Tailoring the Crystallization Behavior and EMI Shielding Performance of PEEK/PEI Blends via N-rGO and Aluminum Incorporation
Polymer Engineering and Science, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1002/pen.70949
- Dergi Adı: Polymer Engineering and Science
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Chimica, Compendex, INSPEC, Engineering Source (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Anahtar Kelimeler: crystallization behavior, EMI shielding, PEEK, PEI
- Gazi Üniversitesi Adresli: Evet
Özet
Enhancing the electromagnetic interference (EMI) shielding performance of high-performance thermoplastics is critical for aerospace, defense, and next-generation electronics. In this work, a novel hybrid PEEK composite was developed by co-incorporating nitrogen-doped reduced graphene oxide (N-rGO) and aluminum (Al) particles using polyetherimide (PEI) as a dispersion-enhancing and interfacial coupling agent. The use of PEI enabled homogeneous distribution of both conductive and metallic fillers within the PEEK matrix while preserving melt-processability and mechanical integrity. This synergistic filler architecture promotes multi-mechanism EMI shielding through electrical conduction, interfacial polarization, dipolar relaxation, and multiple internal reflections. The results highlight the potential of this lightweight, cost-effective, and processable composite for advanced EMI shielding applications, addressing a critical gap in current polymer-based shielding materials.