| 초록 |
Although polypyrrole (PPY) has been widely studied as a novel conducting polymer due to its good thermal and environmental stability as well as superior conductivity, this conducting polymer is usually known to be insoluble in organic solvents. This poor processibility is due to the fact that the PPY has strong inter- and intra molecular interaction and crosslinking. A plasticizing dopant, di(2-ethyl hexyl) sulfosuccinate (DEHS) was used to polymerize PPY, and PPY/DEHS was soluble in various common organic solvents such as DMF(dimethylformamide), NMP(n-methyl-2-pyrrolidinone) and CF(chloroform). Organoclays (OMMT) are also swollen in the same solvent and PPY chains are intercalated into OMMT layers. The X-ray diffraction (XRD) experiment showed the intercalation of PPY into nanoscaled clay layers. FT-IR and NMR were used for investigation of molecular structure. SEM, TGA, and picoammetor were also used for physical characterization. Furthermore, these nanocomposite materials were adopted for electrorheological (ER) characterization by a rotational rheometer (Physica, MC 120, Germany) equipped with a DC high voltage generator system. |
