INS14-0855
Ionic Polyurethanes: Monomer Designs, Polymer Structures and Properties
Topic
S14. The 2nd PSK / CCS-PD Joint Symposium on Frontiers in Polymer Science and Engineering
When and Where
Oct 1, 2026
15:50 - 16:15
Room 203
Session Chairs
Woo-Jin SONG
Presenter(s)
MINJAE LEE (Kunsan National University)
Co-Author(s)
Abstract
Ionic polymers derived from ionic liquid-based monomers have been extensively investigated for a wide range of applications. In particular, growing attention has recently been directed toward their use in energy devices requiring a flexible solid-state electrolyte. However, most reported systems are based on vinyl-type monomers for radical polymerizations, whereas ionic polymers prepared through step-growth polymerization remain relatively underexplored. In our recent works, a series of ionic polyurethane materials have been realized from the corresponding ionic liquid monomers. For the synthesis of linear ionic polyurethanes, a pyrrolidinium salt-based monomer containing two hydroxyl (-OH) functionalities was designed and synthesized. The resulting ionic monomer was polymerized with three different diisocyanate chain extenders to obtain ionic polyurethane materials, and the physicochemical properties were systematically investigated upon the different the pyrrolidinium counter-anions and chain extender structures. In addition, a new ionic crosslinker was developed to construct ionic network polymers. A hexagonal piperazinium cation incorporating three hydroxyl functionalities was successfully synthesized and utilized as a multifunctional ionic building block. The resulting ionic network polymers, containing urethane, urea, and disulfide linkages, exhibited both ionic conductivity and self-healing behavior.
