MMA/MAA/TiO2抗靜電光學奈米複合材料之合成與物性的研究

本研究是利用Ti（OC4H9）4以sol-gel 法將無機物TiO2加入有機高分子PMMA 中，合成MMA/MAA/TiO2抗靜電光學奈米複合材料。為了增進其與有機高分子基材的鍵結相容性，吾人以甲基丙烯酸（MAA）作為偶合劑進行有機化改質，藉由熱聚合方式聚合改質前驅物與MMA/架橋劑，然後於室溫下以旋轉塗佈機塗佈成薄膜，最後將此薄膜高溫硬化，再利用TGA、DSC、Photo-UV光譜儀進行耐熱性、透光性、表面電阻與薄膜結構檢測分析。由實驗結果顯示，當無機成份提高時，複合材料本身的熱性質、硬度會有明顯的提升，且藉由DSC測定，在50℃~200℃以下並無玻璃轉移溫度（Tg）的存在，顯示複合光學薄膜具有極佳的熱穩定性與化學結構安定性。當TiO2 添加達2.56%時，表面電阻從1.21×10^14Ω/平方公分下降至7.31×10^9Ω/平方公分，而且在可見光範圍內具有高透明性。此複合材料之薄膜經穿透式電子顯微鏡(TEM)檢測結果確認無機微粒均勻分佈且平均粒徑為12~24nm，小於100 nm，符合奈米級標準。

關鍵字

TiO2 ； MMA ；三烯丙基異三聚氰酸酯；抗靜電

並列摘要

The objective of this research is to develop highly transparent polymeric film with anti-static property. In order to enhance the miscibility between the inorganic and the organic phases, the coupling agent made from MAA and Ti(OBu)4 will become more organic-like. Then MAA/titania inorganic composites are copolymerized with methyl methacrylate and cross-linking agant (triallyl isocyanurate) by heat polymerization. The composites are spin-coated with the spin coater at room temperature. The thermal properties, the surface resistance and light transparency are measured and discussed.The experimental results showed that the thermal stability and hardness of the hybrid materials are considerably improved relative to pure PMMA. The glass transition temperature is not detected below 200℃ by DSC. The surface resistance of hybrid films is reduced from 1.21×10^14 Ω/cm^2 to 7.31×10^9 Ω/cm^2 below 2.56% formula content of titania. The excellent optical transparency is achieved in the visible region. According to the morphological structure, which is estimated by TEM, the optic thin films are evenly distributed with inorganic particles and the average size of particle is less than 100 nm. Finally, the potential of these new organic anti-static transparent films being used in the optoelectronic devices will be discussed.

並列關鍵字

TiO2 ； MMA ； TAIC ； anti-static

國際替代計量

MMA/MAA/TiO2抗靜電光學奈米複合材料之合成與物性的研究

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