POS1-0380
Design and Synthesis of Rigid Bio-derived Isosorbide-based Hyperbranched Polymers
When and Where
Nov 30, -0001
12:00am - 12:00am
Presenter(s)
Hyunhee Lee (Yonsei University)
Co-Author(s)
Abstract
Hyperbranched polymers (HBPs) have emerged as essential structural motifs in polymer science due to their unique dendritic architectures and internal cavities. However, conventional analogs such as hyperbranched polyglycerol (hPG) are often limited by their high chain flexibility and low glass transition temperatures (Tg), which restrict their applications in high-performance materials.
Herein, we report a new class of bio-derived isosorbide-based hyperbranched polymers designed to possess significantly enhanced conformational rigidity. By incorporating the rigid, hydrophobic bicyclic framework of isosorbide into the hyperbranched backbone, we successfully modulated the thermal and structural properties of the architecture. An isosorbide-based monoglycidyl ether monomer was synthesized and polymerized via ring-opening multibranching polymerization (ROMBP) using a t-BuP4 catalyst. This method allowed for the rapid synthesis (within 5 h) of high-molecular-weight polymers (up to 184,000 g mol−1) with narrow dispersities.
Detailed structural and thermal characterization by NMR, GPC, DLS, and DSC confirmed the well-defined hyperbranched architecture and a significantly elevated Tg compared to conventional hPG. Our results demonstrate that the introduction of rigid bicyclic moieties provides a robust and tunable platform for engineering the physical properties of hyperbranched materials. This bio-derived synthetic approach offers a versatile strategy for developing advanced, thermally stable, and rigid polymer architectures suitable for diverse functional applications.
Herein, we report a new class of bio-derived isosorbide-based hyperbranched polymers designed to possess significantly enhanced conformational rigidity. By incorporating the rigid, hydrophobic bicyclic framework of isosorbide into the hyperbranched backbone, we successfully modulated the thermal and structural properties of the architecture. An isosorbide-based monoglycidyl ether monomer was synthesized and polymerized via ring-opening multibranching polymerization (ROMBP) using a t-BuP4 catalyst. This method allowed for the rapid synthesis (within 5 h) of high-molecular-weight polymers (up to 184,000 g mol−1) with narrow dispersities.
Detailed structural and thermal characterization by NMR, GPC, DLS, and DSC confirmed the well-defined hyperbranched architecture and a significantly elevated Tg compared to conventional hPG. Our results demonstrate that the introduction of rigid bicyclic moieties provides a robust and tunable platform for engineering the physical properties of hyperbranched materials. This bio-derived synthetic approach offers a versatile strategy for developing advanced, thermally stable, and rigid polymer architectures suitable for diverse functional applications.
