| 초록 |
Transparent and heat resistant polymer materials have gained much attention in the field of next-generation flexible electronic devices. Herein, New poly(arylene ether)s (PAEs) with both transparency and heat-resistance were prepared by a polycondensation of 4-fluoro-4’(((fluorobenzoyl)phenyl)-oxy)diphenyl sulfone), an ordered-sequence aromatic dihalide, and cardo typed aromatic diols that contain fluorene or adamantane moiety. The resulting polymers were found to be amorphous by X-ray diffractometry, and Tg ranged from 228 to 270 ℃. Based on TGA data, they exhibited excellent thermal stabilities, showing 5% weight loss at 434-490℃. They had low thermal expansion coefficients of 59-74 ppm at temperature range of 50-200 ℃ as well as good mechanical properties with moduli of 1805-2265 MPa. The optical transmittance for the PAE films (ca. 40μm thick) was over 70% at 450-800 nm and they also showed water uptake of about 0.65% regardless of their chemical composition. |
