Characterization of Opto-Electrical, Electrochemical and Mechanical Behaviors of Flexible PVA/(PANI+La2CuO4)/LiClO4-PC Polymer Blend Electrolyte Films

• Published in: Macromolecular research 2022, 30(9), , pp.650-658
• Main Authors: Al-Gunaid, Murad Q. A., Shashikala, B. S., Gayitri, H. M., Alkanad, Khaled, Al-Zaqri, Nabil, Boshaala, Ahmed, Al-Ostoot, Fares H.
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Current voltage characteristics; Electrical properties; Electrochemical analysis; Electrolytes; Elongation; Energy gap; Fillers; Fourier transforms; Infrared spectroscopy; Mechanical tests; Morphology; Nanochemistry; Nanocomposites; Nanotechnology; Physical Chemistry; Polyanilines; Polymer blends; Polymer films; Polymer Sciences; Polymers; Polyvinyl alcohol; Propylene; Soft and Granular Matter; Spectrum analysis; 고분자공학
• ISSN: 1598-5032; 2092-7673
• DOI: 10.1007/s13233-022-0070-4

A new series of flexible nanocomposite-solid polymer electrolyte (SPEs) in the form of poly(vinyl alcohol) (PVA) impregnated by core-shells polyaniline (PANI)-La 2 CuO 4 (20:2 wt%) of nanofillers, 10 wt% LiClO 4 as electrolyte and various amount 2, 4, 6, and 8 wt% of propylene carbonate, PC as plasticizer via solvent intercalation method. The obtained plasticized PVA-SPEs films were evaluated for their microstructural and morphological behaviors via X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR) spectroscopy, respectively. The surface morphology of plasticized PVA-SPEs films illustrated the finer dispersion of inclusion fillers in the PVA matrix with increasing the dosage of PC content. FTIR spectra showed a reduction in the characteristic peaks of PVA in composite films and that denoted the interaction between PVA-OH and fillers. Optical findings exhibited higher absorbance of PVA-SPE in the visible region compared with pure PVA; in addition, the band-gap energy was reduced to 2.68 eV for PVA-SPE containing 8 wt% PC. The current-voltage characteristics showed a slight deviation for all PVA-SPE films denoting to non-ohmic behavior. Besides, the maximum ac-conductivity was found at 40.3 × 10 −5 S/cm for PVA-SPE film containing 8 wt% PC with enhanced their specific capacitance by two folds compared with pure PVA. Mechanical testing showed that elongation at break has been increased attributed to increasing flexibility of polymeric segments with the increase in PC content.