Polyvinylidene fluoride (PVDF) exhibits favorable piezoelectric properties for energy storage applications. However, their application has been hindered owing to their low dielectric constant. To overcome this, studies have reported the incorporation of BaTiO₃ fillers to induce a phase transition in PVDF to a piezoelectric phase, i.e., the β phase. In this study, the effect of self-assembled BaTiO₃ filler aggregates on the α–β phase transition of BaTiO₃/PVDF composites was investigated. Through scanning electron microscopy and Fourier transform infrared spectroscopy, we observed that the α–β phase transition of the composites increased as the average secondary particle area of the BaTiO₃ aggregates increased. This suggested that dielectric polarization exhibited by the presence of filler/polymer/filler heterointerfaces in the aggregates was significant in the α–β phase transition of the composites.

聚偏二氟乙烯 (PVDF) 在储能应用中表现出良好的压电特性。然而，由于其低介电常数，它们的应用受到了阻碍。为了克服这一点，研究报道了掺入BaTiO ₃填料以诱导PVDF 相变到压电相，即β相。本研究研究了自组装 BaTiO ₃填料聚集体对 BaTiO ₃ /PVDF 复合材料α-β 相变的影响。通过扫描电子显微镜和傅里叶变换红外光谱，我们观察到复合材料的α-β相变随着BaTiO ₃的平均二次粒子面积的增加而增加。总量增加。这表明聚集体中存在填料/聚合物/填料异质界面所表现出的介电极化在复合材料的α-β相变中是显着的。