Structure Development during the Heat-Draw Process of Nylon 66 Fiber by Synchrotron X-ray Diffraction
نویسندگان
چکیده
On-line studies of structural development during continuous drawing of nylon 66 fiber at different temperatures were carried out using synchrotron wide-angle X-ray diffraction (WAXD). A unique image analysis method was introduced to analyze the two-dimensional (2D) WAXD patterns. The quantitative fractions of crystal, mesomorphic and amorphous phases were obtained. In this study, the Brill transition during nylon 66 fiber deformation was observed. From our analysis, we confirmed the existence of a premelting process in the vicinity of the Brill temperature. However, this premelting process may not have any correlation with the Brill transition. Results also indicate that drawing can stabilize the crystal and mesomorphic phases.
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