Shear induced structure in an associatively thickened latex investigated using parallel superposition / L. Costello in LES CAHIERS DE RHEOLOGIE, Vol. XV, N° 1 (10/1996)

[article]  inLES CAHIERS DE RHEOLOGIE > Vol. XV, N° 1 (10/1996) . - p. 301-306 Titre : Shear induced structure in an associatively thickened latex investigated using parallel superposition Type de document : texte imprimé Auteurs : L. Costello, Auteur Année de publication : 1996 Article en page(s) : p. 301-306 Note générale : Bibliogr. Langues : Français (fre) Catégories : Epaississants Latex Rhéologie Index. décimale : 532.05 Mécanique des fluides et des liquides - Dynamique (cinétique et cinématique) Résumé : The technique of parallel superposition has been to examine the formation of shear induced structures in an associatively thickened latex. In this technique a sample is subjected to simultaneous shear and oscillatory motions. Associative thickeners rely for their effect as viscosity enhancers by adsorbing onto the surfaces of more than one particle, in manner similar to that of bridging flocculants. It was found that an increase in the shear rate results in an increase in the high frequency limiting value of the storage modulus. This effect is ascribed to the compression or extension of thickener molecules away from their entropically favoured conformations when two dimensional structures are formed under shear. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26154 [article]

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