Poly(Butylene Succinate) Hybrid Multi-Walled Carbon Nanotube/Iron Oxide Nanocomposites: Electromagnetic Shielding and Thermal Properties

• DOI: 10.3390/polym15030515
• Publication Date: 2023-01-19T09:19:40Z
• Authors: Miks Bleija; Oskars Platnieks; Jan Macutkevič; Jūras Banys; Olesja Starkova; Liga Grase; Sergejs Gaidukovs
• Keywords: anti-static; ferrite; ferrite ; electrostatic dissipative ; anti-static ; electrical conductivity ; thermal conductivity ; surface resistivity; electrical conductivity; thermal conductivity; 02 engineering and technology; electrostatic dissipative; surface resistivity; 0210 nano-technology; 7. Clean energy; Article

To address the ever-increasing electromagnetic interference (EMI) pollution, a hybrid filler approach for novel composites was chosen, with focus on EMI absorbance. Carbon nanofiller loading limited to 0.6 vol.% in order create sustainable and affordable solution. Multiwall carbon nanotubes (MWCNT) iron oxide (Fe3O4) nanoparticles were mixed nine ratios from 0.1 8.0 12.0 vol.%, respectively. With addition of surfactant, excellent particle dispersion achieved (examined SEM micrographs) bio-based biodegradable poly(butylene succinate) (PBS) matrix. Hybrid design synergy assessed shielding using dielectric spectroscopy microwave region transmittance terahertz range. The effectiveness (20–52 dB) dominated by very high absorption at 30 GHz, while 1.0 THz range, reduced up 6 orders magnitude. Frequency-independent AC electrical conductivity (from 10−2 107 Hz) reached upon adding MWCNT 10 Fe3O4, value around 3.1 × S/m. Electrical thermal mainly affected content filler. scaled highest 0.309 W/(mK) 25 °C 12 Fe3O4. surface resistivity showed an incremental decrease increase almost unaffected loading. Thermal independent temperature measured range 45 °C. nanocomposites serve as alternatives commodity plastic-based materials are promising field applications, especially shielding.