Synthesis and Impedance Spectroscopy of Poly(p-phenylenediamine)/Montmorillonite Composites

Autor: Udit Acharya, Patrycja Bober, Muhammed Arshad Thottappali, Zuzana Morávková, Magdalena Konefał, Jiří Pfleger
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Polymers, Vol 13, Iss 18, p 3132 (2021)
Druh dokumentu: article
ISSN: 2073-4360
DOI: 10.3390/polym13183132
Popis: Poly(p-phenylenediamine)/montmorillonite (PPDA/MMT) composites were prepared by the oxidative polymerization of monomers intercalated within the MMT gallery, using ammonium peroxydisulfate as an oxidant. The intercalation process was evidenced by X-ray powder diffraction. The FT-IR and Raman spectroscopies revealed that, depending on the initial ratio between monomers and MMT in the polymerization mixture, the polymer or mainly oligomers are created during polymerization. The DC conductivity of composites was found to be higher than the conductivity of pristine polymer, reaching the highest value of 10−6 S cm−1 for the optimal MMT amount used during polymerization. Impedance spectroscopy was performed over wide frequency and temperature ranges to study the charge transport mechanism. The data analyzed in the framework of conductivity formalism suggest different conduction mechanisms for high and low temperature regions.
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