| 학회 |
한국고분자학회 |
| 학술대회 |
2022년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
47권 1호 |
| 발표분야 |
콜로이드 및 분자조립 부문위원회 |
| 제목 |
Nanocomposite Films of Polyethersulfone and Core–shell Nanoparticles for Flexible Display |
| 초록 |
Optically transparent and thermo-mechanically stable nanocomposite films of polyethersulfone (PESU) and core–shell nanoparticles are prepared by a solvent casting and heat pressing method. As a filler, reactive ZnS-Silica core–shell nanoparticles are prepared by a modified sol–gel process, of which reactive aromatic amine groups are chemically bonded with the polymer matrix. For optical transparency, the shell thickness is adjusted and the core diameter of the core–shell nanoparticles is adjusted to match the refractive index of PESU. For the composite film with more than 15 wt% of core–shell nanoparticles in PESU, the coefficient of thermal expansion is significantly reduced down to 12 ppm/°C in the temperature range of 30–90 °C, which is 80% less than the value of the bare PESU film (≈65 ppm/°C). Furthermore, their mechanical property is also significantly improved. For 15 and 30 wt%, PESU nanocomposite films show 64 and 74 MPa of yield strength and 1.36 and 2.0 GPa of Young's modulus, respectively, while pure PESU films show only 44 MPa of the yield strength and 0.64 GPa of Young's modulus. Finally, the organic light emitting diode device is demonstrated on the PESU nanocomposite substrate. |
| 저자 |
김재현1, Nguyen Xuan Viet Lan1, Uddhav Kulkarni1, 김찬호1, 조성민1, 유필진1, 김덕준1, Marc Schroeder2, 이기라3
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| 소속 |
1성균관대, 2BASF Electronic Materials R&D Center Asia, 3포항공과대 |
| 키워드 |
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| E-Mail |
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