Aerogels derived from multifunctional organic monomers

Conference · Sun Sep 01 00:00:00 EDT 1991

OSTI ID:6215626

Pekala, R W; Alviso, C T; Kong, F M; Hulsey, S S

Traditional inorganic aerogels are mad via the hydrolysis and condensation of metal alkoxides. Recently, we reported the synthesis of organic aerogels based upon the aqueous polycondensation of (1) resorcinol with formaldehyde and (2) melamine with formaldehyde. The former materials can also be pyrolyzed in an inert atmosphere to form vitreous carbon aerogels. In both the inorganic and organic systems, the structure and properties of the dried aerogel are dictated by polymerization conditions. Factors such as pH, reactant ratio, and temperature influence the crosslinking chemistry and growth processes taking place prior to gelation. The ability to tailor the structure and properties of aerogels at the nanometer scale opens up exciting possibilities for these novel materials. This paper addresses the chemistry-structure-property relationships of organic aerogels. 22 refs., 7 figs.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6215626
• Report Number(s): UCRL-JC-108602; CONF-910960-2; ON: DE92003060
• Resource Relation: Conference: 3. international symposium on aerogels, Wuerzburg (Germany), 30 Sep - 2 Oct 1991
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
ALKOXIDES
HYDROLYSIS
GELS
CHEMICAL PREPARATION
MONOMERS
POLYMERIZATION
CARBON
FORMALDEHYDE
MECHANICAL PROPERTIES
MELAMINE
RESORCINOL
SOL-GEL PROCESS
ALDEHYDES
AMINES
AROMATICS
AZINES
CHEMICAL REACTIONS
COLLOIDS
DECOMPOSITION
DEVELOPERS
DISPERSIONS
ELEMENTS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
LYSIS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHENOLS
POLYPHENOLS
SOLVOLYSIS
SYNTHESIS
TRIAZINES
400201* - Chemical & Physicochemical Properties
360601 - Other Materials- Preparation & Manufacture
360602 - Other Materials- Structure & Phase Studies