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

研究了一种生物基塑料和β-1,3-葡聚糖衍生物丙酸Curdlan丙酸酯的热学性质和结晶动力学。还制备了熔纺纤维，并分析了纤维的形成机理和内部结构。分子量的降低曲线表明丙酸柯德兰酯的热降解可能是通过随机断裂进行的。等温结晶过程的偏光显微镜显示，Cudlan丙酸酯形成球晶状形态，这在具有刚性主链的多糖中不常见。通过优化熔融纺丝条件，发现可以使用不增塑剂以良好的可纺性纺丝。在等温结晶过程和熔融纺丝过程之间，Cudlan丙酸酯的结晶速率显着不同。卷绕速度，结晶度和纤维的拉伸强度之间呈正相关。从广角X射线衍射结果和其他测量结果提出了一种高度有序的纤维结构模型。