POS1-0385
Effect of intramolecular interactions on the morphologies of bifunctional polymers
When and Where
Nov 30, -0001
12:00am - 12:00am
Presenter(s)
Yeonji lee (POSTECH)
Co-Author(s)
Abstract
Polymers bearing tethered ionic moieties have attracted considerable interest for their applications in areas such as polymer electrolytes and functional additives. However, controlling their properties, such as ionic conductivity and mechanical properties, through rational design of polymer repeating units remains largely underdeveloped. In this study, we synthesize polymers bearing two distinct functional groups covalently attached at precisely determined positions (hereafter referred to as bifunctional polymers), designed to enable tailored molecular interactions. To this end, phosphonic acid and dimethylamine groups were incorporated into styrene-based monomers and subsequently polymerized via reversible addition-fragmentation chain transfer (RAFT) polymerization. These functional groups are positioned in close proximity to effectively promote acid-acid and acid-base interactions. Intra- and intermolecular interactions, as well as the thermal transitions of the resulting set of bifunctional polymers, were investigated, revealing widely tunable glass transition temperature and chain packing structures despite having identical molecular weights. Ionic conductivity and mechanical properties of these polymers upon salt doping were further investigated.
