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Electrospun polyacrylonitrile/magnetic Fe3O4–polyhedral oligomeric silsesquioxanes nanocomposite fibers with enhanced filter performance for electrets filter media

Published online by Cambridge University Press:  26 July 2016

Xiaoyan Song ,
Guoqing Cheng ,
Bowen Cheng  and
Jinfeng Xing
Xiaoyan Song
Affiliation:
College of Material Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
Guoqing Cheng
Affiliation:
College of Material Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
Bowen Cheng
Affiliation:
College of Material Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
Jinfeng Xing*
Affiliation:
School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
*
a) Address all correspondence to this author. e-mail: jinfengxing@tju.edu.cn
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Abstract

Magnetic Fe3O4–polyhedral oligomeric silsesquioxanes (POSS) particles with Si-OH were prepared by hydrosilylation reaction between the Fe3O4–SiH and POSS with hydroxyl and vinyl groups. The magnetic Fe3O4–POSS particles were characterized by using transmission electron microscopy, scanning electron microscopy, Fourier transform infrared absorption spectroscopy, thermogravimetry, and vibrating sample magnetometry. The magnetic saturation value of Fe3O4–POSS particles was 18.77 emu/g. Polyacrylonitrile (PAN)/Fe3O4–POSS nanofibers mats were subsequently fabricated by electrospinning technique. The electret properties of PAN/Fe3O4–POSS nanofibers mats and their aerosol filtration property as electrets filter media were characterized. The stability of the surface potential was remarkably improved and the surface potential retention reached 50% for PAN/Fe3O4–POSS mats with 1 wt% Fe3O4–POSS. Compared with pure PAN, the charge retention of PAN/Fe3O4–POSS was increased by 21% and reached 52.40%. Moreover, the collection efficiency increased and the filter resistance decreased when the PAN nanofibers with Fe3O4–POSS were used as electrets filter media. Our study provided an effective method to prepare novel filter materials with high efficiency and low resistance.

Keywords

Fe3O4POSSmagneticelectrospinningelectret
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 17 , 14 September 2016 , pp. 2662 - 2671
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Copyright
Copyright © Materials Research Society 2016 

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