Coefficient de non linearite B/A dans les solutions glucidiques

摘要

In this paper, the interaction between the solvent and the solute is described using the B/A nonlinear parameter. The molecular interaction potentiel and the bounded water ratio give major contribution to this parameter. In this model, we put forward the contribution of free and bounded water to nonlinear effects. A method for the evaluation of the nonlinearity effects is also presented, which makes use of the measurement of the B/A coefficient in saccharides solutions via an acousto-optic technique. Le but de notrc travail est de decrire 1'interaction solute-solvanta travers le caicul du coefficient de non linearite B/A, base surle potentield'interactionmoleculaireetsurle volumespecifiqued'eau liee. Dansce modele, nousavons mis en evidence la contribution de l'eau libre et de l'eau liee aux effets non lineaires. Nous presentons egalementune methode devaluation du coefficient B/A dans les solutions aqueu.ses de glucides, basee stir une technique acousto-optique.