Influence of temperature on the slip velocity of semidilute xanthan gum solutions

Título traducido de la contribución: Influencia de la temperatura en la velocidad de deslizamiento de soluciones de goma de xantana semidiluidas

Miguel Angel Valdez, Laura Yeomans, Francisco Montes, Heriberto Acuña, A. Ayala

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

12 Citas (Scopus)

Resumen

We obtain experimental evidence of the influence of temperature in the range 12-32°C on the slip phenomena of two different 0.3% xanthan solutions in a glass capillary rheometer. Enhancement of the slip velocity was observed for both samples around the corresponding thermally induced order-disorder transition temperature. Intrinsic viscosity measurements were performed to find the conformation change of both samples. Concentrations of 0.15% and 0.2% were analyzed for one sample, showing absence of slip at 0.15%. Slip velocity measurements were determined with the traditional Mooney method for a L/D ratio of the capillaries (640) enough to neglect entry head losses. Comparisons were done with the method developed by Piau et al. (1990) and with the one developed by Hatzikiriakos and Dealy (1992). The resulting behavior of the slip velocity with the capillary diameters, calculated with the method of Hatzikiriakos and Dealy, was contrary to the behavior experimentally found by other authors. The observed differences in the slip velocity, measured with the other two methods, were proportional and nearly independent of temperature and diameter of the capillaries. © 1995 Steinkopff Verlag.
Título traducido de la contribuciónInfluencia de la temperatura en la velocidad de deslizamiento de soluciones de goma de xantana semidiluidas
Idioma originalInglés
Páginas (desde-hasta)474-482
Número de páginas9
PublicaciónRheologica Acta
Volumen34
DOI
EstadoPublicada - 1 sep 1995

Huella

Profundice en los temas de investigación de 'Influencia de la temperatura en la velocidad de deslizamiento de soluciones de goma de xantana semidiluidas'. En conjunto forman una huella única.

Citar esto