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Data-driven methodology to realize strong and broadband microwave absorption properties of polymer-fly ash cenosphere composite

Bora, PJ and Mahanta, B and Kishore, Kishore and Ramamurthy, PC (2022) Data-driven methodology to realize strong and broadband microwave absorption properties of polymer-fly ash cenosphere composite. In: Journal of Applied Polymer Science, 139 (16).

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Official URL: https://doi.org/10.1002/app.51981


A very efficient microwave absorption characteristic of conducting polymer (polyaniline or PANI) incorporated fly ash cenosphere (FAC), which is a waste of thermal power plant, is revealed in this work with materials data-driven approach. The different loading (wt%) of PANI-FAC hybrids to a polymer such as polyvinyl butyral (PVB) results in different reflection loss (RL). However, RL performances do not improve by simply increasing the PANI-FAC hybrid loading (wt%) to PVB. Herein, PANI-FAC loading to PVB is optimized through the electromagnetic data-driven methodology. A remarkable RL ≤ − 40 dB with entire X-band (8.2–12.4 GHz) absorption bandwidth (RL ≤ −10 dB, RL value −10 dB corresponds to 90% absorption) is predicted for 8.5 wt% PANI-FAC hybrid loaded PVB-PANI-FAC composite. The predicted RL matched with experimental data (minimum RL value −44.5 dB with X-band absorption bandwidth), confirming the proposed proof of concept of data-driven methodology to obtain broadband and robust microwave absorption characteristics of polymer-FAC composites.

Item Type: Journal Article
Publication: Journal of Applied Polymer Science
Publisher: John Wiley and Sons Inc
Additional Information: The copyright for this article belongs to the John Wiley and Sons Inc.
Keywords: Bandwidth; Conducting polymers; Fly ash; Thermoelectric power plants, Data driven; Dielectrics property; Fly ash cenospheres; Material data; Microwave absorption characteristics; Microwave absorption properties; Poly(vinyl butyral); Reflection loss; Thermal-power plants; X bands, Dielectric properties
Department/Centre: Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research
Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 31 Dec 2021 07:16
Last Modified: 24 Jun 2022 05:10
URI: https://eprints.iisc.ac.in/id/eprint/70878

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