| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 | 30권 2호 |
| 발표분야 | 기능성 고분자 |
| 제목 | Electrorhological properties of monodisperse nano-sized hollow polyaniline dicarboxylates salt suspensions |
| 초록 | The electrorheological (ER) fluids are composed of a colloidal dispersion of polarizable particles in insulating oil, and it's the rheological property changes by the applied electric field. When formulating the ER fluid for a specific application, some requirement must be satisfied, which are high yield stress under electric field, rapid response, and dispersion stability. While this characteristic makes valuable ER fluids in various industrial applications, their long term and quiescent application has been limited because of problems with particle sedimentation. In an effort to overcome sedimentation problem of ER fluids, the anhydrous ER materials of monodispersed hollow polyaniline (PANI) and dicarboxylate derivatives salt form respectively with submicron-sized suspension providing wide operating temperature range and other advantages were synthesized in a four-step procedure. The ER fluids were characterized by FT-IR, TGA, DLS, SEM, and TEM. Stability of the suspensions was examined by an UV spectroscopy. The rheological and electrical properties of the suspension were investigated Couette-type rheometer with a high voltage generator, current density, and conductivity. The suspensions showed good ER properties, durability, and particle dispersion. Fig 1. Schematic illustration of the formation mechanism of hollow polyaniline dicarboxylate derivatives salt form. |
| 저자 | 성보현, 최웅수, 임미정 |
| 소속 | 한국과학기술(연) |
| 키워드 | ER fluid; polyaniline; polyaniline dicarboxylate; hollow sphere |
