Volume 56, Issue 12 pp. 947-957
Full Paper

Multipurpose nonwoven viscose/polypropylene fabrics: Effect of fabric characteristics on sorption and dielectric properties

Koviljka A. Asanovic

Corresponding Author

Koviljka A. Asanovic

Department of Textile Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, 11000 Serbia

Correspondence to: K. A. Asanovic (E-mail: [email protected])Search for more papers by this author
Dragana D. Cerovic

Dragana D. Cerovic

The College of Textile Design, Technology and Management, Belgrade, 11000 Serbia

Faculty of Physics, University of Belgrade, Belgrade, 11000 Serbia

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Mirjana M. Kostic

Mirjana M. Kostic

Department of Textile Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, 11000 Serbia

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Slavica B. Maletic

Slavica B. Maletic

Faculty of Physics, University of Belgrade, Belgrade, 11000 Serbia

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Ana D. Kramar

Ana D. Kramar

Department of Textile Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, 11000 Serbia

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First published: 17 April 2018
Citations: 8

ABSTRACT

In this work, sorption and dielectric properties of viscose/polypropylene multipurpose nonwoven fabrics were examined. The analysis of sorption behavior showed that the changes of the water absorptive capacity, the height of capillary rise and water retention value are in a function of viscose fiber content, total porosity, the pore size and used web bonding process. It is observed that dielectric properties at frequencies from 30 Hz to 140 kHz, for samples exposed to different relative air humidity and wet samples, are dependent on viscose fiber content, web bonding process, frequency of electric field and bulk free water content. The effective dielectric permeability of wet samples rapidly decreases with an increase in frequency up to 3 kHz while spectra of the AC specific electrical conductivity showed a plateau above 13 kHz. It is also observed that the dielectric properties of wet samples increase by several orders of magnitude compared to dry samples. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018, 56, 947–957

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