Effect of Glass Fiber and Mineral Filler Reinforcement on the Dielectric Relaxation and Structural Dynamics of PA6 Hybrid Composites
Journal of Applied Polymer Science, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1002/app.71583
- Dergi Adı: Journal of Applied Polymer Science
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Chimica, Compendex, INSPEC, Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Anahtar Kelimeler: dielectric properties, ductility, glass transition temperature, hybrid composites, PA6 (polyamide 6), relaxation processes
- İstanbul Üniversitesi Adresli: Evet
Özet
PA6 (Polyamide 6) hybrid composites (20% glass fiber (GF) and 20% mineral filler mixture of talc and CaCO3) are studied using dielectric spectroscopy (DS) to determine dielectric and structural properties, and to highlight the effect of the reinforcement, filler material (glass fiber, talc, and CaCO3 mixture), and thickness. FT-IR and SEM characterization techniques are applied to reveal molecular and morphological structure. Dielectric measurements are performed over a temperature range of 223–373 K and a frequency interval of 1–106 Hz. Dielectric and structural parameters have been analyzed by Cole-Cole and Vogel-Fulcher-Tamman (VFT) models, respectively, for sample thicknesses of 0.2, 0.75, and 2.5 mm. The results reveal the Maxwell-Wagner-Sillars (MWS), α-, β-, and γ-relaxations. Besides, (Formula presented.) and (Formula presented.) are defined to emphasize the effect of moisture absorption. It is detected that reinforcement increased the glass transition temperature ((Formula presented.)) related to the unplasticization effect by 20 and 40 K for varying thicknesses. (Formula presented.) values obtained from the electric modulus ((Formula presented.)) and the AC conductivity mechanism are consistent with each other. FT-IR analysis and SEM images confirm the effect of fillers on moisture absorption and filler incorporation, respectively.