Monomer-addition growth with a slow initiation step: A growth model for silica particles from alkoxides

Themis Matsoukas, Erdogan Gulari

Research output: Contribution to journalArticlepeer-review

164 Scopus citations

Abstract

A simplified monomer-addition model with a first-order activation step is developed to describe the dynamics of growth of silica particles from alkoxides. In the limit of slow hydrolysis, we obtain expressions for the evolution of the particle mass and particle polydispersity, as well as an expression for the particle size as a function of the hydrolysis rate constant, the polymerization rate constant, and the initial concentration of the orthosilicate. We find that the formation of the particles is adequately modeled by a reaction limited growth.

Original languageEnglish (US)
Pages (from-to)13-21
Number of pages9
JournalJournal of Colloid And Interface Science
Volume132
Issue number1
DOIs
StatePublished - Oct 1 1989

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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