1. bookVolume 20 (2020): Issue 1 (June 2020)
Journal Details
License
Format
Journal
eISSN
1339-4533
First Published
16 Apr 2016
Publication timeframe
2 times per year
Languages
English
access type Open Access

Temperature-Dependent Electrical Characteristics of Disc-Shaped Compacts Fabricated using Calcined Eggshell Nano Powder and Dry Cassava Starch

Published Online: 31 Jul 2021
Volume & Issue: Volume 20 (2020) - Issue 1 (June 2020)
Page range: 12 - 20
Journal Details
License
Format
Journal
eISSN
1339-4533
First Published
16 Apr 2016
Publication timeframe
2 times per year
Languages
English
Abstract

Disc-shaped compacts were fabricated from two mix proportions of calcined eggshell nanopowder and dry cassava starch and then used as test samples. The electrical resistance (R), thermal sensitivity index (β) and electronic activation energy (Ea) of the samples measured over a temperature range from 35 to 75oC were found to decrease non-linearly in values with increasing temperature. It was also observed that the results obtained (R = 3.691E6 Ω – 6.210E7 Ω, β = 3812K – 5316K and Ea = 0.33 eV – 0.46 eV) fulfill market requirements by comparing very well with the established values for NTC thermistors. Hence, from manufacturing viewpoint, recycling of chicken eggshell wastes and cassava effluents can avail electronic industry with promising and alternative materials for fabrication of temperature sensing / monitoring / control devices suitable for engineering applications. This will also help to reduce environmental pollution.

Keywords

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