[1PS-226]
우수논문발표상 응모자A Fast-Responding Thermally Activated Shape Memory Polymer Composites with Embedded 3D Interconnected Hexagonal Boron Nitride
발표자정세윤 (경북대학교)
연구책임자남기호 (경북대학교)
Abstract
Thermally responsive shape-memory polymers (SMPs) are attractive for aerospace deployable structures in harsh environments. Fully aromatic polybenzimidazoles (PBIs) provide excellent thermal stability but lack shape-memory behavior due to rigid backbones. Here, flexible aliphatic segments were introduced into PBIs to enable reversible transitions via hydrogen-bonded crosslinks. To improve thermal responsiveness, boron nitride (BN) was added as a conductive filler, and its noncovalent functionalization suppressed agglomeration, ensuring uniform dispersion and forming efficient thermal pathways. π–π stacking and hydrogen bonding with imidazole groups enhanced polymer–filler interactions, facilitating heat transfer and faster actuation. The resulting nanocomposites showed high shape fixity, rapid recovery, and retained strong thermal and mechanical stability, demonstrating an effective strategy for high-performance SMPs in next-generation aerospace applications.