Promising Electromagnetic Interference Shielding Materials: Hybrid Fillers Reinforced Bio‐Based Composites
Makaleler > Tam Makale · 2025
Yazarlar: Bedriye ÜÇPINAR, Ayse Aytac
Journal of Applied Polymer Science, SCI İndekslerine Giren Dergi, Uluslararası, Wos, 2025, cilt 142, ss e56618-e56632
DOI: 10.1002/app.56618
Özet
ABSTRACT Electromagnetic pollution, also known as electromagnetic interference (EMI) issues, is a growing concern as electronic and telecommunication technologies advance. The resulting urgent demand for EMI shielding materials underscores the need for the development of high‐performance, environmentally friendly shielding materials. Here, we assess the impact of multiscale carbon‐based hybrid filler on the EMI shielding performance of polyamide 11/poly(lactic acid) composites. The effects of the amounts (0.5 to 5 wt%) of graphene nanoplatelets (GNPs) and multiwalled carbon nanotube (MWCNT) nanofillers in carbon fiber (CF)/GNP and CF/MWCNT‐reinforced hybrid composites were comparatively investigated. The composites were fabricated through melt blending/compression molding and subsequently characterized in terms of morphological, fiber length, electrical properties, and EMI shielding effectiveness (EMI SE). Morphological imaging revealed a good adhesion between the fillers and the matrix, indicating a favorable interaction. The fiber length analysis demonstrated that fiber lengths were longer in CF/GNP hybrid composites than in CF/MWCNT. The EMI SE measurements showed the synergistic effects of the fillers in the X and Ku bands. The highest EMI SE values at 10 GHz and 16 GHz for the 20CF‐5GNP composite were 34 and 40 dB, respectively.