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Synthesis and impedance spectroscopy of poly(p-phenylenediamine)/montmorillonite composites
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SYSNO ASEP 0545658 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Synthesis and impedance spectroscopy of poly(p-phenylenediamine)/montmorillonite composites Author(s) Acharya, Udit (UMCH-V) RID, ORCID
Bober, Patrycja (UMCH-V) RID, ORCID, SAI
Thottappali, Muhammed Arshad (UMCH-V) RID
Morávková, Zuzana (UMCH-V) RID, ORCID
Konefal, Magdalena (UMCH-V) ORCID, RID
Pfleger, Jiří (UMCH-V) RIDArticle number 3132 Source Title Polymers. - : MDPI
Roč. 13, č. 18 (2021)Number of pages 17 s. Language eng - English Country CH - Switzerland Keywords poly(p-phenylenediamine) ; montmorillonite ; conductivity mechanism Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects GA21-01401S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UMCH-V - RVO:61389013 UT WOS 000699922400001 EID SCOPUS 85115639776 DOI 10.3390/polym13183132 Annotation 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. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2022 Electronic address https://www.mdpi.com/2073-4360/13/18/3132
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