Electrostatic Capture Efficiency Enhancement of Polypropylene Electret Filters with Barium Titanate

Ali Kilic*, Eunkyoung Shim, Behnam Pourdeyhimi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)

Abstract

This study reports on the effects of BaTiO3-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 quasi-permanent nature of electret property, stability of charging and filtration performance was also investigated via following an isothermal charge decay procedure. Addition of BaTiO3 did not alter fiber morphology significantly. Particularly, the stability of electrostatic filtration performance was found to be promising with the addition of BaTiO3. Possible microstructural changes after addition of BaTiO3 were investigated via wide angle X-ray diffraction. Changes in crystal structure of PP upon addition of BaTiO3 did not deteriorate electrostatic properties.

Original languageEnglish
Pages (from-to)666-673
Number of pages8
JournalAerosol Science and Technology
Volume49
Issue number8
DOIs
Publication statusPublished - 3 Aug 2015

Bibliographical note

Publisher Copyright:
© 2015 American Association for Aerosol Research.

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