The Stress Relaxation of Concentrated Polyγ-Benzyl-l-Glutamate

Abstract

The effect of temperature and concentration on the relaxation of poly 'Y-benzyl-Lglutamate (PBLG-mol. wt. 394,000 to 397,000) was examined as a model of protein behavior under "stress" leading to the definition of intra-and inter-molecular forces involved. The relaxation of PBLG, unlike that of the random coil polymers, takes places in two stages. The lower the temperature and concentration of the polymer, the greater is the shift of the inflexion point towards the lower.vt values.The distribution spectrum of relaxation has a three zone characteristic. The possible significance of each of them is discussed.