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| Titel: |
ADSORPTION BEHAVIOUR AND RHEOLOGICAL PROPERTIES OF NON-AQUEOUS LANTHANUM CHROMITE SUSPENSIONS |
| Auteur: |
Stakkestad, G. Bergflødt, L. |
| Verschenen in: |
Journal of dispersion science and technology |
| Paginering: | Jaargang 21 (2000) nr. 2 pagina's 129-143 |
| Jaar: |
2000 |
| Inhoud: |
Adsorption studies of monosubstituted benzene molecules with various functional groups on doped lanthanum chromite/cyclohexane surface have been performed. The results from the adsorption study can be used in selecting appropriate anchoring groups on the dispersant. It was found that high amount of O relative lo La on the LaCrO3 surface correlated with high amounts of adsorbed benzoic acid. Increase in the La content relative to the O on the powder surface increased the amount of adsorbed benzylamine. The high amount of benzoic acid adsorbed on 20% Ca-doped lanthanum chromite powder (Al)lated well with good colloidal stability caused by a carboxylic acid containing dispersant. Rheology experiments showed that a low degree of agglomeration is obtained using only a small amount of the carboxylic acid containing dispersant (Hypermer LP1). Etectrophoretic mobility measurements in water of this powder coated with the LP1 dispersant indicated electrosteric stabilisation. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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