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Revealing structural and electrical details of PVA/LiClO4 thermoplastic membranes
Materials Science and Engineering: B ( IF 3.6 ) Pub Date : 2024-02-03 , DOI: 10.1016/j.mseb.2024.117219
Y.M.C. Pinto , J.P. da Silva , F.X. Nobre , J. Anglada-Rivera , D. Comedi , R.S. Silva , M.M.S. Paula , S. Michielon de Souza , L. Aguilera , Y. Leyet

This study aims to explore the structural and electrical properties of thermoplastic membranes made of polyvinyl alcohol (PVA) with Lithium Perchlorate (), which were prepared using the solvent evaporation method. The PVA crystalinity were calculated by using the Rietveld method on X-ray diffraction(XDR), thus, it was possible to notice modifications in the unit cell parameters that corresponded to P2/m space group and monoclinic symmetry. Through the application of infrared and Raman spectroscopies, we demonstrate the influence of Li on the vibrational modes of the polymer's polar group and carbon bonds. Additionally, our complex impedance analysis indicates a decrease in resistance as the salt content increases, reaching a minimum value of 1.4 * 10 Ω at a 10 % salt concentration. The applied structural and electrical characterization techniques indicated that PVA- 5 % exhibits the highest crystallinity and electrical conduction among all the membranes studied. Consequently, these findings highlight the promising potential of the synthesized material for further investigation and its possible applications in technological devices.

中文翻译:

揭示 PVA/LiClO4 热塑性薄膜的结构和电气细节

本研究旨在探讨采用溶剂蒸发法制备的聚乙烯醇(PVA)与高氯酸锂()制成的热塑性薄膜的结构和电性能。PVA结晶度是通过X射线衍射(XDR)上的Rietveld方法计算的,因此,可以注意到与P2/m空间群和单斜对称性相对应的晶胞参数的变化。通过红外和拉曼光谱的应用,我们证明了Li对聚合物极性基团和碳键振动模式的影响。此外,我们的复数阻抗分析表明,随着盐含量的增加,电阻会降低,在 10% 盐浓度下达到最小值 1.4 * 10 Ω。应用的结构和电学表征技术表明,PVA-5% 在所有研究的膜中表现出最高的结晶度和电导率。因此,这些发现凸显了合成材料进一步研究的巨大潜力及其在技术设备中的可能应用。
更新日期:2024-02-03
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