Comparative study of the electrical and structural properties of woven fabrics

Cerović, Dragana D.; Asanovic, Koviljka A.; Maletić, Slavica B.; Dojčilović, Jablan

doi:10.1016/j.compositesb.2013.01.002

Cited by 29 publications

(45 citation statements)

References 28 publications

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“…This study is a continuation of our investigation of fibrous structures made from natural and synthetic fiberse . The objective of this study was dielectric characterization of fibrous polymers based on polypropylene with different structure parameters.…”

Section: Introductionmentioning

confidence: 98%

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

Cerović

Petronijević

Dojčilović

2014

Polym. Adv. Technol.

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In this work, dielectric spectroscopy was conducted on five commercial woven polypropylene‐based fabrics. Measurements of dielectric loss tangent, the effective relative dielectric permeability and ac electrical conductivity were performed over a wide range of temperature and frequency. The results in temperature range from 250 K to 355 K showed that the samples with lower value of volume fraction whose yarn is made from a short fiber have a lower value of the above mentioned dielectric parameters than the samples with bigger value of volume fraction and filament yarn along the weft and the warp lines. Based on the results gained from the measurements in the vacuum and ambient conditions, it can be concluded that the samples with a lower value of volume fraction, whose yarn is made from a short fiber, showed stability of dielectric properties in the measurement interval. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 98%

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

Cerović

Petronijević

Dojčilović

2014

Polym. Adv. Technol.

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“…At a lower frequency, we could observe a slight decrease in ε ' m value as the frequency increased for all three samples. 20 Small increase can be connected with the presence of polar water molecules in an empty space between the fibers at relative air humidity of 35% because the polymeric material absorbs insignificant moisture. It was noticed that the change of ε ' m at lower frequency region was higher for the sample with CF.…”

Section: Methodsmentioning

confidence: 99%

“…A slight increase in ε ' m with increasing the frequency was attributed to dispersion. [18][19][20]32 The temperature dependence of tan δ for the sample PA 6.6 as a function of frequency is shown in Figure 5. This is in accordance with the results, which were observed for the PES samples, 35 as well as for fibrous PET.…”

Section: Methodsmentioning

confidence: 99%

“…1 The condensation polymers, PET and PA 6.6, can have only one possible configuration but can take up many different conformations. Many research groups have used different methods for examining molecular motion in PET-based samples, such as dynamic mechanical relaxation (DMA), 13 nuclear magnetic resonance (NMR), 14 dielectric relaxation spectroscopy (DRS) technique, [15][16][17][18][19][20][21] and final thermally stimulated discharge current (FTSDC). Semicrystalline polymers have complicated morphology consisting of crystalline lamellae separated by a thin amorphous region.…”

Section: Introductionmentioning

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%

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Electrophysical properties of woven polymer mesh fabrics

Cerović

Asanovic

Maletić

et al. 2019

J of Applied Polymer Sci

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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.

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Water uptake, chemical characterization, and tensile behavior of modified banana–plantain fiber and their polyester composites

Rodríguez

Orrego

2015

Polymer Composites

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Banana–plantain fibers (BPFs) were treated with acetic anhydride (AA), epichlorohydrin (EP), and an acetic anhydride–epichlorohydrin blend (AA_EP). Natural fiber–polyester composites (PCs) were fabricated using untreated and treated BPF by the hand lay‐up technique. Modified BPF Raman and Infrared spectroscopy (ATR‐FTIR) analysis revealed losses of lignin and hemicelluloses and new chemical bonds that confirmed the replacement of part of the raw fiber hydroxyl groups, which gave rise to a degree of hydrophobicity in the treated fibers. This change altered their water sorption isotherms, swelling behavior in water, impedance spectroscopy, and XRD analysis. Assays of water absorption and tensile resistance for untreated BPF (U) and modified BPF polyester composites demonstrated a remarkable reduction in water intake, whereas tensile strength was maintained (P < 0.05) for the modified BPF polyester composites. POLYM. COMPOS., 37:2960–2973, 2016. © 2015 Society of Plastics Engineers

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Comparative study of the electrical and structural properties of woven fabrics

Cited by 29 publications

References 28 publications

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

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

Electrophysical properties of woven polymer mesh fabrics

Water uptake, chemical characterization, and tensile behavior of modified banana–plantain fiber and their polyester composites

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