Characterization and AC conductivity of polyaniline–montmorillonite nanocomposites synthesized by mechanical/chemical reaction

Bekri-Abbes, Imene; Srasra, Ezzeddine

doi:10.1016/j.reactfunctpolym.2009.09.008

Cited by 47 publications

(20 citation statements)

References 40 publications

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“…The absorption peak at 310-316 nm can be ascribed to п-п n transition of the benzenoid rings, while the peaks at 366-370 and 700-720 nm can be attributed to polaron-π* transition and π-polaron transition, respectively [5]. However, we have noticed that these peaks have undergone a shift compared to that reported for polyaniline clay nanocomposite [5].…”

Section: Characterization Of the Nanocompositescontrasting

confidence: 55%

“…However, we have noticed that these peaks have undergone a shift compared to that reported for polyaniline clay nanocomposite [5]. This shift could be attributed to the interaction of polyaniline with iron phase.…”

Section: Characterization Of the Nanocompositesmentioning

confidence: 49%

“…This method presents the disadvantages of being pollutant and it requires a step of separation to collect the nanocomposite. Recently, we have studied the possibility of the preparation of polyaniline clay nanocomposite using persulfate of ammonium as oxidant by a green synthesis method based on solid solid reaction [5]. However, the use of persulfate of ammonium present several disadvantages: (i) this oxidant is stoichiometrically consumed in the reaction and the reaction requires a large amount of chemicals for the mass production [6], (ii) the reaction generates large amount of acidic by-products resulting in difficult separation of polyaniline from the reaction mixtures [6] and (iii) the removal of these by-products from neat PANI represents about one half of the PANI cost [7].…”

Section: Introductionmentioning

confidence: 99%

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Green synthesis of polyaniline/clay/iron ternary nanocomposite by the one step solid state intercalation method

Bekri-Abbes

Srasra

2015

Materials Science in Semiconductor Processing

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Section: Characterization Of the Nanocompositescontrasting

confidence: 55%

Section: Characterization Of the Nanocompositesmentioning

confidence: 49%

Section: Introductionmentioning

confidence: 99%

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Green synthesis of polyaniline/clay/iron ternary nanocomposite by the one step solid state intercalation method

Bekri-Abbes

Srasra

2015

Materials Science in Semiconductor Processing

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“…3. The FTIR spectra of the PANI-Fe 2 O 3 composites showed bands at 831 and 881 cm -1 , which are characteristic peaks of PANI [55]; the spectral band at 1590 cm -1 is ascribed as quinone ring stretching deformation [56]. The spectral bands observed at 1172 cm -1 are due to interplane bending of C-H bond and the band observed at 1363 cm -1 is due to stretching of C ⎯ C bond [57].…”

Section: Introductionmentioning

confidence: 99%

Structural, morphological, and electrical properties of polyaniline-Fe2O3 nanocomposites

et al. 2015

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Nanocomposites of polyaniline with Fe 2 O 3 particles have been synthesized by chemical oxidative polymerization method by increasing the weight percentage of Fe 2 O 3 . The powder X ray diffraction tech nique was employed to study the structure and crystallinity of the synthesized nanocomposites. The strong interaction of polyaniline with Fe 2 O 3 particles was confirmed using FTIR technique. It was shown that poly aniline is dispersed into Fe 2 O 3 particles successfully by in situ polymerization and therefore the degree of crystallinity increased due to crystalline structure of Fe 2 O 3 particles. According to SEM and TEM data, most of Fe 2 O 3 particles were coated with polyaniline and those nanocomposites have formed a network during the polymerization process as well. Electrical conductivity of polyaniline containing 5 wt % of Fe 2 O 3 was higher among all other composites and even than PANI.

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“…Electrical conductivity measurements were carried out using a Hewlett Packard model 4192A impedance analyzer in the frequency range of 40 Hz to15 MHz. The yield (%) of polymerization was calculated using the following expression [32][33][34]:…”

Section: Introductionmentioning

confidence: 99%

Physico-chemical and dielectric characterization of polypyrrole clay composite

Zidi¹,

Bekri-Abbes²,

Sdiri³

et al. 2015

Polym. Compos.

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In this study, we report on the chemical and dielectric properties of polypyrrole (PPy) clay composite. The in situ polymerization has been carried out in an aqueous solution using ammonium persulfate (APS) as oxidant. Molar ratio of Pyrrole (Py) to interlayer clay cation was fixed to 4 and that of APS to Py (R) was varied in the range of 0.25–4.00. It was shown that both the chemical and dielectric behaviors were affected by the variation of (R). XRD results showed an intercalated structure of PPy for a value of R corresponding to 0.25. Above this value, the basal distance (d001) was found to be around 1.3 nm, implying that PPy is essentially located at the surface of Montmorillonite (MMT). From FTIR spectroscopy, it was found that for R = 4, PPy was degraded, resulting in a decrease of the degree of polymerization and conductivity. For all samples the AC conductivity was found to be constant until 2 × 105 Hz but increased steeply above this value. The highest conductivity was found to be around 3.95 10−3 S.cm−1 for R = 1. The composite exhibited very large values of ε′ and ε″ at a low frequency, these values decreased with the increase of frequency. Curves of imaginary electric modulus (M″) exhibited a frequency peak due to the process of relaxation time of conductivity (τ = 6.9410−8 s) for R = 1. POLYM. COMPOS., 38:2043–2051, 2017. © 2015 Society of Plastics Engineers

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Characterization and AC conductivity of polyaniline–montmorillonite nanocomposites synthesized by mechanical/chemical reaction

Cited by 47 publications

References 40 publications

Green synthesis of polyaniline/clay/iron ternary nanocomposite by the one step solid state intercalation method

Green synthesis of polyaniline/clay/iron ternary nanocomposite by the one step solid state intercalation method

Structural, morphological, and electrical properties of polyaniline-Fe2O3 nanocomposites

Physico-chemical and dielectric characterization of polypyrrole clay composite

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