Silica sol as a nanoglue: Flexible synthesis of composite aerogels

Science

Volumn 284, Issue 5414, 1999, Pages 622-624

  Morris, Catherine A ^a   Anderson, Michele L ^a   Stroud, Rhonda M ^a   Merzbacher, Celia I ^a   Rolison, Debra R ^a  

^a NAVAL RESEARCH LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AEROGELS; GELATION; PARTICLES (PARTICULATE MATTER); POROSITY; SILICA; SYNTHESIS (CHEMICAL); TRANSPORT PROPERTIES;

SILICA SOLS;

SOLS;

NANOPARTICLE; SILICON DIOXIDE;

ARTICLE; BULK DENSITY; CATALYST; COLLOID; ELECTRONICS; GEL; MOLECULAR INTERACTION; PARTICLE SIZE; PHASE TRANSITION; PHYSICAL CHEMISTRY; POROSITY; PRIORITY JOURNAL; SOLID STATE; SUPERCRITICAL FLUID EXTRACTION; SYNTHESIS;

EID: 0033597436     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.284.5414.622     Document Type: Article

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50. The ability to achieve conduction paths through carbon - (base-catalyzed) silica composite aerogels also demonstrates the importance of using an about-to-gel silica sol before introducing the particulate guest. We find that when the mixing or contact time between the silica oligomers and the carbon increases, electronic paths cannot be established, even for base-catalyzed silica.
51. Supported by DARPA (Defense Advanced Research Projects Agency) and the Office of Naval Research (ONR). M.L.A. acknowledges a postdoctoral fellowship from ASEE (American Society for Engineering Education)-ONR. Helpful discussions with K. E. Swider Lyons and N. Leventis are gratefully acknowledged.