Physical characterization of emulsion intercalated polyaniline–clay nanocomposite

Kim, B.H.; Jung, Jae Hoon; Hong, Seung Hoon; Kim, J.W.; Choi, Hyung Jong; Joo, Jinsoo

doi:10.1016/s1567-1739(00)00021-3

Cited by 77 publications

(19 citation statements)

References 10 publications

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“…This treatment also increases the interplanar distance between the lamellae, facilitating the insertion of the monomer and resulting in defect-free polymers with specific properties. In conductive polymers, this chain-wise organization is even more crucial because it raises intra-chain conductivity 4,5 .…”

Section: Introductionmentioning

confidence: 99%

Polyaniline and mineral clay-based conductive composites

Vilela

Soto-Oviedo

Albers³

et al. 2007

Mat. Res.

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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

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Section: Introductionmentioning

confidence: 99%

Polyaniline and mineral clay-based conductive composites

Vilela

Soto-Oviedo

Albers³

et al. 2007

Mat. Res.

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“…The (001) reflection and d-value for neat Mt were 6.11° (2θ) corresponding to an interlayer distance of 1.44 nm while for Mt-PPy were 2.12 o (2θ) which corresponds to a basal spacing of 4.17 nm, respectively. The shift of the peak to lower angles in the XRD and higher d-value for Mt-PPy can be attributed to the PPy chain intercalation between the Mt layers 30,[44][45] . Moreover, the low-intensity reflection at 6.11° for the Mt-PPy filler suggests that most of the Mt layers were exfoliated [44][45][46] during in situ polymerization.…”

Section: Resultsmentioning

confidence: 95%

Development of Poly (butylene adipate-co-terephthalate) Filled with Montmorillonite-Polypyrrole for Pressure Sensor Applications

et al. 2019

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A novel pressure sensing material composed of poly (butylene adipate-co-terephthalate) (PBAT) and montmorillonite-polypyrrole (Mt-PPy) was prepared using melt mixing and injection molding. The structure and properties of the PBAT/Mt-PPy composites were evaluated and compared with those of the PBAT/PPy blends. The PBAT/Mt-PPy displays a very sharp insulator-conductor transition and its percolation threshold was reached at 6.5 wt% of Mt-PPy, which was lower than that for PBAT/ PPy (11.0 wt% of PPy). The transmission electron microscopy analysis shows that Mt-PPy displays a high aspect ratio and was better distributed and dispersed into PBAT compared to PPy. PBAT/Mt-PPy exhibits a decrease in the electrical resistivity with an applied compressive stress due to the formation of new conducting pathways. The electromechanical response was dependent on Mt-PPy and the maximum sensitivity was observed for the composite containing 10 wt% of Mt-PPy. In this system, the electrical resistivity drops from 9 x 10 6 to 2 x 10 6 Ω cm when a compressive stress of 0.25 MPa was applied. The electrical resistivity changes with applied compressive stress, the reproducibility and the reversibility makes PBAT/Mt-PPy a suitable material for the development of pressure sensors.

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“…These views are consistent with the observed trend. 14,15 The effect of intercalation of polymer by the clay layers was also studied with DTA. The DTA curves of Na-MMT, pure PPy, and PPy/Na-MMT2 nanocomposites were also shown in Figure 6(a-c).…”

Section: Transmission Electron Microscopymentioning

confidence: 99%

Synthesis, characterization, and properties of conducting polypyrrole/Na-montmorillonite nanocomposites

Çeli̇k

Önal

2011

Journal of Thermoplastic Composite Materials

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Polypyrrole/Na-montmorillonite nanocomposites were prepared by oxidative polymerization of pyrrole in aqueous medium using ammonium peroxydisulfate as the oxidant. The synthesized nanocomposites were confirmed by a series of characterization techniques including Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and thermal analysis. X-ray diffraction and transmission electron microscopy images showed that the polypyrrole was intercalated into the clay layers. The thermogravimetric analysis and differential thermal analysis revealed the improved thermal stability of nanocomposites with respect to pure polypyrrole due to modification of the incorporated Na-montmorillonite. Furthermore; adsorptive properties, the moisture retains, and water uptake values of nanocomposites were investigated. Conductivity behaviour of nanocomposites was also studied. The nanocomposites exhibit the room temperature conductivities varied from 1.2 Â 10 À8 S cm À1 to 8.7 Â 10 À8 S cm À1 range, depending on the amount of polypyrrole.

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Physical characterization of emulsion intercalated polyaniline–clay nanocomposite

Cited by 77 publications

References 10 publications

Polyaniline and mineral clay-based conductive composites

Polyaniline and mineral clay-based conductive composites

Development of Poly (butylene adipate-co-terephthalate) Filled with Montmorillonite-Polypyrrole for Pressure Sensor Applications

Synthesis, characterization, and properties of conducting polypyrrole/Na-montmorillonite nanocomposites

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