Percolation Theory and Elastic Modulus of Gel

Abstract

Dynamic shear modulus of casein gel was measured slightly above the gelation concentration as functions of frequency and concentration. The results show that the shear modulus G is expressed by G = C · ε t , where ε is the reduced concentration in reference to the gelation concentration. The exponent t is found to be constant at lower frequency region and is close to the value expected from the percolation theory.