Influence of temperature and fiber structure on the dielectric properties of polypropylene fibrous structures

Cerović, Dragana D.; Petronijević, Ivan; Dojčilović, Jablan

doi:10.1002/pat.3245

Cited by 10 publications

(15 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Izci and Bowler measured ε ′ in the frequency range of 10 −2 to 10 6 Hz and reported that ε ′ decreased only slightly, by about 0.5%. Also, in the our previous paper, we did not observe significant changes of ε ' with the frequency increase for fibrous iPP samples …”

Section: Resultsmentioning

confidence: 50%

“…Also, in the our previous paper, we did not observe significant changes of ε' with the frequency increase for fibrous iPP samples. 21 The plot of a relative dielectric constant versus frequency of the pure aPS sheet and 9 composites based on the aPS is shown in Figure 6. It can be observed that the results for the composites based on aPS, for the frequency dependence of ε′, were similar as for the With this kind of treatment, most of the alkali metal particles were implemented into the polymer matrices of iPP and aPS, which is shown by ICP-OES.…”

Section: Dielectric Spectroscopymentioning

confidence: 99%

See 1 more Smart Citation

Dielectric spectroscopy of nanocomposites based on iPP and aPS treated in the water solutions of alkali metal salts

Petronijević

Cerović²,

Dudić

et al. 2018

Polymers for Advanced Techs

Self Cite

View full text Add to dashboard Cite

In this paper, a new simple and environmentally friendly treatment technique for obtaining polymer nanocomposites with appropriate dielectric properties has been presented. Sheets of isotactic polypropylene and atactic polystyrene were immersed in 3 saturated water solutions of alkali metal salts (LiCl, NaCl, and KCl) at 2 fixed temperatures (23°C and 90°C), and 3 DC electrical potentials (+4 kV, −4 kV, and ground potential) were applied. A quantification of alkali metals in the polymer sheets was conducted by inductively coupled plasma optic emission spectrometry. The obtained concentration values were from 7.38·10−9 mol/cm3 to 1.25·10−7 mol/cm3. The qualitative analysis of potassium distribution in the polymer matrix was conducted by time‐of‐flight secondary ion mass spectrometry cross‐sectional record. The relative dielectric constant (ε′) of samples was investigated in the frequency range from 20 Hz to 9 MHz at the constant temperature of 22°C. Stable values of ε′ in fully measured frequency range were observed for both pure and treated samples. Next, the results of the dielectric spectroscopy measurements were compared and established the kind of treatment that provided the highest value of ε′. The relationship between the concentrations of alkali metals and the values of relative dielectric constant was determined for the samples obtained by a treatment at 90°C and +4 kV.

show abstract

Section: Resultsmentioning

confidence: 50%

Section: Dielectric Spectroscopymentioning

confidence: 99%

Dielectric spectroscopy of nanocomposites based on iPP and aPS treated in the water solutions of alkali metal salts

Petronijević

Cerović²,

Dudić

et al. 2018

Polymers for Advanced Techs

Self Cite

View full text Add to dashboard Cite

show abstract

“…A detailed description of the measurement set up is given in Refs. 18,19,31. The samples were sandwiched between two electrodes with a diameter of 13 mm.…”

Section: Characterization Techniquesmentioning

confidence: 99%

“…[18][19][20][21][28][29][30][31][32][33][34][35][36][37][38] The comparison between dielectric permittivity of the samples made from PET, PA 6.6 monofilaments, and a sample PA 6.6 monofilament with CF was performed in the frequency range from 20 Hz to 3 MHz at room conditions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrophysical properties of woven polymer mesh fabrics

Cerović

Asanovic

Maletić

et al. 2019

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

The investigation was performed on three woven mesh fabrics made of polyethylene terephthalate (PET), polyamide (PA) 6.6 monofilaments, and PA 6.6 with carbon filament (CF). The dielectric properties were examined as functions of frequency at room conditions and as functions of frequency and temperature under the vacuum. It was observed at lower frequency higher changes of dielectric permittivity for the sample with CFs at room conditions. For PET and PA 6.6, dielectric permittivity in the vacuum was steady and little lower; furthermore, dielectric spectra showed the existence of γ-, β-, and α-relaxations. The dc volume electrical resistivity was investigated in the function of relative humidity at room temperature for PA 6.6 and PA 6.6 with CF. For the sample with the CF, a decrease in the dc electrical resistivity of nine orders of magnitude in the direction with CF was registered as compared to the direction without a conductive filament.

show abstract

Multipurpose nonwoven viscose/polypropylene fabrics: Effect of fabric characteristics on sorption and dielectric properties

Asanovic

Cerović²,

Kostić

et al. 2018

J Polym Sci B Polym Phys

Self Cite

View full text Add to dashboard Cite

In this work, sorption and dielectric properties of viscose/polypropylene multipurpose nonwoven fabrics were examined. The analysis of sorption behavior showed that the changes of the water absorptive capacity, the height of capillary rise and water retention value are in a function of viscose fiber content, total porosity, the pore size and used web bonding process. It is observed that dielectric properties at frequencies from 30 Hz to 140 kHz, for samples exposed to different relative air humidity and wet samples, are dependent on viscose fiber content, web bonding process, frequency of electric field and bulk free water content. The effective dielectric permeability of wet samples rapidly decreases with an increase in frequency up to 3 kHz while spectra of the AC specific electrical conductivity showed a plateau above 13 kHz. It is also observed that the dielectric properties of wet samples increase by several orders of magnitude compared to dry samples.

show abstract

Influence of temperature and fiber structure on the dielectric properties of polypropylene fibrous structures

Cited by 10 publications

References 20 publications

Dielectric spectroscopy of nanocomposites based on iPP and aPS treated in the water solutions of alkali metal salts

Dielectric spectroscopy of nanocomposites based on iPP and aPS treated in the water solutions of alkali metal salts

Electrophysical properties of woven polymer mesh fabrics

Multipurpose nonwoven viscose/polypropylene fabrics: Effect of fabric characteristics on sorption and dielectric properties

Contact Info

Product

Resources

About