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Radiation induced effect on structural and dielectric properties of polyaniline incorporation into polyvinylidene fluoride/barium titanate ternary composites
Synthetic Metals ( IF 4.0 ) Pub Date : 2022-08-01 , DOI: 10.1016/j.synthmet.2022.117154
M.M. Atta , R.M. Ahmed , S.Abd El Al , A.S. El-Bayoumi

The solution casting approach was used to successfully manufacture polyvinylidene fluoride-barium titanate (PVDF-BT) films doped with varied ratios of polyaniline (PANI) (0, 0.5, 1, 2% wt.). The structural and dielectric properties of different prepared films and a selected film irradiated with 0, 10, 20, and 30 kGy from an electron beam accelerator (EB) are investigated. Incorporating PANI into PVDF-BT resulted in a higher β-phase, as evidenced by XRD and FTIR. Besides the amorphization of BT particles inside the irradiated film, EB induces the transition of α-phases into β-phases. Adding PANI, the dielectric constant (ε`) and loss tangent (tanδ) of the PVDF-BT composites increased. In contrast, EB irradiation causes a reduction of ε`and tanδ values of the irradiated sample. Because of the reduced polarization level, the ac conductivity (σac) rose with increasing PANI content in PVDF-BT composite, but it decreased with increasing EB doses. Furthermore, adding PANI to PVDF-BT composite and irradiating with EB generated structural alterations in the material. Incorporating PANI into PVDF-BT and EB irradiation decreased mobile ions and lattice strain inside samples.



中文翻译:

辐射对聚苯胺掺入聚偏二氟乙烯/钛酸钡三元复合材料结构和介电性能的影响

溶液流延方法用于成功制造掺杂不同比例的聚苯胺 (PANI) (0, 0.5, 1, 2% wt.) 的聚偏氟乙烯-钛酸钡 (PVDF-BT) 薄膜。研究了用电子束加速器 (EB) 照射 0、10、20 和 30 kGy 的不同制备薄膜和选定薄膜的结构和介电性能。如 XRD 和 FTIR 所证明的,将 PANI 加入 PVDF-BT 会产生更高的 β 相。除了辐照薄膜内 BT 粒子的非晶化外,EB 还诱导 α 相转变为 β 相。添加 PANI,PVDF-BT 复合材料的介电常数 (ε`) 和损耗角正切 (tanδ) 增加。相反,EB 辐照导致辐照样品的 ε` 和 tanδ 值降低。由于极化水平降低,交流电导率(σac ) 随着 PVDF-BT 复合材料中 PANI 含量的增加而上升,但随着 EB 剂量的增加而下降。此外,将 PANI 添加到 PVDF-BT 复合材料中并用 EB 照射会在材料中产生结构变化。将 PANI 加入 PVDF-BT 和 EB 辐照可降低样品内的移动离子和晶格应变。

更新日期:2022-08-01
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