Conductivity relaxation behavior of interpenetrating polymer network composites of polypyrrole and poly(styrene-co-butyl acrylate)

Bhattacharyya, Souvik; Saha, Shyamal Kumar; Chakravorty, D.

doi:10.1002/(sici)1099-0488(20000501)38:9<1193::aid-polb11>3.0.co;2-r

Cited by 16 publications

(8 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6a. It is consistent with the results reported for amorphous materials [37,38]. The variation of n values of pure TREG with temperature is a strong evidence for thermally activated polarization mechanism.…”

Section: Conductivity and Permitivity Measurementssupporting

confidence: 92%

Triethylene Glycol Stabilized CoFe2O4 Nanoparticles

Baykal

Deligöz

Sözeri

et al. 2012

J Supercond Nov Magn

View full text Add to dashboard Cite

We report on the synthesis and detailed composition, thermal, micro-structural, ac-dc conductivity performance and dielectric permittivity characterization of triethylene glycol (TREG) stabilized CoFe 2 O 4 nanoparticles synthesized by polyol method. XRD analysis confirmed the inorganic phase as CoFe 2 O 4 with high phase purity. Microstructure analysis with TEM revealed well separated, spherical nanoparticles in the order of 6 nm, which is also confirmed by X-ray line profile fitting. FT-IR analysis confirms that TREG is successfully coated on the surface of nanoparticles. Overall conductivity of nanocomposite is approximately two magnitudes lower than that of TREG with increase in temperature. The ac conductivity showed a temperature dependent behavior at low frequencies and temperature independent behavior at high frequencies which is an indication of ionic conductivity. The dc conductivity of the nanocomposites and pure TREG are found to obey the Ar-A. Baykal ( ) · Z. Durmus rhenius plot with dc activation energies of 0.258 eV and 0.132 eV, respectively. Analysis of dielectric permittivity functions suggests that ionic and polymer segmental motions are strongly coupled in the nanocomposite. TREG stabilized CoFe 2 O 4 nanoparticles has lower ε and ε than that of pure TREG due to the doping of cobalt. As the temperature increases, the frequency at which (ε ) reaches a maximum shifted towards higher frequencies. On the other hand, the activation energy of TREG for relaxation process was found to be 0.952 eV which indicates the predominance of electronic conduction due to the chemical nature of TREG. Contrarily, no maximum peak of tan δ was observed for the nanocomposite due to the being out of temperature and frequency range applied in the study.

show abstract

Section: Conductivity and Permitivity Measurementssupporting

confidence: 92%

Triethylene Glycol Stabilized CoFe2O4 Nanoparticles

Baykal

Deligöz

Sözeri

et al. 2012

J Supercond Nov Magn

View full text Add to dashboard Cite

show abstract

“…For potential applications in solid-state devices, conductivity relaxation behaviour in conducting polymer composite material studies has become an interesting area of active research [31][32][33]. The permittivity or dielectric constant ( ), which is a measure of the energy stored in a sample during a cyclic electric excitation and loss factor which are used to characterize molecular relaxations, was measured and usually the energy stored in the form of a non-uniform dipole distribution or ionic charge layers.…”

Section: Dielectric Properties Of the Polymer Blendmentioning

confidence: 99%

Effect of weight percentage of B₄C reinforcement on physical and mechanical properties of polyamide 6/polystyrene composites

Aljuraide

Elbary

2020

Journal of Taibah University for Science

View full text Add to dashboard Cite

Blends of polyamide 6/polystyrene (PA6/PS) (50/50 wt./wt. %) were loaded with different concentrations of boron carbide (B 4 C), (0, 5, 10, 15, 20 and 30 wt./wt. %) separately for EMI shielding. The effects of different weight fractions of fillers on thermal, electrical, as well as, mechanical behavior of the prepared composites were investigated. Thermal stability and hardness (shore D) of composites are studied. Addition of B 4 C enhances thermal stability of the prepared composites which attributed to the increase in physical and chemical cross-linking points, also to the interactions between the filler and polymer blend. Confirmation of thermal stability was done by determining the activation energy (E a) for the thermal decomposition of all composites. Characterization of the prepared composites was done using SEM. With B 4 C-loaded PA6/PS blend composites, samples of 2 mm thick, SE values of 5-36 dB were achieved, satisfying the requirement for common commercial applications.

show abstract

“…Here, u is the angular frequency, s is the frequency exponent and A is a temperature independent constant [21][22][23] constant dependence on frequency for both polyimide films at various temperatures is shown in Figs. 6 and 7.…”

Section: Frequency and Temperature Dependence Of Ac Conductivitymentioning

confidence: 99%

A novel cross-linked polyimide film: synthesis and dielectric properties

Deligöz

Özgümüş

Yalçınyuva

et al. 2005

Polymer

View full text Add to dashboard Cite

Conductivity relaxation behavior of interpenetrating polymer network composites of polypyrrole and poly(styrene-co-butyl acrylate)

Cited by 16 publications

References 16 publications

Triethylene Glycol Stabilized CoFe2O4 Nanoparticles

Triethylene Glycol Stabilized CoFe2O4 Nanoparticles

Effect of weight percentage of B₄C reinforcement on physical and mechanical properties of polyamide 6/polystyrene composites

A novel cross-linked polyimide film: synthesis and dielectric properties

Contact Info

Product

Resources

About

Conductivity relaxation behavior of interpenetrating polymer network composites of polypyrrole and poly(styrene-co-butyl acrylate)

Cited by 16 publications

References 16 publications

Triethylene Glycol Stabilized CoFe2O4 Nanoparticles

Triethylene Glycol Stabilized CoFe2O4 Nanoparticles

Effect of weight percentage of B4C reinforcement on physical and mechanical properties of polyamide 6/polystyrene composites

A novel cross-linked polyimide film: synthesis and dielectric properties

Contact Info

Product

Resources

About

Effect of weight percentage of B₄C reinforcement on physical and mechanical properties of polyamide 6/polystyrene composites