Improving electret properties of PP filaments with barium titanate

Kılıç, Ali; Shim, Eunkyoung; Yeom, Bong Yeol; Pourdeyhimi, Behnam

doi:10.1016/j.elstat.2012.11.005

Cited by 49 publications

(32 citation statements)

References 11 publications

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“…Even at 10% concentration, MB fabric defects such as agglomeration and bead formation have not been observed. These agree well with our previous works on filaments that showed BaTiO 3 particles were uniformly distributed within PP fibers without compatibilizer use (Kilic et al 2013). Fiber diameter and its distribution were not found to be largely deviated upon BaTiO 3 addition.…”

Section: Web Propertiessupporting

confidence: 82%

“…Samples were charged for 10 min from a distance of 3 cm. For thermally charging, procedure described in our early work (Kilic et al 2013) was followed. Samples were heated to 130 C, then charged for 10 min and cooled down to room temperature instantly.…”

Section: Charging and Surface Potential Analysismentioning

confidence: 99%

“…Effects of grain size and composition on its dielectric properties were largely discussed in the literature (Arlt et al 1985;Hennings 1987). In our previous study (Kilic et al 2013), it was shown that charge density and stability of polypropylene (PP) filaments were improved significantly after incorporation of BaTiO 3 . High dielectric constant particles increase polarizability of electret fiber and enhance space charge formation over the fiber surface.…”

Section: Introductionmentioning

confidence: 99%

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Electrostatic Capture Efficiency Enhancement of Polypropylene Electret Filters with Barium Titanate

Kılıç

Shim

Pourdeyhimi

2015

Aerosol Science and Technology

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This study reports on the effects of BaTiO 3 -a high dielectric constant additive-addition on charging and filtration properties of meltblown polypropylene (PP) electret filters. Since electrostatic capture efficiency of electret filters is mainly dependent on electrical forces, surface potential and aerosol filtration properties were analyzed and compared. Due to quasipermanent nature of electret property, stability of charging and filtration performance was also investigated via following an isothermal charge decay procedure. Addition of BaTiO 3 did not alter fiber morphology significantly. Particularly, the stability of electrostatic filtration performance was found to be promising with the addition of BaTiO 3 . Possible microstructural changes after addition of BaTiO 3 were investigated via wide angle X-ray diffraction. Changes in crystal structure of PP upon addition of BaTiO 3 did not deteriorate electrostatic properties.

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Section: Web Propertiessupporting

confidence: 82%

Section: Charging and Surface Potential Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrostatic Capture Efficiency Enhancement of Polypropylene Electret Filters with Barium Titanate

Kılıç

Shim

Pourdeyhimi

2015

Aerosol Science and Technology

Self Cite

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“…Several dielectric composites have been proposed by using BaTiO 3 particles as filler and a thermoplastic [5][6][7][8][9][10][11] or thermosetting [12,18] polymer as matrix. Composites can be prepared in many different ways, leading to a large variety of morphologies, which strongly influence the macroscopic behavior [19].…”

Section: Introductionmentioning

confidence: 99%

Dielectric permittivity calculation of composites based on electrospun barium titanate fibers

Reboredo

Parra

Castro

2015

Mater. Res. Express

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On the basis of theoretical predictions and experimental results, an empirical method using upper bound equation of the rule of mixtures (ROM) is reported to predict the dielectric permittivity of barium titanate nanofibers. In addition, composites with low volume fraction of BaTiO 3 fiber layers embedded in epoxy resin were prepared and characterized. The relative permittivities of composites with perpendicular and parallel configurations, with respect to the electrodes, were calculated by means of the ROM model. The predicted permittivities matched precisely the obtained experimental values.

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“…Air filters can be divided into mechanical capture and electrostatic adhesion types [5][6][7]. Mechanical capture requires very fine fibers that provide the filter materials with small pores, and moreover, it is also a relatively easy process.…”

Section: Introductionmentioning

confidence: 99%

Surface Observation and Pore Size Analyses of Polypropylene/Low-Melting Point Polyester Filter Materials: Influences of Heat Treatment

Lin

Shih

et al. 2016

MATEC Web Conf.

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Abstract. This study proposes making filter materials with polypropylene (PP) and low-melting point (LPET) fibers. The influences of temperatures and times of heat treatment on the morphology of thermal bonding points and average pore size of the PP/LPET filter materials. The test results indicate that the morphology of thermal bonding points is highly correlated with the average pore size. When the temperature of heat treatment is increased, the fibers are joined first with the thermal bonding points, and then with the large thermal bonding areas, thereby decreasing the average pore size of the PP/LPET filter materials. A heat treatment of 110 o C for 60 seconds can decrease the pore size from 39.6 ȝm to 12.0 ȝm.

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Improving electret properties of PP filaments with barium titanate

Cited by 49 publications

References 11 publications

Electrostatic Capture Efficiency Enhancement of Polypropylene Electret Filters with Barium Titanate

Electrostatic Capture Efficiency Enhancement of Polypropylene Electret Filters with Barium Titanate

Dielectric permittivity calculation of composites based on electrospun barium titanate fibers

Surface Observation and Pore Size Analyses of Polypropylene/Low-Melting Point Polyester Filter Materials: Influences of Heat Treatment

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