本研究採用一端具有親水基和另一端具有疏水基的三嵌段兩性高分子(Amphiphilic triblock copolymers, ABCs)PEO/PPO/PEO copolymer 溶於水中，來取代低分子量陽離子界面活性劑 CTAB，形成柱狀微胞(Cylindrical micelles)作為模板(Template)，將親水性的矽酸鹽合成初產物，最後用溶劑迴流方式把當模板的嵌段共聚合體去除，所得之介孔物質用小角度 X光散射儀SAXS測量其結晶構造; 並以掃描電子顯微鏡及穿透式電子顯微鏡觀察其形態; 結果發現兩性高分子親水性嵌段EO及疏水性嵌段PO的比例 EO/PO比值不同，會影響所得之介孔物質的形態，低EO/PO比值的兩性高分子可以合成層狀的結構相(Lamella mesophase)，中間EO/PO比值的兩性高分子可以合成六角排列結構相(Hexagonal mesophase)的 SBA-15，而高 EO/PO 比值的兩性高分子可以合成立方結構相(Cubic mesophase)的SBA-16。Mesoporous silicate materials were synthesized using amphiphilic triblock copolymers as templates. Small-angle x-ray scattering techniques were adopted for characterization of the mesoporous structure obtained whereas scanning and transmission electron microscopy for morphological studies. We found that triblock copolymers can successfully serve as templates for the synthesis of lamellar mesophase, hexagonal mesoporous and cubic mesostructured silica from tetraethylorthosilicate (TEOS). A lower EO/PO ratio of the triblock copolymer promotes the formation of lamellar mesostructured silica, A medium EO/PO ratio favors hexagonal SBA-15 mesoporous materials, while a higher EO/PO ratio favors cubic mesostructured silica, i.e. SBA-16.
