Thermal Properties of α- and γ-Forms of Nylon 6

摘要: Multiple melting behavior in nylon 6 is analyzed by means of a high temperature X-ray camera (HTXC) and differential scanning calorimeter (DSC). Melting the intermediate phase between crystalline amorphous ones supposed to contribute higher peak DSC. The recrystallization process confirmed for α-form specimen. On basis two-phase model, following thermodynamical quantities are self-consistently determined α- γ-forms respectively; heat fusion, 41 33 cal/g, surface free energy, 57 47 erg/cm2 equilibrium temperature, 272 272°C. found be more stable than γ-form whole region below temperature.