Synthesis and impedance spectroscopy of poly(p-phenylenediamine)/montmorillonite composites

0545658 - ÚMCH 2022 RIV CH eng J - Journal Article
Acharya, Udit - Bober, Patrycja - Thottappali, Muhammed Arshad - Morávková, Zuzana - Konefal, Magdalena - Pfleger, Jiří
Synthesis and impedance spectroscopy of poly(p-phenylenediamine)/montmorillonite composites.
Polymers. Roč. 13, č. 18 (2021), č. článku 3132. E-ISSN 2073-4360
R&D Projects: GA ČR(CZ) GA21-01401S
Institutional support: RVO:61389013
Keywords : poly(p-phenylenediamine) * montmorillonite * conductivity mechanism
OECD category: Polymer science
Impact factor: 4.967, year: 2021
Method of publishing: Open access
https://www.mdpi.com/2073-4360/13/18/3132

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.
Permanent Link: http://hdl.handle.net/11104/0322844