Thermal and electrical properties of nanocomposite poly o-anisidine/metal oxides

Mansour, Nahla A.; Mohamed, Manal G.; Abed, M. Yahia; Mazrouaa, Azza M.

doi:10.1177/0954008312446766

Cited by 11 publications

(13 citation statements)

References 23 publications

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“…POA/SnO 2 nanocomposites were also synthesized through an in situ chemical polymerization of o-anisidine (OA) in the presence of SnO 2 nanoparticles of 25 2 40 nm in diameter [15]. POA was prepared through chemical oxidation polymerization, and the nanocomposite of this polymer was prepared with different metals oxide nanoparticles [16]. POA/TiO 2 composite microspheres were synthesized in the presence of salicylic acid (SA) as a dopant with ammonium persulfate as an oxidant.…”

Section: Introductionmentioning

confidence: 99%

A novel conducting nanocomposite obtained by p‐anisidine and aniline with titanium(IV) oxide nanoparticles: Synthesis, Characterization, and Electrochemical properties

et al. 2015

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Nanocomposites were successfully synthesized by the oxidative polymerization of p‐anisidine and/or aniline monomers (at initial “p‐anisidine:aniline” mole ratios of “100 : 0,” 50 : 50,” and “0 : 100”) with titanium(IV) oxide nanoparticles, in the presence of hydrochloric acid as a dopant with ammonium persulfate as an oxidant. The morphological, structural, conductivity, and electrochemical properties of the synthesized nanocomposites were studied using Transmission Electron Microscopy, X‐ray diffraction, Fourier transform infrared spectroscopy, and UV–vis spectroscopies. The presence of polymer on TiO2 nanoparticles in samples nanocomposites was confirmed by the Transmission Electron Microscopy coupled with Energy Dispersive X‐ray Spectroscopy. The thermal stability of samples nanocomposites were evaluated using the Thermogravimetric Analysis. Electrical conductivity of nanocomposites obtained is in the range of 0.08 − 0.91 S cm−1. The electrochemical behavior of the polymers extracted from the nanocomposites has been analyzed by cyclic voltammetry. Good electrochemical response has been observed for polymer films; the observed redox processes indicate that the polymerization on TiO2 nanoparticles produces electroactive polymers. These composite microspheres can potentially be used in commercial applications as fillers for antistatic and anticorrosion coatings. POLYM. COMPOS., 38:E254–E260, 2017. © 2015 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

A novel conducting nanocomposite obtained by p‐anisidine and aniline with titanium(IV) oxide nanoparticles: Synthesis, Characterization, and Electrochemical properties

et al. 2015

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“…The polymer-inorganic material nanocomposites are synthesized to enhance the scanty properties of conducting polymers as it integrates the traits of both conducting polymers and inorganic fillers. 7 –10 The enhancement in properties of hybrid materials can be ascribed to the development of some synergistic interactions between the nanofiller and the charge transfer through the macromolecule. However, the enhanced properties of hybrid material depend on the weight fractions of filler used.…”

Section: Introductionmentioning

confidence: 99%

Structural characterization, electrical properties and gas sensing applications of polypyrrole/Cu-Al₂O₃ hybrid nanocomposites

Sankar

Parvathi

Ramesan

2020

High Performance Polymers

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The present work focused on the synthesis of polypyrrole (PPy) wrapped nano copper-alumina (Cu-Al2O3) composite by an in situ polymerization of pyrrole in the presence of Cu-Al2O3 nanoparticles. The polymerized samples were systematically characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) analysis, scanning electron microscope (SEM), high-resolution transmission electron microscope (HR-TEM), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The properties such as AC and DC conductivity, dielectric constant, and ammonia gas sensing performance of PPy/Cu-Al2O3 composites were investigated in detail as a function of Cu-Al2O3 content. The FTIR spectra showed the existence of sharp and resolved infrared bands of nanoparticles in the PPy chain. The presence of the crystalline peaks of Cu-Al2O3 in the PPy matrix was confirmed from the XRD analysis. SEM images revealed the homogenous growth of Cu-Al2O3 in the polymer with the formation of spherically shaped particles. The HR-TEM observation showed that Cu-Al2O3 particles were dispersed at a nanometer level in the nanocomposites with a width of 30–60 nm. The glass transition temperature of composites obtained from DSC was found to be increased with increase in the content of nanoparticles. TGA analysis proved that the nano Cu-Al2O3 in the content in the composites acted as a mass transport barrier that retards the degradation of the product. The AC conductivity and dielectric constant of the nanocomposite showed that the maximum electrical properties were observed for the composite with 5 weight percentage loading of Cu-Al2O3. DC conductivity showed that the PPy/Cu-Al2O3 composites have higher electrical conductivity than PPy. The ammonia gas sensing property of the composites was significantly enhanced by the addition of Cu-Al2O3 nanoparticles. Therefore, the improved properties of synthesized PPy/Cu-Al2O3 nanocomposite can be useful for developing functional composite material for the fabrication of sensors, electronic devices, and high energy storage capacitors.

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“…İnorganik malzeme olarak tabakalı silikatlar ve organik malzemeler olan iletken polimerlerin kimyasal veya elektrokimyasal yöntemlerle bir araya getirilmesi ile hazırlanan iletken nanokompozitler, bileşenlerinin tek başına gösterdikleri özelliklerden daha gelişmiş yeni özellikler gösterdikleri için, son yıllarda ilgi çeken yeni bir malzeme sınıfını oluşturmuştur [1,2] [14]. Bu nedenle POA'nin da polianilin gibi amaca yönelik olarak manyetik nanopartikül [15], metal oksit [16], film [17], lif [18] ve inorganik-organik toz gibi farklı yalıtkan/yarıiletken materyallerle [19,20] [24]. Bugüne kadar talk kullanılarak iletken polimerler ile kompozitlerinin hazırlanmasına yönelik bir çalışmaya rastlanmamıştır.…”

Section: Gi̇ri̇ş (Introduction)unclassified

İletken poli(o-anisidin)/ talk kompozitinin sentezi ve karakterizasyonu

Anaklı

Çetinkaya

Karakışla

et al. 2018

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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The conductive composite material obtained by using a conductive polymer and an inorganic layered clay. • The increase of microhardness in the composite material with the help of synergetic effects of its components. • The rise of thermal stability in POA polymer after the incorporation of talc to the composite material. Purpose: The purpose of the research is to prepare a conductive POA/talc composite using conducting poly(oanisidine) and layered talc clay in the presence of ammonium persulfate as oxidant. After preparation of the composite a new material with improved properties such as elastic-plastic property and thermal properties was obtained. Theory and Methods: Conductive POA/Talc composite was prepared via the chemical polymerization of o-anisidine in the presence of talc particles by using ammonium persulfate as oxidant. 1.0 M aqueous HCl solution (17 mL) was first added onto talc (1.0±0.001 g) and o-anisidine in a beaker and then the suspension was mixed for about 15 min. The polymerization was initiated by the addition of aqueous acidic oxidant solution (3 mL) into the mixture. After 2 hours of the polymerization, the mixture was first separated by centrifugation at 1000 rpm and then washed by distilled water, methyl alcohol and dilute HCl solution, in sequence, to remove unreacted monomer and oxidant from the composite, as well as to recover dopant anions. As the final step, the composite was dried at 50 o C for 24 h under vacuum. Results: The polymerization parameters such as the effect of APS/o-anisidine mole ratio and the effect of o-anisidine concentration on the conductivity and POA amount of the POA/talc composite were investigated. The structural, morphological and thermal properties of the composite were analyzed by using XRD (X-ray Diffraction), FTIR (Fourier Transform InfraRed spectroscopy) and TGA (Thermogravimetric Analysis) techniques; micro-hardness measurement, BET (Brunauer-Emmett-Teller) surface area analysis and SEM (Scanning Electron Microscopy) analyses. TGA showed that the thermal stability of the conducting polymer POA increased by the formation of the composite structure with talc clay. Conclusion: A POA/talc composite with a POA content of 42.7% and a conductivity of 3.2x10-5 S/cm was obtained through the polymerization conditions of 0.2 M o-anisidine concentration, 1,5 APS/o-anisidin mole ratio and 0.1 M HCl concentration over 2 hours at 20 o C. Micro-indentation analysis indicated that the micro-hardness property of the talc particles increased after the addition of the conducting polymer to the composite. The coating of the conducting POA polymer on the talc surfaces was confirmed by the stable places of the peaks in the XRD patterns and the micrographics in SEM microstructures.

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Thermal and electrical properties of nanocomposite poly o-anisidine/metal oxides

Cited by 11 publications

References 23 publications

A novel conducting nanocomposite obtained by p‐anisidine and aniline with titanium(IV) oxide nanoparticles: Synthesis, Characterization, and Electrochemical properties

A novel conducting nanocomposite obtained by p‐anisidine and aniline with titanium(IV) oxide nanoparticles: Synthesis, Characterization, and Electrochemical properties

Structural characterization, electrical properties and gas sensing applications of polypyrrole/Cu-Al₂O₃ hybrid nanocomposites

İletken poli(o-anisidin)/ talk kompozitinin sentezi ve karakterizasyonu

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Thermal and electrical properties of nanocomposite poly o-anisidine/metal oxides

Cited by 11 publications

References 23 publications

A novel conducting nanocomposite obtained by p‐anisidine and aniline with titanium(IV) oxide nanoparticles: Synthesis, Characterization, and Electrochemical properties

A novel conducting nanocomposite obtained by p‐anisidine and aniline with titanium(IV) oxide nanoparticles: Synthesis, Characterization, and Electrochemical properties

Structural characterization, electrical properties and gas sensing applications of polypyrrole/Cu-Al2O3 hybrid nanocomposites

İletken poli(o-anisidin)/ talk kompozitinin sentezi ve karakterizasyonu

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Structural characterization, electrical properties and gas sensing applications of polypyrrole/Cu-Al₂O₃ hybrid nanocomposites