A Simple Pathway Predicts the Electrical Performance of Polymer Carbon Black Nanocomposites: Conductivity Reaches 3.4 Siemens per Meter at a Tunneling Length of 1 and Resistivity of 50 Ohm-Meters, Published in Scientific Reports on November 13
Scientific Reports published a theoretical study on November 13, 2026 offering a simple pathway for predicting the electrical performance of polymer carbon black nanoparticle systems, under DOI 10.1038/s41598-026-78696-8. The team modified and advanced the Hui-Shia model to estimate the conduction of nanocomposites with carbon black nanofiller. The advanced model treats the concentration of carbon black and interphase networks, together with the tunneling resistance, as the key terms influencing electron transfer, and analyzes the effects of carbon black size, tunneling characteristics, interphase depth, network concentration and percolation onset. Both tunneling length and polymer resistivity inversely govern conduction. A tunneling length of 1 and a polymer resistivity of 50 ohm-meters boost conduction to 3.4 siemens per meter, while a tunneling length above 7 nanometers produces a poor conductivity of 0.08 siemens per meter. A smaller carbon black radius and a higher interphase depth also help. A radius of 15 nanometers and an interphase depth of 25 nanometers grow the conductivity to 2 siemens per meter, while a radius above 27 nanometers or an interphase depth below 11 nanometers produces an insulated sample. A network amount of 0.15 and a contact diameter of 60 nanometers give 1 siemens per meter, against only 0.002 siemens per meter when the network amount falls below 0.01 or the contact diameter below 20 nanometers. The authors are based at Gebze Technical University in Türkiye, the American University of the Middle East in Kuwait, the University of Georgia and Iran's National Cancer Institute, with correspondence to Yasser Zare. The measured conductivity of several examples was provided to evaluate the model's predictions, and no funding was received for the work.
(Source: Scientific)
Source: Scientific
Published by GSM · USA (original Chinese edition)
Photo: 图：实验室内的医学成像设备。National Institute of Allergy and Infectious Diseases，公共领域，经 Wikimedia Commons。 / Photo: National Institute of Allergy and Infectious Diseases, public domain, via Wikimedia Commons.
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