HOLLOW SILICA NANOPARTICLES AS WELL AS SYNTHESIS PROCESSES AND APPLICATIONS THEREOF

• Main Authors: DU, HUI, K, ALTMAN, IGOR, KAMBE, NOBUYUKI, CHIRUVOLU, SHIVKUMAR, MOSSO, RONALD, J, LI, WEIDONG
• Format: Patent
• Language: English; French
• Published: 03.07.2008
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; MANUFACTURE OR TREATMENT THEREOF; METALLURGY; NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS,MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES ASDISCRETE UNITS; NANOTECHNOLOGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS; THEIR RELEVANT APPARATUS; TRANSPORTING

Hollow silica nanoparticles can have well defined non-porous shells with low shell fragmentation and good dispersability. These well defined hollow particles can be formed through the controlled oxidation of silicon nanoparticles in an organic solvent. The hollow nanoparticles can have a submicron secondary particle sizes. The hollow silica nanoparticles can be incorporated into polymer composites, such as low index-of- refraction composites, for appropriate applications. L'invention porte sur des nanoparticules de silice creuses qui peuvent avoir des enveloppes non poreuses bien définies avec une faible fragmentation d'enveloppe et une bonne aptitude à la dispersion. Ces particules creuses bien définies peuvent être formées par l'oxydation contrôlée des nanoparticules de silicium dans un solvant organique. Les nanoparticules creuses peuvent avoir des dimensions submicroniques de particules secondaires. Les nanoparticules de silice creuses peuvent être incorporées dans des composites polymères, tels que des composites à faible indice de réfraction, pour des applications appropriées.