| 학회 | 한국고분자학회 |
| 학술대회 | 2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 | 29권 2호, p.223 |
| 발표분야 | 고분자 가공/블렌드 |
| 제목 | Synthesis and Characterization of exfoliated clay nanocomposite with water-soluble polypyrrole graft copolymer |
| 초록 | Polypyrrole (PPY) is one of the most technologically important materials because of its environmental stability in a conducting form, easiness and low cost of synthesis, unique redox properties, and high conductivity. However, the physical properties of PPY are not satisfactory for practical applications. In this regard, PPY/clay nanocomposite may open a way to construct novel organic-inorganic hybrid systems showing electrical conductivity as well as good physical properties. Many studies on PPY/inorganic host nanocomposites have been carried out, but they were mainly focused on the intercalative structure. Exfoliated nanocomposites can attain degrees of stiffness, strength and barrier properties with far less inorganic content than is used in conventionally filled polymer composites. The higher the degree of exfoliation in PPY/clay nanocomposites, the greater the enhancement of these properties. Exfoliated PPY/clay nanocomposites were prepared by in-situ polymerization of pyrrole onto pre-exfoliated water-soluble poly(styrenesulfonic acid-co-pyrrolylmethyl styrene) (P(SSA-co-PMS))/clay nanocomposite or by simple blending of poly(styrenesulfonic acid-g-pyrrole) (PSSA-g-PPY) with clay. When an aqueous mixture of P(SSA-co-PMS) and clay was treated with 1M HCl (aq.), clay layers are exfoliated into the polymer matrix due to the electrostatic interaction between the positive charge of nitrogen (NH3+) in P(SSA-co-PMS) and the negatively charged surface of clay layers. The electrical conductivity of the nanocomposite is slightly lower than that of pure PSSA-g-PPY, but the thermal stability and coatability of the nanocomposite become better as compared with PSSA-g-PPY. Fig.1 Schematic representation of preparation of polymer/clay nanocomposite. Fig.2 XRD patterns of polymer/clay nanocomposite. |
| 저자 | 배우진1, 조원호1, 박연흠2, 김건형1 |
| 소속 | 1서울대, 2성균관대 |
| 키워드 | polypyrrole; clay; nanocomposite |
