Electrostatic Capture Efficiency Enhancement of Polypropylene Electret Filters with Barium Titanate

Kılıç A., Shim E., Pourdeyhimi B.

AEROSOL SCIENCE AND TECHNOLOGY, vol.49, no.8, pp.666-673, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 49 Issue: 8
  • Publication Date: 2015
  • Doi Number: 10.1080/02786826.2015.1061649
  • Journal Name: AEROSOL SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.666-673
  • Istanbul Technical University Affiliated: Yes

Abstract

This study reports on the effects of BaTiO(3)a high dielectric constant additiveaddition 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.Copyright 2015 American Association for Aerosol Research