Electrical Resistivity of Conductive Leather and Influence of Air Temperature and Humidity

Ilda Kazani; Majlinda Hylli; Pellumb Berberi

doi:10.14502/Tekstilec2021.64.298-304

Authors

Ilda Kazani Polytechnic University of Tirana, Department of Textile and Fashion, Mother Teresa Square No.1, Albania; Albanian Young Academy, Shëtitorja Murat Toptani 1000 Tirana, Albania Author https://orcid.org/0000-0002-5727-5553
Majlinda Hylli Polytechnic University of Tirana, Department of Textile and Fashion, Mother Teresa Square No.1, Albania Author
Pellumb Berberi Polytechnic University of Tirana, Department of Engineering Physics, Bulevardi Dëshmorët e Kombit Nr. 4, Tirana, Albania Author

DOI:

https://doi.org/10.14502/Tekstilec2021.64.298-304

Keywords:

air humidity, conductive leather, electrical resistivity, multiple-step method

Abstract

Leather is a material that has been used in different applications for centuries. Today, living in the era of high-technology, we are surrounded by smart products. For this reason, traditional products must be changed or improved in order to support and make us more comfortable while using them. For instance, the touch screen display in electronics products is a smart phone’s or a tablet computer’s primary input device. Still, traditional leather will not function properly in a cold climate or other specific conditions. To make it conductive in such conditions, the double in-situ polymerization of the pyrrole coating method was used. The aim of this study was to observe the electrical properties of conductive leather. At the same time, it stands up to a wide range of different air temperatures, and relative and absolute humidity. These properties are essential because designers and textile engineers should be familiar with them when they decide to use materials in different smart products. Electricity conductivity tests were carried out in year-round temperatures from 7.5 °C to 28.1 °C, with a relative humidity from 18% to 77% and a vapor air concentration from 2.77 g/kg to 12.46 g/kg. The so-called “multiple-step method” was used to test leather’s electrical resistivity for the first time. The method considers a material’s compressional properties and provides an indicator inherent for a material’s electrical properties, regardless of the mass and shape of samples. The results showed a strong dependence between water vapor air concentration and electrical resistivity, described using the formula ρ = 1.3103 H−1.04 Ωm, with a correlation coefficient of 0.87. There was no relation between relative humidity and electrical resistivity, and resistivity and air temperature. Also, the results confirmed again that changes in the shape of the sample used during tests did not influence the measurement’s results, but supported the appropriateness of the measuring method.

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