Name: implication of amphiphilic dextran on the stability of emulsions (en Francés)
Price: 148340.00 CLP
Availability: InStock
Author: Covis-R
ISBN: 9786131584114

portada implication of amphiphilic dextran on the stability of emulsions (en Francés)

Formato

Libro Físico

Autor

Covis-R

Editorial

Omniscriptum

Año

2011

Idioma

Francés

N° páginas

280

Encuadernación

Tapa Blanda

Dimensiones

22.9 x 15.2 x 1.6 cm

Peso

0.41 kg.

ISBN

6131584117

ISBN13

9786131584114

Categorías

Historia y crítica literaria
Química física

implication of amphiphilic dextran on the stability of emulsions (en Francés)

Covis-R (Autor) · Omniscriptum · Tapa Blanda

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Reseña del libro "implication of amphiphilic dextran on the stability of emulsions (en Francés)"

A new family of amphiphilic dextran derivatives was obtained by reaction of 1,2-epoxydodecane on dextran in basic medium. Two reaction procedures were examined. Oil-in-water emulsions were prepared by sonication in the presence of different hydrosoluble derivatives. The size of the emulsion droplets increased with the oil volume fraction but did not depend on the substitution degree of modified dextran. These emulsions behave like a gel which strengthened with the oil volume fraction. Water-in- oil emulsions (water in chloroform) were obtained by sonication in the presence of organosoluble derivatives. Furthermore, dynamic emulsification process under shear flow was investigated for oil-in- water emulsions (hexadecane in water).Simultaneous in situ measurements of viscosity of emulsions and droplet size were performed. The characteristic time of emulsification depended on shear rate and viscosity ratio but was independent of the oil volume. For the newtonian system, final shear stress and final droplet size depended on the applied shear rate while they were invariant in the non newtonian system.