http://www.cnr.it/ontology/cnr/individuo/prodotto/ID276772
The central role of interparticle forces in colloidal processing of ceramics (Contributo in volume (capitolo o saggio))
- Type
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- The central role of interparticle forces in colloidal processing of ceramics (Contributo in volume (capitolo o saggio)) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
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Davide Gardini, Carlo Baldisserri, Carmen Galassi (2013)
The central role of interparticle forces in colloidal processing of ceramics
CRC Press - Taylor & Francis Group, London (Regno Unito) in Colloid and Interface Chemistry for Nanotechnology, 2013
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Davide Gardini, Carlo Baldisserri, Carmen Galassi (literal)
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- Colloid and Interface Chemistry for Nanotechnology (literal)
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- CNR-ISTEC Faenza (literal)
- Titolo
- The central role of interparticle forces in colloidal processing of ceramics (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
- 978-1-4665-6905-8 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume
- P. Kralchevsky, R. Miller, F. Ravera (literal)
- Abstract
- In this chapter, some literature examples will be considered to illustrate the application
of such concepts to the control of interparticle interactions in ceramic suspensions.
In most applications, the main reason for such a control is to avoid the
formation of hard agglomerates, because these cause defects to be present in the
sintered bodies, with consequent risk of cracking.
Both water-based suspensions and suspensions in organic solvents will be considered
in the following paragraphs. Although literature studies are available on both
types of suspensions, full understanding of the basic mechanisms of colloidal stabilization
is still lacking. Cases in point are the electrosteric stabilization of aqueous
suspensions by polyelectrolytes and the stabilization of solvent-based suspensions by
surfactants. In advanced shaping techniques like direct coagulation casting (DCC)
or temperature-induced gelation (TIG), the creation of gels is a required processing
step, in which case interparticle interactions are specifically driven toward the
formation of three-dimensional structures by controlling either pH or temperature,
respectively. One of the commonly used techniques to obtain indirect information
about the degree of structuring of these complex systems is rotational rheometry,
whose main features will be briefly described. (literal)
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