JOURNAL of the Tunisian Chemical Society

serving the Research, the Education and the Industry

Détermination de la diffusivité de l’eau au sein d’un gel de gélatine

Written by sctunisie no comments

An experimental and mathematical study of the diffusion of water was carried out in order to optimize the criteria related to quality and energy during drying of a sample of a Gelatine gel by convection and a radiating contribution of the High Frequencies (Microwaves and Infrared). The results, within the framework of this first part of research, allowed:

  • to determine a mathematical expression describing the dependence of the coefficient of diffusion versus the moisture of the product in the studied case
  • to highlight the "undeniable" effect of the vitreous transition along an isothermal axis on the dependence from material diffusivity according to the moisture of the medium
  • to calculate the coefficient of mutual diffusion of water and the constants of WLF.

F. Zagrouba

Gelatine, Diffusivity, Sorption, Vitreous Transition, Viscoelastic

Pages 327-333

Comments are closed.

Rss feed of the article's comments