volume | PIER Journals

Abstract

This paper provides a detailed discussion of anomalous dispersion studies of polyaniline carbon nanotube composites (PANI-CNT) in the X-band frequency range. Dielectric properties are used to demonstrate the material's anomalous behavior. Measurement analysis is performed using a network analyzer; the anomalous medium shows a phase advance, while the other shows a gradual phase decrease. By correlating these characteristics, we can observe their significant impact on the material's microwave properties. We present PANI-CNT powder throughout the study. PANI-CNT exhibits enormous microwave enhancement characteristics compared to standard materials. This paper examines various microwave parameters, including permittivity and shielding efficiency. The novelty of the anomalous effect lies in the significant enhancement of shielding efficiency it produces.

1. Wang, Junwei, Qihui Sun, Jinyao Li, Yang Guo, Wei Tian, Yifan Liu, Baoshan Wu, Longjiang Deng, Nasir Mahmood, and Xian Jian, "Polymer-based nanocomposites: Role of interface for effective microwave absorption," Materials Today Physics, Vol. 31, 100981, 2023.
doi:10.1016/j.mtphys.2023.100981 Google Scholar

2. Kausar, Ayesha and Ishaq Ahmad, "Conducting polymer nanocomposites for electromagnetic interference shielding --- Radical developments ," Journal of Composites Science, Vol. 7, No. 6, 240, 2023.
doi:10.3390/jcs7060240 Google Scholar

3. Omana, Lekshmi, Anoop Chandran, Reenu Elizabeth John, Runcy Wilson, Kalapurackal Cheriyan George, Nellipparambil Viswambharan Unnikrishnan, Steffy Sara Varghese, Gejo George, Sanu Mathew Simon, and Issac Paul, "Recent advances in polymer nanocomposites for electromagnetic interference shielding: A review," ACS Omega, Vol. 7, No. 30, 25921-25947, 2022.
doi:10.1021/acsomega.2c02504 Google Scholar

4. Byrne, Michele T. and Yurii K. Gun'ko, "Recent advances in research on carbon nanotube-polymer composites," Advanced Materials, Vol. 22, No. 15, 1672-1688, 2010.
doi:10.1002/adma.200901545 Google Scholar

5. Dang, Zhi-Min, Jin-Kai Yuan, Jun-Wei Zha, Tao Zhou, Sheng-Tao Li, and Guo-Hua Hu, "Fundamentals, processes and applications of high-permittivity polymer-matrix composites," Progress in Materials Science, Vol. 57, No. 4, 660-723, 2012.
doi:10.1016/j.pmatsci.2011.08.001 Google Scholar

6. Chen, Jie, Zhantao Pei, Bin Chai, Pingkai Jiang, Lin Ma, Lei Zhu, and Xingyi Huang, "Engineering the dielectric constants of polymers: From molecular to mesoscopic scales," Advanced Materials, Vol. 36, No. 52, 2308670, 2024.
doi:10.1002/adma.202308670 Google Scholar

7. Yang, Minzheng, Mengfan Guo, Erxiang Xu, Weibin Ren, Danyang Wang, Sean Li, Shujun Zhang, Ce-Wen Nan, and Yang Shen, "Polymer nanocomposite dielectrics for capacitive energy storage," Nature Nanotechnology, Vol. 19, No. 5, 588-603, 2024.
doi:10.1038/s41565-023-01541-w Google Scholar

8. Chen, Mingyi, Jian Zhu, Kai Zhang, Hongkang Zhou, Yufei Gao, Jie Fan, Rouxi Chen, and Hsing-Lin Wang, "Carbon nanofiber/polyaniline composite aerogel with excellent electromagnetic interference shielding, low thermal conductivity, and extremely low heat release," Nano-Micro Letters, Vol. 17, No. 1, 80, 2025.
doi:10.1007/s40820-024-01583-2 Google Scholar

Dr. Puthanpurakkal Sasikumar Sreekala

Dr. Selvaraj Gokul