Synergistic Effects of Conductive Polymer Coating on Titania for Enhanced Electrorheological Performance

초록

Herein, the synergistic effects of conducting polymer and hollow structure of titania in the electrorheological (ER) fluid are investigated. Firstly, the titania nanoparticles (H-TiO2) are synthesized following Stober, sol-gel, and sonication-mediated etching methods. A conducting polymers of polythiophene (PT), polypyrrole (PPy), and polyaniline (PANI) are then coated onto the H-TiO2 via vapor deposition polymerization (VDP) method, resulting in PT/-, PPy/-, and PANI/H-TiO2. In the ER application, shear stress of PT/H-TiO2-, PPy/H-TiO2-, and PANI/H-TiO2-based ER fluids are 9.4-, 6.5-, and 1.8-fold higher than the H-TiO2 based ER fluid. This enhancement is attributed to the existence of space charges generated from the conducting polymers. Hence, this study successfully examined the synergistic effects of ER performance by the presence of conducting polymers. -본 연구는 2025년 정부(방위사업청)의 재원으로 국방과학연구소의 지원을 받아 수행된 미래도전국방기술 연구개발사업임(No.915066201). Keywords: Electrorheological fluid, Conducting polymer, Vapor deposition polymerization, Hollow titania