE, BHARAT B, NAIK, SONALI D, APTE, SANJAY K, KAWADE, UJJWALA, SONAWANE, RAVINDRA S, SHROFF, NILOFER, KULKARNI, MILIND V
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS DYES INORGANIC CHEMISTRY METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES PREPARATION OF CARBON BLACK THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:	A process for synthesis of barium bismuth sulfide nanofibers includes: dissolving barium nitrate, bismuth nitrate pentahydrate and thiourea in a solvent system to obtain a dispersion containing complex of barium bismuth sulfide; mixing at least one surfactant in the dispersion under continuous agitation to obtain a mixture; heating the mixture at a temperature ranging between 120 C and 180 C in an apparatus for 24 hours followed by cooling at a temperature ranging between 20 C and 30 C to obtain a precipitate; and washing the precipitate by employing at least one solvent selected from the group consisting of water, ethanol, methanol, isopropanol and acetone to obtain nanofibers of barium bismuth sulfide. The barium bismuth sulfide nanofibers may have an equivalent shielding capacity as lead. Radiation shielding articles and cosmeceuticals are also disclosed. La présente invention concerne un procédé pour la synthèse de nanofibres de sulfure de baryum-bismuth ayant une capacité de blindage équivalente à celle du plomb. L'invention concerne aussi des articles et cosméceutiques de blindage contre les rayonnement.