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  • 學位論文

以金屬有機骨架與高分子合成薄膜改善劣化液晶之電性

Improved Electrical Properties of Degraded Liquid Crystal by (Metal–Organic–Framework/Polymer) Films

指導教授 : 徐芝珊

摘要


摘要 本論文旨在探討以金屬有機骨架(Metal–Organic–Framework)材料與高分子材料複合成高分子薄膜,透過MOF材料中的孔洞結構純化劣化液晶,使劣化液晶的電學特性能有效得改善。 研究結果顯示,高分子薄膜自身並無明顯的吸附能力,加入MOFs材料使其具有吸附水氣的能力。利用薄膜處理劣化液晶,由介電頻譜術及電壓保持率等方法量測到液晶的電性有明顯的回復。而在其中再添加具陰電性基團的材料AMPS(2-acrylamido-2-methylpropane sulfonic acid)後,可進一步提高純化效果。 製成的薄膜可快速地與液晶分離,使得液晶與薄膜都得以再次使用,達到環保的效果。

關鍵字

金屬有機骨架 薄膜 液晶

並列摘要


Abstract This thesis focuses on the Metal–Organic–Frameworks (MOFs) doped polymer films which improve the electrical properties of degraded liquid crystals (LCs) by taking the advantages of the absorption characteristics of MOFs. The research result shows that the pure polymer films are not good absorbers. However, doping MOF material in the polymer films can improve the absorbing ability of the films. And when immerse the doped films in the degraded liquid crystals (LCs), the electrical properties of the LCs can be recovered through the measurements of the dielectric spectroscopy and voltage holding ratio. By adding the electronegative material AMPS (2-acrylamido-2-methylpropane sulfonic acid) to the MOFs doped films, the purification is further improved. The doped polymer films can be separated easily from the purified LCs and reusable, that is, achieves the eco purposes.

參考文獻


[42] 廖崑廷,《以金屬有機骨架與高分子混合材料改善劣化液晶之電性》,碩士論文,中原大學物理研究所,民102年7月。
[44] 蔡宗育,《以金屬有機骨架/高分子複合材料回復劣化液晶之電性》,碩士論文,中原大學物理研究所,民103年7月。
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[2] Cheng-Ting Huang, Kun-Ting Liao, Chia-Her Lin, Jy-Shan Hsu, and Wei Lee, “Improved electric properties of degraded liquid crystal using metal–organic frameworks,”Applied Physics Express, 6 121701 (2013).
[3] Hailian Li, Mohamed Eddaoudi, M. O'Keeffe & O. M. Yaghi, “Design and synthesis of an exceptionally stable and highly porous metal-organic framework,” Nature 402, 276-279 (18 November 1999).

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