抗靜電MMA／DVB／TiO（下標 2）光學奈米複合材料之製備及物性的研究

Studies on Preparation and Physical Properties of Anti-Static Transparent MMA/DVB/TiO(subscript 2) Nanocomposites

10.7060/KNUJST.201112.0019

陳榮輝(Jung-Hui Chen)；黃宣詠(Syuan-Yong Huang)；鄭定祐(Ting-Yu Cheng)

二氧化鈦 ； 交聯劑 ； 抗靜電 ； 透明性 ； TiO(subscript 2) ； DVB ； transparency

高雄師大學報：自然科學與科技類

31期（2011 / 12 / 01）

19 - 34

繁體中文

本研究的主要目的為開發具抗靜電且具高透明性高分子光學薄膜。首先將Ti（OBu）（下標 4）以HEMA作有機化改質，以增進其與有機高分子基材的鍵結相容性。然後藉由熱聚合反應將改質前驅物HEMA／TiO（下標 2）與MMA／DVB的異丙醇溶液及BPO均勻摻混後，加熱至60℃進行預聚合反應，並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。合成時，有機/無機組成配方、導電填充劑用量、摻混合成程序及硬化條件為此新穎光學薄膜材料研究上主要影響變因。所製備高分子奈米複合材料薄膜之微相結構及表面型態學性質以SEM精密儀器檢測分析，並利用TGA、DSC與Photo-UV光譜儀針對其機械物性、熱性質、導電性及透明性等材料性質量測分析。實驗測得PMMA／DVB／HEMA裂解溫度為372℃，於添加10%的TiO（下標 2）時，PMMA／DVB／HEMA熱裂解溫度在可提升至392℃。藉由DSC測定，在200℃以下並無玻璃轉化溫度（Tg）的存在。其表面電阻從3.47×1013 Ω／cm^2下降至2.36×108 Ω／cm^2。在可見光範圍具有高透明性。此外，此奈米光學薄膜經SEM檢測結果確認無機微粒均勻分布且平均小於100nm。最後並對開發之具有透明性、耐熱性及抗靜電性薄膜作為實務光學元件上之應用評估。

The main object of this research is to develop highly transparent polymeric films with the anti-static property. In order to enhance the miscibility between inorganic and organic phases, a coupling agent, HEMA/TiO(subscript 2) precursor, was made from HEMA and Ti (OBu) (subscript 4). The HEMA/TiO(subscript 2) precursor was subsequently mixed with a homogeneous isopropyl alcohol solution of MMA/DVB and BPO initiator. This reaction solution was prepolymerized at 60℃. Finally, the coated thin film was crosslinked by heat to form a highly transparent thin film with good optoelectronic properties from hybrid organic-inorganic nano-composites. The conductive filler content, the reaction procedure and the curing conditions were the control parameters for this study. The morphology structure of nano-composite film was investigated by SEM. Then, the solution is spin-coated with the spin coator at room temperature. According to the results of TGA survey, the thermal decomposition temperature (Td) of pure polymer was 372℃. When the metal oxide (TiO(subscript 2)) was added to the polymer, the thermal decomposition temperature (Td) elevated to 392℃. The glass transition temperature was not detected below 200℃ by DSC. The surface resistance of hybrid films was reduced from 3.47×10^13 Ω/cm^2 to 2.36×10^8 Ω/cm^2. According to the morphology structure estimated by SEM, the optic thin films were evenly distributed with inorganic particles and the average particle size of these composites was less than 100nm. The excellent optical transparency was achieved in the visible region. The properties including thermal properties, electrical conductivity and light transparency were measured and discussed. Finally, the potential of these new synthetic films applied to the optical field was evaluated.