Modeling and preparation of nanofire and composite nanostructures

D. Kimmer*, I. Vincent, L. Lovecká, SPUR a.s. in Zlin; W. Sambaer, M. Zatloukal, Tomas Bata University in Zlin; J. Ondráček, Institute of Chemical Process Fundamentals of the CAS, v. v. i. in Prague; T. Kazda, Brno University of Technology; A. Giurg, University of Chemistry and Technology in Prague; Czech Republic

Procedures permitting to prepare homogeneous nanofiber and composite structures of the desired morphology by employing a suitable combination of variables during the electrospinning process and consequent exploitations in various industrial spheres are presented.

Nanostructures applied in air filtration exhibit excellent filtration efficiency first of all in separation of ultrafine particles from the polluted air. Compared are electrospun (ES) and meltblown (MB) structures and their combinations by means of new digital image analysis (DIA) technique and experimental measurement of filtration efficiency in accordance with requests of EN 1822. Model prediction and experimentally measured values for elimination of ammonium sulphate ultrafine particles are in excellent compliance.

It has been proved higher filtration efficiency and/or lower values of pressure drops of filters based on polymeric nanofibers in comparison with glass fiber materials at consistent conditions of experimental measurements.

The importance of ecological and healthy aspects of antibacterial treatment of filtration nanostructures has been evaluated too. Antibacterial agents which are not fixed on polymeric matrix of filtration materials properly, e.g. by covalent bond, can be unfixed into the stream of filtrated air or into the filtrate in case of liquid filtration.

Electrospinning process has been also used for the preparation of nanostructured materials based on particles of various fillers and polymeric nanofibers aimed to maximize distribution of filler in space and size of material active surface. Application of composite nanostructures prepared by spinning process in electrostatic field for energy storage and ion exchange processes in capacitive deionization are discussed too....

Session: F5 - Filter Media - Advanced Manufacturing Methods III
Day: 13 October 2016
Time: 13:00 - 14:15 h

Learn more at FILTECH 2018 - Register Now!