Temperature dependence of the polymorphous phases of nylon 6

Abstract

Abstract The α, γ, γ * polymorphous forms and the physical mixtures of the α and γ‐like forms of Nylon 6 were examined from room temperature up to the melting point by X‐ray diffraction techniques. The α‐ and γ * ‐forms evinced a more evident structural change as a function of temperature than the γ‐form. The study carried out on the polymorphous forms of Nylon 6 at temperatures higher than room temperature furnished new insights in comparison to usual annealing. The level of structural order and the specific aspects of the structure were found to be largely determinant for the equilibrium state in the polymorphous forms of Nylon 6 from room temperature up to the melting point.