In this paper, the chemical structure of chitosan has been
modified by trans esterification reaction with methyl esters both of
octanoic and dodecanoic acid, using potassium carbonate as a based
catalyst, the degree of substitution has been determ
inated to change
hydrophilic properties, Some physical properties of trans
esterification products has been determined by measuring the
Kinematic viscosity, degree of turbidity and density of their water
solutions.
