壓克力/二氧化鈦複合材料的製備與性質研究

Synthesis and Properties of PMMA/TiO2 Hybrid Materials

翁暢健(Chang-Jian Weng)

指導教授 ： 葉瑞銘

中原大學/理學院/化學研究所/碩士(2002年)

https://doi.org/10.6840/cycu200200309

摘要

本研究是藉由 Sol-gel方法在酸的催化下把無機物Titania (TiO2)加入有機高分子PMMA (poly methy1-methacrylate)中而得到奈米級的有機無機混成薄膜。為了提高有機高分子與無機物間之相容性，本研究採用HEMA(2-hydroxyl methacrylate) 做為整個反應中連結有機及無機相的偶合劑。反應中加入螯合劑ACAC（Acetylacetone）抑制整個反應速率，使製程易於控制。由實驗結果發現，當無機成份提高時，材料本身的熱性質、硬度會有明顯的提升，經表面接觸角的測試，當無機含量增加時，表面疏水性越佳，表面自由能降低，而材料curing溫度越高時其表面接觸角有下降的趨勢。最後由SEM測試結果可以證實所得的混成薄膜為奈米級的混成材料。由AFM分析結果可以得知所合成的薄膜材料具有好的表面平整度。

關鍵字

溶膠-凝膠法 ； 表面接觸角 ； 有機無機混成材料

並列摘要

Sol-gel derived poly(methyl methacrylate)-titania hybrid materials were synthesized by using 2-hydroxyethyl methacrylate as coupling agent. Titanium butoxide modified with 2-hydroxyethyl methacrylate was hydrolyzed to produce a titania network ,and then poly(methyl methacrylate) chains, formed in situ through a radical polymerization ,were chemically bonded to the forming titania network to synthesize a hybrid material. Transparent hybrid materials with different contents of titania were achieved. With increase of the titania content, the colours of the products changed from yellow to dark red. The experimental results demonstrated the thermal stability and hardness of the hybrid materials was considerably improved relative to pure PMMA. With increase of the titania content, we find contact angle of surface were change. By SEM and AFM studies, a smooth morphology was obtained from the as-synthesized hybrid material, implying that the organic PMMA and inorganic TiO2 hybrideize at the nanoscale or molecular level.

並列關鍵字

contact angle ； sol-gel ； organic and Inorganic Hybrid materials

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