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Fabrication of Ag@BaTiO3 hybrid nanofibers via coaxial electrospinning toward polymeric composites with highly enhanced dielectric performances
Composites Communications ( IF 8 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.coco.2020.100411 Mao Wang , Xiao-ren Pan , Xiao-dong Qi , Nan Zhang , Ting Huang , Jing-hui Yang , Yong Wang
Composites Communications ( IF 8 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.coco.2020.100411 Mao Wang , Xiao-ren Pan , Xiao-dong Qi , Nan Zhang , Ting Huang , Jing-hui Yang , Yong Wang
Abstract Here we demonstrated a remarkable improvement in the dielectric performance of poly (vinylidene fluoride) (PVDF)-based composites via incorporating distinguished hybrid nanofibers, namely, Ag nanoparticles-embedded BaTiO3 (Ag@BaTiO3, Ag@BT) nanofibers, which were fabricated by coaxial electrospinning technology followed by calcination. The Ag nanoparticles on BaTiO3 nanofibers were found to play a comprehensive role on the dielectric performances, including the better dispersion of hybrid nanofibers leading to homogeneity of electric field, the formation of charge transfer complex in the hybrid region which enhanced the interfacial polarization, and the Coulomb blockade effect of Ag nanoparticles to further suppress the interfacial charge accumulation. As a result, the PVDF/Ag@BT composites exhibited high dielectric constant of 38.87@1 kHz and low loss of 0.02@1 kHz.
中文翻译:
通过同轴静电纺丝制备具有高度增强介电性能的聚合物复合材料的 Ag@BaTiO3 混合纳米纤维
摘要 在这里,我们证明了聚偏二氟乙烯 (PVDF) 基复合材料的介电性能显着改善,通过加入不同的混合纳米纤维,即银纳米颗粒嵌入的 BaTiO3 (Ag@BaTiO3, Ag@BT) 纳米纤维,这些纳米纤维是由通过同轴静电纺丝技术,然后煅烧。发现 BaTiO3 纳米纤维上的 Ag 纳米粒子对介电性能起着综合作用,包括混合纳米纤维更好的分散导致电场的均匀性,在混合区域形成电荷转移复合物增强了界面极化,以及银纳米粒子的库仑阻塞效应进一步抑制界面电荷积累。因此,PVDF/Ag@BT 复合材料表现出 38 的高介电常数。
更新日期:2020-10-01
中文翻译:
通过同轴静电纺丝制备具有高度增强介电性能的聚合物复合材料的 Ag@BaTiO3 混合纳米纤维
摘要 在这里,我们证明了聚偏二氟乙烯 (PVDF) 基复合材料的介电性能显着改善,通过加入不同的混合纳米纤维,即银纳米颗粒嵌入的 BaTiO3 (Ag@BaTiO3, Ag@BT) 纳米纤维,这些纳米纤维是由通过同轴静电纺丝技术,然后煅烧。发现 BaTiO3 纳米纤维上的 Ag 纳米粒子对介电性能起着综合作用,包括混合纳米纤维更好的分散导致电场的均匀性,在混合区域形成电荷转移复合物增强了界面极化,以及银纳米粒子的库仑阻塞效应进一步抑制界面电荷积累。因此,PVDF/Ag@BT 复合材料表现出 38 的高介电常数。