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Observation of gelation process and particle distribution during sol-gel synthesis by particle image velocimetry

Krause, Jennifer and Lisinski, Susanne and Ratke, Lorenz and Schaniel, Dominik and Willert, Ch. and Altmeyer, S. and Woike, Theo and Voges, M. and Klinner, J. (2008) Observation of gelation process and particle distribution during sol-gel synthesis by particle image velocimetry. Journal of Sol-Gel Science and Technology, 45 (1), pp. 73-77. Springer Netherlands. doi: 10.1007/s10971-007-1624-9. ISSN 0928-0707 (Print) 1573-4846 (Online).

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Official URL: http://www.springerlink.com/content/l6717u66m53m8632/


The gelation of alcogels mixed with microparticles of the nonlinear optical material BaTiO3 was studied with Particle Image Velocimetry (PIV). It is shown that the distribution of the microparticles in the gel is homogeneous and that the gelation occurs continuously throughout the gel body. We demonstrate that PIV is a useful method to study the gelation kinetics: The transition from a colloidal solution to a gel can be measured without any assumption on the rheology of the colloidal solution. The detected linear decrease of the flow velocity with time is described as the linear part of the critical behavior.

Item URL in elib:https://elib.dlr.de/53214/
Document Type:Article
Title:Observation of gelation process and particle distribution during sol-gel synthesis by particle image velocimetry
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Krause, JenniferUniversität zu KölnUNSPECIFIEDUNSPECIFIED
Schaniel, DominikUniversität zu KölnUNSPECIFIEDUNSPECIFIED
Willert, Ch.Institut für AntriebstechnikUNSPECIFIEDUNSPECIFIED
Altmeyer, S.Fachhochschule KölnUNSPECIFIEDUNSPECIFIED
Woike, TheoUniversität zu KölnUNSPECIFIEDUNSPECIFIED
Voges, M.Institut für AntriebstechnikUNSPECIFIEDUNSPECIFIED
Klinner, J.Institut für AntriebstechnikUNSPECIFIEDUNSPECIFIED
Date:January 2008
Journal or Publication Title:Journal of Sol-Gel Science and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 73-77
Publisher:Springer Netherlands
ISSN:0928-0707 (Print) 1573-4846 (Online)
Keywords:Sol-Gel, Gelation, PIV, BaTiO3
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Materialwissenschaftliche Forschung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Lisinski, Susanne
Deposited On:06 Feb 2008
Last Modified:27 Apr 2009 14:43

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