Effect of Modified Nano Silica on the Conductivity and Morphology Characteristics of Oxalic Acid-Doped Polyaniline Composites

Tarmizi, Amirah Amalina Ahmad

doi:10.20964/2021.02.27

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…A novel 1D PANI nanorod was synthesized by a facile and green approach [5]. Ammonium persulphate mediated chemical synthesis of PANI was reported by Tarmizi et al [6]. Electrochemical synthesis of PANI was studied by Nuepane et al [7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and non-isothermal degradation kinetics of rose Bengal end capped poly(aniline)/Cr2O3 nanocomposite

Kenet Nancy Mary,

Jancirani,

Baskaran

et al. 2023

Chem. Pap.

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Solution polymerization of aniline was carried out in the presence of peroxydisulphate as a radical initiator under N2 atmosphere at 0-5 o C for 2 hours both in the presence and absence of Cr2O3(bulk) material under vigorous stirring condition. During the polymerization reaction the rosebengal (RB) dye was added as an end capping agent. The above synthesized polymers were characterized by FT-IR, UV-visible, fluorescence emission, XPS, XRD, DSC, TGA, SEM, HR-TEM, viscosity and conductivity measurements. The added Cr2O3(bulk) controlled the structure of Poly(aniline) (PANI) and the same can be confirmed by FT-IR spectroscopy. The Tg of Cr2O3 medicated poly(aniline) showed somewhat higher value than the pristine PANI. The XPS showed the presence of Cr3d2p3/2 and Cr3d2p1/2 peaks and this confirmed the nano-sized crystalline Cr2O3. Further, its thermal degradation was studied by non-isothermal degradation kinetics and their thermodynamic parameters were determined. The experimental data was compared with the available literature data. Keywords Synthesis . Characterization . HR-TEM . XPS . Degradation kinetics .

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and non-isothermal degradation kinetics of rose Bengal end capped poly(aniline)/Cr2O3 nanocomposite

Kenet Nancy Mary,

Jancirani,

Baskaran

et al. 2023

Chem. Pap.

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Synthesis, characterization and non-isothermal degradation kinetics of rosebengal end capped Poly(aniline)/Cr2O3 nanocomposite

Anbarasan

Mary²,

Jancirani

et al. 2023

Preprint

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Solution polymerization of aniline was carried out in the presence of peroxydisulphate as a radical initiator under N2 atmosphere at 0-5oC for 2 hours both in the presence and absence of Cr2O3(bulk) material under vigorous stirring condition. During the polymerization reaction the rosebengal (RB) dye was added as an end capping agent. The above synthesized polymers were characterized by FT-IR, UV-visible, fluorescence emission, XPS, XRD, DSC, TGA, SEM, HR-TEM, viscosity and conductivity measurements. The added Cr2O3(bulk) controlled the structure of Poly(aniline) (PANI) and the same can be confirmed by FT-IR spectroscopy. The Tg of Cr2O3 medicated poly(aniline) showed somewhat higher value than the pristine PANI. The XPS showed the presence of Cr3d2p3/2 and Cr3d2p1/2 peaks and this confirmed the nano-sized crystalline Cr2O3. Further, its thermal degradation was studied by non-isothermal degradation kinetics and their thermodynamic parameters were determined. The experimental data was compared with the available literature data.

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Cement-Based Thermoelectric Device for Protection of Carbon Steel in Alkaline Chloride Solution

Liao

Zhang

et al. 2022

Materials

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The thermoelectric cement-based materials can convert heat into electricity; this makes them promising candidates for impressed current cathodic protection of carbon steel. However, attempts to use the thermoelectric cement-based materials for energy conversion usually results in low conversion efficiency, because of the low electrical conductivity and Seebeck coefficient. Herein, we deposited polyaniline on the surface of MnO2 and fabricated a cement-based thermoelectric device with added PANI/MnO2 composite for the protection of carbon steel in alkaline chloride solution. The nanorod structure (70~80 nm in diameter) and evenly dispersed conductive PANI provide the PANI/MnO2 composite with good electrical conductivity (1.9 ± 0.03 S/cm) and Seebeck coefficient (−7.71 × 103 ± 50 μV/K) and, thereby, increase the Seebeck coefficient of cement-based materials to −2.02 × 103 ± 40 μV/K and the electrical conductivity of cement-based materials to 0.015 ± 0.0003 S/cm. Based on this, the corrosion of the carbon steel was delayed after cathodic protection, which was demonstrated by the electrochemical experiment results, such as the increased resistance of the carbon steel surface from 5.16 × 102 Ω·cm2 to 5.14 × 104 Ω·cm2, increased charge transfer resistance from 11.4 kΩ·cm2 to 1.98 × 106 kΩ·cm2, and the decreased corrosion current density from 1.67 μA/cm2 to 0.32 μA/cm2, underlining the role of anti-corrosion of the PANI/MnO2 composite in the cathodic protection system.

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Effect of Modified Nano Silica on the Conductivity and Morphology Characteristics of Oxalic Acid-Doped Polyaniline Composites

Cited by 3 publications

References 15 publications

Synthesis, characterization and non-isothermal degradation kinetics of rose Bengal end capped poly(aniline)/Cr2O3 nanocomposite

Synthesis, characterization and non-isothermal degradation kinetics of rose Bengal end capped poly(aniline)/Cr2O3 nanocomposite

Synthesis, characterization and non-isothermal degradation kinetics of rosebengal end capped Poly(aniline)/Cr2O3 nanocomposite

Cement-Based Thermoelectric Device for Protection of Carbon Steel in Alkaline Chloride Solution

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