TY - JOUR
T1 - Monomer-addition growth with a slow initiation step
T2 - A growth model for silica particles from alkoxides
AU - Matsoukas, Themis
AU - Gulari, Erdogan
N1 - Funding Information:
We thank Dennis Vigil and Bob Ziff for their helpful comments; Ed McGrady and Kristen Fichthorn for critically reading this manuscript. Financial support for this work by the NSF under Grant CBT 8701781 is gratefully acknowledged. The analytical scanning transmission electron microscope used in this work was aquired under Grant DMR-77-09643 from the National Science Foundation.
PY - 1989/10/1
Y1 - 1989/10/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=45249131130&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=45249131130&partnerID=8YFLogxK
U2 - 10.1016/0021-9797(89)90210-5
DO - 10.1016/0021-9797(89)90210-5
M3 - Article
AN - SCOPUS:45249131130
SN - 0021-9797
VL - 132
SP - 13
EP - 21
JO - Journal of Colloid And Interface Science
JF - Journal of Colloid And Interface Science
IS - 1
ER -