High-performance PVdF-HFP/PEG-IL composites: The combined effects of PEG and ionic liquid on proton conductivity and dielectric characteristics
Yazarlar (4)
Doç. Dr. Mesut YILMAZOĞLU Yalova Üniversitesi, Türkiye
Doç. Dr. Hikmet OKKAY Yalova Üniversitesi, Türkiye
Ufuk Abacı Kocaeli Üniversitesi, Türkiye
Ozan Çoban İstanbul Gedik Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Composites Communications (Q1)
Dergi ISSN 2452-2139 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 01-2025
Kabul Tarihi Yayınlanma Tarihi 01-01-2025
Cilt / Sayı / Sayfa 53 / 1 / 102175–0 DOI 10.1016/j.coco.2024.102175
Makale Linki https://doi.org/10.1016/j.coco.2024.102175
Özet
This study explores the influence of varying polyethylene glycol (PEG) concentrations on the properties of PVdF-HFP/PEG-IL polymer composites through comprehensive characterization techniques, including FTIR, SEM, TGA, DMA, XRD and the detailed assessments of proton conductivity, dielectric properties, and relaxation dynamics. In terms of conductivity, the addition of PEG markedly improves proton conductivity. The PVdF-HFP/PEG40-IL composite exhibits the highest conductivity, reaching 1.96 × 10⁻2 S/m at 1 MHz and 300 K, and increasing to 4.27 × 10⁻2 S/m at 420 K. Dielectric properties show that the dielectric constant (ε′) increases with PEG content at low frequencies but decreases at higher frequencies due to reduced ionic polarization. Notably, PVdF-HFP/PEG40-IL achieves a dielectric constant of 3.39 × 106 at 20 Hz, which decreases to 30.34 at 1 MHz. Dielectric loss (ε'') also rises with …
Anahtar Kelimeler
Dielectric properties | Ionic liquid | PEG | Proton conductivity | PVdF-HFP