Szczegóły publikacji
Opis bibliograficzny
Decoupling flame retardancy from mechanical embrittlement in polyacrylonitrile fibers via carbon black integration / Piotr K. SZEWCZYK, Michał KOPACZ, Urszula STACHEWICZ // Composites ; ISSN 1359-835X . Part A, Applied Science and Manufacturing ; ISSN 1359-835X. — 2026 — vol. 209 art. no. 109948, s. 1–10. — Bibliogr. s. 9–10, Abstr. — Publikacja dostępna online od: 2026-05-19
Autorzy (3)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 167977 |
|---|---|
| Data dodania do BaDAP | 2026-06-03 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.compositesa.2026.109948 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Composites, Part A, Applied Science and Manufacturing |
Abstract
With increasing safety requirements across aerospace, textile, and energy sectors, there is a critical demand for fibers that simultaneously exhibit flame resistance and mechanical robustness. Here, a scalable strategy is reported for engineering flame-retardant, mechanically resilient polyacrylonitrile (PAN) yarns via direct incorporation of carbon black (CB) during electrospinning, thereby overcoming the intrinsic trade-off associated with oxidative stabilization. Multiscale characterization demonstrates that CB preserves defect-free fibrous morphology and enhances stabilization-induced cyclization. Thermally, CB-modified oxidized fibers exhibit reduced peak heat release rate (69.59 ± 2.36 W g−1) and total heat release (4.35 ± 0.03 kJ g−1), alongside a delayed decomposition onset (291.5 ± 5.9 °C), indicating suppressed volatile evolution and enhanced char formation. Flame testing reveals a nearly threefold increase in burning time relative to pristine PAN, with reduced structural degradation. Importantly, CB mitigates oxidation-induced rigidity, reducing stiffness by approximately 86% relative to PANOX (Young’s modulus: 0.19 vs. 1.37 MPa). Mechanistically, CB promotes the formation of a cohesive carbonaceous network that enhances heat shielding, restricts mass transport, and improves stress dissipation. These results establish CB as an industrially viable nanofiller for decoupled optimization of flame retardancy and mechanical performance.
