POS9-0441
Mechanochemical Atom Transfer Radical Polymerization Unlocks Functional Methacrylate Lifecycles of Controlled Synthesis, Force-Activated Degradation, and Depolymerization
Topic
S9. Polymer Technology for Sustainability
When and Where
Sep 30, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Heesuk KIM
Jinhye BAE
Presenter(s)
Gyeongjin Kwon (Yonsei university)
Co-Author(s)
Abstract
Mechanochemical polymerization provides a solvent-free alternative to conventional solution-based methods, yet achieving controlled radical polymerization remains challenging due to competing propagation and degradation. Here, we investigate mechanochemical ATRP to improve polymerization control and systematically examine polymer synthesis, degradation, and depolymerization. By expanding the scope of aromatic monomers, we reveal that pendant group size significantly influences the mechanochemical ATRP process. The propagation rate constant exceeds that of traditional ATRP, indicating a faster reaction in the solid state. Quantitative MALDI-ToF analysis elucidates the contributions of main-chain, pendant group, and end-group scission, confirming steric effects on degradation pathways. Additionally, depolymerization occurs alongside polymer degradation, offering further insights into mechanochemical ATRP. These findings contribute to improved reaction control strategies and a deeper mechanistic understanding of ATRP under ball milling.
