Polyaniline and mineral clay-based conductive composites

Abstract

Composite materials have attracted the attention of numerous researchers due to the distinct properties shown by this class of materials and the mineral clay used in their synthesis. In this study, conductive composites were obtained by mixing polyaniline (PAni) with clay (kaolinite and montmorillonite). The aniline was polymerized in a medium with clay and the powder was characterized by X ray diffraction, electrical conductivity and morphology. The results suggest PAni chain linearization in a kaolinite medium. The addition of montmorillonite resulted in PAni chain linearization and intercalation of mineral clay, although the montmorillonite was not pretreated. The PAni-clay composites showed an electrical conductivity of 0.01 S.cm-1, which appeared not to be influenced by the amount of clay used

New Poly(aniline-co-o-phenylenediamine)/Kaolinite Microcomposites for Water Decontamination

“…Our study suggests that the addition of clay can elevate the electrical resistivity and consequently, lowers the electrical conductivity, since kaolinite clay as an insulating material is added to the medium. These results are in accordance with other case that stated by Faez et al [55].…”

Synthesis and characterization of hexagonal ferrite Sr1.8Sm0.2Co2Ni1.50Fe10.50O22/PST thin films for high frequency application

“…The broad peak in the XRD pattern of the PST sample is the characteristic of amorphous structure over the 2Ɵ range 7-28º. Similar XRD patterns were already observed by many researchers [18][19][20]. All the reflections of Sr …”

Intercalated polyaniline–kaolinite nanocomposite prepared viain situmechanochemical synthesis

“…Figure shows the typical X‐ray powder patterns of the kaolinite, intercalated PANI–kaolinite nanocomposite, and PANI in the range 2–40°. As shown in Figure (a), we observed that there were four diffraction peaks located at 2θ positions of 12.5, 25.1, 35.2, and 38.3°; these were attributed to the crystalline structure of kaolinite . The first peak at 12.5° related to the 001 plane corresponded to a basal spacing ( d 001 ) of 7.24 Å.…”

“…The first peak at 12.5° related to the 001 plane corresponded to a basal spacing ( d 001 ) of 7.24 Å. There were also two peaks correlated with quartz observed at 20.1 and 26.8°; this suggested the existence of quartz in the raw kaolinite . The peaks at 17.9, 20.5, and 25.3° were caused by PANI [Figure (c)] .…”