| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Fluorinated Titania Nanoparticle-Induced Piezoelectric Phase Transition of Poly(vinylidene fluoride) |
| 초록 |
We prepared F-coated rutile titanium dioxide nanoparticles (r-TiO2 NPs) via simple thermal annealing of titania NPs in poly(vinylidene fluoride) (PVDF) and demonstrated that the F-coated r-TiO2 NP-doped composite film could efficiently induce piezoelectric phase transition of nonelectroactive PVDF due to highly electronegative F bonds on the surface of these NPs.. In the case of a 2.0wt % composite film, 99.20% of the nonelectroactive PVDF was transformed into the electroactive phase. Additionally, utilizing the F-coated r-TiO2 NPs for a piezoelectric device led to an enhancement of the piezoelectric performance. With the 5.0wt % composite film, the resulting piezoelectric device exhibited voltage generation of 355mV, whereas a device with the innate r-TiO2 NPs exhibited voltage generation of only 137mV. Furthermore, because of optical inactivity of F-coated r-TiO2 NPs, the piezoelectric films exhibited high stability under 64 h of photoirradiation at an intensity of 0.1W/cm2. |
| 저자 |
김승현1, 하종욱2, 이상구1, 손은호1, 박인준1, 강홍석1, 이기라3
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| 소속 |
1한국화학(연), 2솔브레인, 3성균관대 |
| 키워드 |
PVDF; Titanium dioxide nanoparticles; Piezoelectric device; Photostability
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| E-Mail |
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