Joule-heat derived amorphous/graphitic polymer nanotubes with enhanced electromagnetic wave absorption and high thermal conductivity
Cao Y. Zeng X. Su J. Yu W. Zhang H. Abdou S.N. Ibrahim M.M. Fallatah A.M. Zhang J. Amangeldi N. Algadi H. Ainur Y. Toktarbay Z. Huang J. Min Y. Guo Z.
July 2025Elsevier Ltd
Carbon
2025#242
The rapid advancement of artificial intelligence demands multifunctional materials integrating electromagnetic wave absorption (EWA) and thermal management capabilities for next-generation electronics. Herein, a facile and scalable Joule-heating carbonization strategy is proposed to regulate the amorphous-to-graphitic phase ratio in polymer nanotubes, achieving a precise modulation of EWA performance. The nitrogen species transformation during carbonization induced enhanced polarization relaxation, defect generation, and dipole polarization, synergistically facilitating charge transfer. Polypyrrole-based polymer nanotubes treated at 1000 °C (PNT-1000) exhibited a maximum effective absorption bandwidth of 3.46 GHz and a minimum reflection loss of −45.1 dB. Moreover, PNT-1000@polydimethylsiloxane (PDMS) demonstrated a thermal conductivity of 2.26 W/(mK), while PNT-2000@PDMS achieved a significantly higher thermal conductivity of 4.20 W/(mK). This work systematically elucidated the interaction between amorphous and graphitic phases in controlling both EWA and thermal conductivity, which is helpful for applying carbon-based materials in these advanced fields.
Amorphous , Electromagnetic wave absorbers , Graphitized , Joule-heat-driven , Nanotubes
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Department of Polymeric Materials and Engineering, School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China
Department of Chemistry, Khurmah University College, Taif University, Taif, Saudi Arabia
Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia
School of Materials Science and Hydrogen Energy, Foshan University, Foshan, 528000, China
Department of Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle Upon Tyne, NE1 8ST, United Kingdom
Department of Pre-University Training, Faculty of Pre-University Education, Al-Farabi Kazakh National University, Al-Farabi Av. 71, Almaty, 700420, Kazakhstan
Department of Chemistry, Faculty of Natural Science, Kazakh National Womans Teacher Training University, Aitekebi Street 99, Almaty, 700420, Kazakhstan
Department of Сhemistry, Faculty of Natural Sciences and Geography, Abai Kazakh National Pedagogical University, 13 Dostyk Ave., Almaty, 050010, Kazakhstan
Department of Electrical Engineering, Faculty of Engineering, Najran University, Najran, 11001, Saudi Arabia
College of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan, 030024, China
Department of Polymeric Materials and Engineering
Department of Chemistry
Department of Chemistry
School of Materials Science and Hydrogen Energy
Department of Mechanical and Construction Engineering
Department of Pre-University Training
Department of Chemistry
Department of Сhemistry
Department of Electrical Engineering
College of Chemical Engineering and Technology
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