POS7-1582
Dual Metal-Ligand Coordination Reinforcement in Thermoplastic Polyurethane Nanocomposites via Zn²⁺ Bridging and Functional Nanofillers
Topic
S7. Innovations in Polymeric Composites: From Design and Processing to Industrial Applications
When and Where
Sep 30, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Heesuk KIM
Jinhye BAE
Presenter(s)
Won Wook Lee (Department of Applied Organic Materials Engineering, Chungnam National University)
Co-Author(s)
Abstract
Metal-ligand coordination has emerged as an effective strategy for enhancing the mechanical performance and dynamic properties of segmented polyurethanes. In this study, metal-ion-bridged thermoplastic polyurethane (TPU) nanocomposites were synthesized using methylene diphenyl diisocyanate, poly(tetramethylene glycol), and 2,6-pyridinedimethanol as an N-donor chain extender. An NCO-terminated prepolymer was first prepared and subsequently chain-extended to introduce pyridine ligands into the TPU hard segments. Zn2+ ions were then incorporated to form reversible coordination bridges between neighboring TPU chains. In addition, functional nanofillers were introduced to provide additional coordination sites through surface functional groups, promoting filler-matrix interactions. The resulting dual coordination network, consisting of interchain Zn2+ bridges and filler-assisted coordination structures, is expected to improve phase organization, stress transfer, and energy dissipation behavior. This study demonstrates a promising approach for designing mechanically robust TPU nanocomposites through synergistic metal–ligand coordination and interfacial engineering.
Keywords: Thermoplastic polyurethane (TPU), Metal-ligand coordination, Dual coordination network, Polymer nanocomposites
Keywords: Thermoplastic polyurethane (TPU), Metal-ligand coordination, Dual coordination network, Polymer nanocomposites
