利用溶膠－凝膠製備難燃性含氮、矽有機／無機奈米複合材料鑑定及型態學之研究

本研究針對利用自由基反應合成聚甲基丙烯酸甲脂複合材料，甲基丙烯酸甲脂與馬來酸酐先進行共聚合反應，以AIBN為起始劑，形成有機之共聚物，導入含胺基矽氧烷進行開環反應，使共聚物側鏈具有可進行溶膠－凝膠反應之矽氧烷官能基，其後摻配不同比例的含醚基三聚氰氨與四乙基矽氧烷單體，進行水解－縮合反應；藉此反應合成有機╱無機相互貫穿之網狀結構而使分子結構達到奈米等級，形成奈米複合材料，反應過程之官能基監測採紅外線光譜儀偵測官能基接枝及交聯反應，利用固態核磁共振光譜儀觀察溶膠－凝膠反應鍵結縮合密度，其結果顯示，有機相與無機相的水解縮合程度相當完整，掃描式電子顯微鏡進行元素分析及均勻分佈觀察奈米粒徑大小分析，由結果顯示出，二氧化矽顆粒均勻分散於基材中，無明顯相分離現象；光學性質方面，由於聚甲基丙烯酸甲脂具有較高光穿透度，鑑定複合材料隨著添加不同比例的氮、矽成份之穿透度變化，所製成之複合材料均擁有極佳的穿透度，顯示有機相與無機相有很好的相容性；藉由上述方式反應，期盼導入無機成份可有效改善聚甲基丙烯酸甲脂易燃特性。

關鍵字

聚甲基丙烯酸甲脂；溶膠－凝膠反應；奈米複合材料；傅立葉轉換紅外線光譜儀；超核導固態核磁共振儀

並列摘要

The study was focused on the preparation of PMMA hybrid. MMA reacted with MA via AIBN initiator to form the copolymer by free radical reaction, and then use APTS to react with the copolymer to synthesize the precursor which possess the OEt functional group to proceed the sol-gel reaction. HMMM and TEOS were added into precursor to form interpenetrating networks (IPN) of organic-inorganic structure via the sol-gel technology. FTIR was used to monitor the curing process of hybrid and NMR was utilized to characterize the structure of composites. From the results, the sol-gel reaction have proceed completely, the networks have been formed. SEM and EDS were applied to observe the morphology of nanocomposites and the particles are smaller than 100nm. It means the nanocomposites are prepared. UV/vis spectroscopy was used to identify the transparency of nanocomposites and the results show the composites possess excellent transparancy. It means that there is good compatibility between organic and inorganic phases.

並列關鍵字

PMMA ； Sol-gel ； nanocomposites ； FT-IR ； NMR

參考文獻

Mercado LA, Galià M, Reina JA. Silicon-containing flame retardant epxoy resins: Synthesis, characterization and properties. Polym Degrad Stab 2006;91:2588-2594.

Google Scholar

Lin CH, Feng CC, Hwang TY. Preparation, thermal properties, morphology, and microstructure of phosphorus-contaning epoxy/SiO2 and polyimmide/nanocomposites. Eur Polym J 2007;43:725-742.