Theoretical modelling of the structural evolution of gels

In the preparation of oxides by the sol-gel route, it has been observed that the viscosity increases with time. Throughout this process, the molecular weight of species is also increasing. Theoretical models are proposed to elucidate the structural evolution of gels utilizing measurements of viscosi...

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Veröffentlicht in:	Journal of non-crystalline solids 1988, Vol.101 (2), p.198-212
Hauptverfasser:	Pope, Edward J.A., Mackenzie, J.D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aerosols Chemistry Colloidal gels. Colloidal sols Colloidal state and disperse state Emulsions. Microemulsions. Foams Exact sciences and technology General and physical chemistry Powders
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	In the preparation of oxides by the sol-gel route, it has been observed that the viscosity increases with time. Throughout this process, the molecular weight of species is also increasing. Theoretical models are proposed to elucidate the structural evolution of gels utilizing measurements of viscosity vs. time dependencies. Two models, one for nearly linear growth and another for fractal growth, are presented.
ISSN:	0022-3093 1873-4812
DOI:	10.1016/0022-3093(88)90155-X