| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Core-shell conducting polymer nanoparticles hybridized three-phase flexible polyimide nanocomposite film with high dielectric constant |
| 초록 |
A three-phase polymer composite with a ferroelectric phase (BaTiO3) and conductive polypyrrole@polyimide (PPy@PI) core-shell nanoparticles embedded into polyimide (PI) matrix was prepared by using a simple direct mixing and solution casting process. PPy@PI core-shell nanoparticle as the conductive filler was synthesized to obtain homogeneous dispersion in PI matrix. The dependence of dielectric behavior on the BaTiO3 and PPy@PI contents was studied over a wide frequency range from 40 Hz to 1 MHz. The incorporation of low loading levels of PPy@PI nanoparticles to the PI/ BaTiO3 system led to a significant enhancement in dielectric constant with suppressed loss. The dielectric constant (Dk) of PI/BaTiO3/PPy@PI (25/75/5) hybrid was 62.65 at 1 kHz, being three times higher than that of the PI/BaTiO3 (25/75) nanocomposite. The fairly enhanced dielectric properties were due to synergistic enhancing of the ferroelectric ceramic filler, BaTiO3, and conductive filler, PPy@PI nanoparticles. |
| 저자 |
원종찬1, 김윤호1, 서동학2, 김병각1, 김용석1, 박노균1, 복창숙1, 윤현우1
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| 소속 |
1한국화학(연), 2한양대 |
| 키워드 |
polymer composite; dielectric property; conducting polymer; core-shell nanoparticle; polyimide
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| E-Mail |
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