Toward High-Value Circular Pathways for Polymer Waste: Process-Structure-Property Strategies in Mechanical Recycling, Filament Re-Extrusion, and Additive Manufacturing
Küçük Resim Yok
Tarih
2026
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Mdpi
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The global polymer waste burden has catalyzed a shift from linear production-use-disposal systems to circular models that prioritize recycling, reuse, and value retention. This article proposes an integrated, technology-ready roadmap for mechanical recycling and reuse of commodity and bio-based polymers via filament re-extrusion and Additive Manufacturing (AM). Building upon recent findings on performance envelopes of virgin vs. recycled Polylactic Acid (PLA) filaments processed by Fused Deposition Modeling (FDM), process parameter sensitivities (layer height, infill density) and their statistical optimization, and functional reinforcement routes (aluminum: Al, alumina: Al2O3, titanium: Ti, and Nano Boron Nitride: nano-BN), we articulate (1) a process-structure-property (PSP) mapping; (2) a low-defect, low-energy filament re-extrusion protocol; and (3) a graded-value strategy for upcycling mixed polymer streams. Across case analyses, we show that recycled PLA can achieve near-parity with virgin PLA when extrusion quality and printing parameters are controlled, and that ceramic/metal nanofillers enable thermal management and biocompatibility benefits crucial for durable reuse scenarios.
Açıklama
Anahtar Kelimeler
[Keyword Not Available]
Kaynak
Polymers
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
18
Sayı
5
