| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 봄 (04/08 ~ 04/09, 대전컨벤션센터) |
| 권호 |
35권 1호 |
| 발표분야 |
고분자 가공/복합재료 |
| 제목 |
Characterization of clay dispersion in the polymer nanocomposites by rheological and dielectric properties |
| 초록 |
In this study, polypropylene/clay composites were investigated by rheological properties and dielectric properties to define heterogeneity of clay dispersion in each polymer matrix. Clay dispersion was controlled by applying electric field. The non-terminal behaviors in the storage modulus at low frequency were gradually increased with increasing applying electric field. When the clay dispersion increased, electrode polarization phenomenon was increased in real component of complex dielectric constant due to the contribution of ionic conduction. And the conductivity relaxation time decreases with increasing clay dispersion in imaginary part of the electric modulus. The degree of symmetry in M” is related to conductivity relaxation time distribution. Distribution of conductivity relaxation time becomes narrow when the clay morphology changes from partially intercalated dispersion to exfoliation. Finally, we related clay dispersed morphologies in TEM images with dielectric modulus. |
| 저자 |
임형택, 안경현, 이승종, 이성한, 홍인국
|
| 소속 |
서울대 |
| 키워드 |
clay nanocomposites; dielectric properties
|
| E-Mail |
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