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Comptes Rendus Physique
Volume 8, n° 1
pages 115-120 (janvier 2007)
Doi : 10.1016/j.crhy.2006.11.007
Received : 28 May 2006 ;  accepted : 21 November 2006
Cinétique dʼagrégation en chaînes dans une suspension colloïdale soumise à un champ électrique alternatif
Kinetic aggregation into chains from a colloidal suspension in an AC field
 

Zineb Mimouni
Laboratoire dʼinstrumentation, de métrologie et des procédés, faculté des sciences et techniques - Guéliz, BP 549, 40000 Marrakech, Maroc 

Résumé

Nous présentons des résultats sur la structuration dʼune suspension colloïdale sous lʼeffet dʼun champ électrique alternatif. La croissance des fibrilles est étudiée par un dispositif dʼanalyse dʼimage qui a permis la détermination de la loi temporelle de la formation des chaînes de particules, à différentes intensités du champ appliqué. De même, lʼeffet du changement de la fréquence a été étudié. Pour citer cet article : Z. Mimouni, C. R. Physique 8 (2007).

The full text of this article is available in PDF format.
Abstract

We present results about the aggregation of a colloidal suspension in an AC electrical field. The growth of the chains obtained is studied by image analysis. This method allows the determination of the time dependency of this aggregation, with different applied field intensities. Also, the effect of the frequency variation is studied. To cite this article: Z. Mimouni, C. R. Physique 8 (2007).

The full text of this article is available in PDF format.

Mots-clés : Suspension colloïdale, Champ électrique, Agrégation, Analyse dʼimages

Keywords : Colloidal suspension, Electric field, Aggregation, Image analysis




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