Organic aerogels: A new type of ultrastructured polymer
Organic aerogels with different ultrastructures can be successfully synthesized from the aqueous sol-gel polymerization of (1) resorcinol with formaldehyde or (2) melamine with formaldehyde. In addition, RF aerogels can be pyrolyzed in an inert atmosphere to give vitreous carbon aerogels. The (resorcinol)/(sodium carbonate) ratio is the major variable in the RF polymerization while pH and acid type regulate the MF polymerization. Mechanical property, TEM, and surface area data provide evidence that organic aerogels are similar to their silica counterparts. Based upon these data, we are continuing to explore commonalities between inorganic and organic aerogels so that a universal model might be developed for the structure and properties of these unique materials. Such a model would have a major impact upon the materials science community by opening up new routes for the nanodesign of microporous materials with novel compositions, ultrastructures, and properties. 33 refs., 8 figs.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6171933
- Report Number(s):
- UCRL-JC-106520; CONF-910291-1; ON: DE91008500
- Resource Relation:
- Conference: 5. international conference on ultrastructure processing of ceramics, glasses, composites and advanced optical materials, Orlando, FL (USA), 17-21 Feb 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FOAMS
CHEMICAL PREPARATION
FORMALDEHYDE
POLYMERIZATION
MELAMINE
RESORCINOL
MECHANICAL PROPERTIES
OPTICAL PROPERTIES
PARTICLE STRUCTURE
PH VALUE
SODIUM CARBONATES
SURFACE AREA
ALDEHYDES
ALKALI METAL COMPOUNDS
AMINES
AROMATICS
AZINES
CARBON COMPOUNDS
CARBONATES
CHEMICAL REACTIONS
COLLOIDS
DEVELOPERS
DISPERSIONS
HETEROCYCLIC COMPOUNDS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHENOLS
PHYSICAL PROPERTIES
POLYPHENOLS
SODIUM COMPOUNDS
SURFACE PROPERTIES
SYNTHESIS
TRIAZINES
360602* - Other Materials- Structure & Phase Studies
360603 - Materials- Properties