Crystallization and Tensile Strength of Vulcanized Natural Rubber Compounds

Abstract The effect which changes in the degree of cross-linking have on the crystallization of stretched rubber has been studied by observing the densities of a series of peroxide-cured natural rubber compounds. It was found that at any one elongation, crystallization first increased and then decreased with increase in the degree of cross-linking. The significance of this maximum and the relation between crystallization and tensile strength are discussed.