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

被引：7

作者：

Acharya, Udit ^{[1
,2
]}

Bober, Patrycja ^{[1
]}

Thottappali, Muhammed Arshad ^{[1
,2
]}

Moravkova, Zuzana ^{[1
]}

Konefal, Magdalena ^{[1
]}

Pfleger, Jiri ^{[1
]}

机构：

[1] Czech Acad Sci, Inst Macromol Chem, Prague 16206, Czech Republic

[2] Charles Univ Prague, Fac Math & Phys, Prague 12116, Czech Republic

来源：

POLYMERS | 2021年 / 13卷 / 18期

关键词：

poly(p-phenylenediamine); montmorillonite; conductivity mechanism; impedance spectroscopy; MONTMORILLONITE CLAY; ELECTRICAL-PROPERTIES; CONDUCTING POLYMER; POLYANILINE; NANOCOMPOSITES; BENZOQUINONE; EMERALDINE; OXIDATION; MODEL; FILMS;

D O I：

10.3390/polym13183132

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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.

引用

页数：17

共 68 条

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