Intercalation effect of 1-methyl-3-(4-vinylbenzyl) imidazol-3-ium chloride ionic liquid on Na-exchanged montmorillonite: Synthesis, characterizations, and dielectric spectroscopic analysis. (October 2022)

• Record Type: Journal Article
• Authors: Belhocine, M.; Ammari, A.; Haouzi, A.; Dergal, F.; Debdab, M.; Belarbi, H.
• Is Part Of: Journal of physics and chemistry of solids. Volume 169(2022)
• Publication Date: 2022-10
• Subjects: Montmorillonite -- Ionic liquid -- Thermal analysis -- Dielectric losses -- Ac-conductivity; Solids -- Periodicals; Solides -- Périodiques; Solids; Periodicals; 530.41
• DOI: 10.1016/j.jpcs.2022.110846
• Languages: English
• ISSNs: 0022-3697

Abstract

Abstract: This study investigates the properties of the 1-methyl-3-(4-vinylbenzyl) imidazol-3-ium chloride [VBmim +, Cl − ]/montmorillonite nanocomposite. The compound [VBmim +, Cl − ] was synthesized and intercalated by dispersion. Thermal analysis showed that the nanocomposite had good thermal stability and ∼10% of [VBmim +, Cl − ] was quantified. The temperature dependence of electrical conductivity deviated slightly from linear behavior, and increased with the frequency and temperature. The activation energy was found to be characteristic of hopping electronic conductivity. The dielectric loss tangent exhibited dominant relaxation peaks at 328 K and 450 K. The components of the complex dielectric function showed that the ionic liquid/clay interfacial zone provided high polarization. The loss tangent revealed that higher dispersion had occurred in the nanocomposite over the low-frequency range. The ac-conductivity exhibited two regions of dependence regardless of the temperature, and varied proportional to f ( 1 − n ) above 500 Hz, where 0.1 < n < 0.46. Highlights: [VBmim +, Cl − ] ionic liquid was prepared and intercalated into Na + - montmorillonite. Structural analysis confirmed the intercalation of VBmim + organic cations. Thermal analysis showed that the M-VBmim exhibited a good thermal stability. Ac-conductivity displays two regions of dependence whatever is the temperature. Dielectric analysis revealed the occurrence of high losses in the nanocomposite.