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Magnetic Field Assisted Electrospinning of Nanofibers Using Solutions with PVDF and Fe3O4Nanoparticles

Published online by Cambridge University Press:  17 February 2014

Juan A. Gonzalez ,
Rogerio Furlan ,
Raymond Lopez ,
Luis M. Martinez  and
Esteban Fachini
Juan A. Gonzalez
Affiliation:
Physics and Electronics Department, University of Puerto Rico at Humacao, Call Box 860 Humacao, PR 00792
Rogerio Furlan
Affiliation:
Physics and Electronics Department, University of Puerto Rico at Humacao, Call Box 860 Humacao, PR 00792
Raymond Lopez
Affiliation:
Physics and Electronics Department, University of Puerto Rico at Humacao, Call Box 860 Humacao, PR 00792
Luis M. Martinez
Affiliation:
Physics and Electronics Department, University of Puerto Rico at Humacao, Call Box 860 Humacao, PR 00792
Esteban Fachini
Affiliation:
General Studies Faculty, University of Puerto Rico Rio Piedras Campus, Edificio Domingo Marrero Navarro, San Juan, PR, 00931
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Abstract

This study aims at investigating the formation of nanofibers containing poly (vinylidene fluoride) (PVDF) and Fe3O4 nanoparticles using magnetic field assisted electrospinning. For this purpose, two Helmholtz coils were mounted on the electrospinning apparatus in order to create a uniform magnetic field. Different separations, angles and magnetic fields are being analyzed. Polymeric solutions containing PVDF, DMF and acetone with a concentration of 18 wt% were adopted (DMF to Acetone ratio of 3 to 1). Iron Oxide Nanopowder (Fe3O4, particle diameter of 20 nm to 30 nm) to PVDF ratios are 1:5, 1:10 and 1:15. The application of the electromagnetic field during fiber deposition results in better orientation of the polymer flow towards the grounded electrode and leads to smoother fibers with diameters in the range of hundreds of nanometers. Blisters, probably related to Fe3O4 agglomerates, were distributed on the surface of all samples of this study. A magnetic field response of the nanofibers with higher magnetic fields was clear observed. By adding more Fe3O4 to the polymeric solution the ferromagnetic response on thin films and nanofibers was improved. The analysis of circular capacitors revealed a full dielectric response.

Keywords

polymerpiezoelectricmagnetic properties
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1659: Symposium SS/XX – Micro- and Nanoscale Systems – Novel Materials, Structures and Devices , 2014 , pp. 155 - 162
Copyright
Copyright © Materials Research Society 2014 

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