Critical exponents for the sol-gel transition

Journal Article · Sat Aug 15 04:00:00 EDT 1987 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.36.1803· OSTI ID:5954175

Martin, J E; Wilcoxon, J; Adolf, D

Solutions of tetramethoxysilicon were reacted, using both acid and base as catalysts, until near the sol-gel transition. Portions of the reacting mixture were quenched by dilution, and the average cluster mass and correlation length were measured with use of static and dynamic light scattering. Critical exponents describing the divergences of the average mass and correlation length were found to be larger than the predictions of either the percolation or Flory-Stockmayer theory.

• Research Organization: Sandia National Laboratories, Albuquerque, New Mexico 87185
• OSTI ID: 5954175
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 36:4; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKOXY RADICALS
CHEMICAL REACTION KINETICS
COLLOIDS
CORRELATED-PARTICLE MODELS
DISPERSIONS
DISTRIBUTION
GELATION
KINETICS
LIGHT SCATTERING
MATHEMATICAL MODELS
MEASURING METHODS
METHOXY RADICALS
ORGANIC COMPOUNDS
ORGANIC SILICON COMPOUNDS
PARTICLE MODELS
PARTICLE SIZE
RADICALS
REACTION KINETICS
SCATTERING
SIZE