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Title: Effect of dispersants on the rheology of aqueous silicon carbide suspensions
Authors: Zhang, Yongheng
Binner, J.G.P.
Keywords: Rheology
Issue Date: 2008
Publisher: © Elsevier
Citation: ZHANG, Y. and BINNER, J.G.P., 2008. Effect of dispersants on the rheology of aqueous silicon carbide suspensions. Ceramics international, 34 (6), pp.1381-1386
Abstract: The effect of cationic and anionic dispersants on aqueous suspensions of as-received and surface-modified silicon carbide particles has been studied via observation of the rheological behaviour. Only the cationic dispersants were effective for the as-received SiC, with polyethyleneimine being superior to Hyamine 2389 probably as a result of a greater electrosteric interaction. SiC particles modified using Al(NO3)3 behaved like alumina and so could be dispersed using the anionic dispersants ammonium polyacrylate and polymethacrylate. Such dispersions displayed no heteroaggregation when alumina was added, although the order of mixing could significantly affect the rheological behavior of the suspension. Nevertheless, the suspensions appeared robust to slight fluctuations in pH.
Description: This is a journal article. It was published in the journal, Ceramics international [© Elsevier] and the definitive version is available at: http://www.sciencedirect.com/science/journal/02728842 or doi:10.1016/j.ceramint.2007.03.030
URI: https://dspace.lboro.ac.uk/2134/3455
ISSN: 0272-8842
Appears in Collections:Published Articles (Materials)

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