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Rheological properties of palygorskite–bentonite and sepiolite–bentonite mixed clay suspensions

Christidis Georgios, Yadeta C. Chemeda, Eleni Koutsopoulou, Tauhid Belal Khan, N.M. Tauhid Khana, Vicky Hatzistamou

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URIhttp://purl.tuc.gr/dl/dias/7DC4B4E7-5167-4E3C-B6FE-1985C2D86FDB-
Identifierhttps://doi.org/10.1016/j.clay.2013.12.013-
Languageen-
Extent9 pagesen
TitleRheological properties of palygorskite–bentonite and sepiolite–bentonite mixed clay suspensionsen
CreatorChristidis Georgiosen
CreatorΧρηστιδης Γεωργιοςel
CreatorYadeta C. Chemedaen
CreatorEleni Koutsopoulouen
CreatorTauhid Belal Khanen
CreatorN.M. Tauhid Khanaen
CreatorVicky Hatzistamouen
PublisherElsevieren
Content SummaryThis study examines the influence of layer charge and smectite content on the rheological properties of mixed bentonite–palygorskite suspensions. Eight bentonite samples containing smectite with layer charge ranging between 0.38 and 0.54 e/huc were used to prepare 5% w/v mixed palygorskite–bentonite aqueous suspension at pH 7. The influence of smectite on the apparent viscosity and yield point of palygorskite suspensions depends on the proportion of the smectite in themixture and the layer charge and charge localization of the smectite. The interaction between the two endmember clayminerals ismaximumat low percentage (10 to 20%) of bentonite in the mixture. Low charge and high charge smectite tended to improve and deteriorate, respectively, the yield point and apparent viscosity of the suspension. This behaviour seemed to be related to the influence of layer charge of smectite on the degree of delamination and the thickness of smectite quasicrystals,which consequently determine the number of particles involved in the interaction and the strength of particle–particle linkages.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2015-10-01-
Date of Publication2014-
Bibliographic CitationY. C. Chemeda , G.E. Christidis , N.M. T. Khana, E. Koutsopoulou , V. Hatzistamou , V.C. Kelessidis ,"Rheological properties of palygorskite– bentonite and sepiolite–bentonite mixed clay suspensions ",Ap. C. Sc. ,vol. 90 ,pp.165–174 ,2014.doi :10.1016/j.clay.2013.12.013en

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