Thermal degradation and isothermal crystallization behavior of curdlan propionate and its melt-spinning fiber

The thermal properties and crystallization kinetics of Curdlan propionate, a type bio-based plastic ?-1,3-glucan derivative, were investigated. Melt-spun fibers also prepared, the fiber formation mechanism internal structure analyzed. decrease curve in molecular weight suggests that degradation propionate likely proceeds by random scission. Polarized light microscopy isothermal process showed forms spherulite-like morphology, which is unusual among polysaccharides with rigid backbone chain. By optimizing melt spinning conditions, it was found possible to spin good spinnability using no plasticizer. rate significantly different between process. There positive correlation take-up speed, crystallinity, tensile strength fiber. A highly ordered structural model suggested from wide-angle x-ray diffraction results other measurements.