INS11-0963
Development of Fully Recyclable Flame-Retardant Self-Reinforced Composites via Multifunctional mPAO Additive
Topic
S11. PMSE–PSK50 Anniversary Symposium: Advancing Polymer Science for a Sustainable and Intelligent Future
When and Where
Sep 30, 2026
15:50 - 16:15
Room 110
Session Chairs
Gregory PETERSON
Presenter(s)
Ji-Eun Jeong (KRICT (Korea Research Institute of Chemical Technology))
Co-Author(s)
Abstract
The demand for sustainable and high-performance polymer composites has intensified, making recyclability a critical objective in modern materials engineering. While self-reinforced composites (SRCs) offer a promising solution to these environmental challenges, the necessary incorporation of functional additives—such as flame retardants—often compromises their inherent recyclability and mechanical integrity. This study investigates the utilization of metallocene poly(α-olefin) (mPAO) as a multifunctional additive to optimize the fabrication process, mechanical properties, and recyclability of high-density polyethylene (HDPE)-based SRCs. To impart thermal resistance, an environmentally compliant, ionic phosphorus-based flame retardant (ADK) was integrated into the composite. The branched architecture and low molecular weight of mPAO significantly improve melt processability by effectively lowering the matrix viscosity. This rheological enhancement not only facilitates a highly uniform dispersion of solid ADK but also strengthens the interfacial adhesion between the fibers and the matrix. Notably, the optimized composite formulation achieved an excellent UL-94 V-0 flame-retardant rating while maintaining robust mechanical strength. Furthermore, by applying a simple sequential washing step with aqueous sodium hydroxide and hexane, both the ADK and mPAO additives were selectively removed, enabling the successful recovery of high-purity HDPE.
