本論文旨在探討以金屬有機骨架(MOF)與高分子材料混合,利用MOF材料中的孔洞,吸附回收液晶中的離子雜質進行純化。藉由與高分子混合後,增進其粒徑大小,以利過濾流程。並在高分子與MOF混合物中添加AMPS材料對液晶中的離子雜質進行吸附。藉由介電頻譜量測技術,觀察離子電荷所產生的電極極化影響;並配合電壓保持率的量測,進而探討添加AMPS增進純化液晶的效果,以利顯示元件之應用。 研究結果顯示,高分子聚合物自身並無增進MOF材料吸附效果的能力。但在高分子與MOF材料混合物中添加AMPS後,純化效果可以明顯的提升,由介電頻譜術及電壓保持率等方法可以確實量測到純化的效果。本論文揭示在高分子與MOF材料混合物中添加AMPS,於有助於減少液晶中的離子雜質,可用於回復劣化液晶,使得純化後液晶得以再次利用。
This thesis focuses on improving the electrical properties of degraded liquid crystals (LCs) by Metal–Organic-Framework (MOF) / polymer mixtures. Since the ionic impurities in the degraded LCs can be absorbed by the holes of MOF material, the LCs are purified after the MOF material is removed. To make the filter processes easier, the grain sizes of MOF material are increased by mixing MOF with polymer. Finally, we investigate the effects of doping AMPS (2-acrylamido-2-methylpropane sulfonic acid) in the MOF/polymer mixtures. The research result shows that the polymer is not a good absorber, and using polymer alone cannot improve the absorbing ability of MOF material. However, doping AMPS in the MOF/polymer enhances the ionic purification obviously via the measurement of the dielectric spectroscopy and voltage holding ratio (VHR). The electric properties of the purified LCs are very close to that of the original LCs. Therefore, the MOF/polymer-AMPS can be used to recover the degraded LCs and make them to be used again.