Depolarized dynamic light scattering study on hierarchical gelation behavior of semicrystalline polymer electrolyte

聚偏氟乙烯/碳酸丙烯酯（PVDF/PC）溶液通过冷却形成物理凝胶。该凝胶主要用作锂离子电池聚合物凝胶电解质的粘结剂。然而，对胶凝行为和改善物理性能的胶凝条件的基本认识尚未得到很好的研究。因此，我们首先进行了光散射和光学显微镜测量，发现PVDF/PC溶液在成核和生长型相分离的驱动下形成了球形畴。其次，我们进行了变形实验，发现随着胶凝温度的升高，力学性能有所改善。

poly(vinylidene fluoride)/propylene carbonate (PVDF/PC) solution forms physical gels by cooling. This type of gel is used such as binder for polymer gel electrolyte of lithium ion battery. However, fundamental understanding on gelation behavior and gelation condition to improve the physical properties has not been well studied. Therefore, firstly, we conducted the light scattering and optical microscope measurements and revealed that PVDF/PC solution formed the spherical domain driven by nucleation and growth type phase separation. Secondly, we carried out the deformation experiments and found that the mechanical properties were improved as the gelation temperature increased.