论文部分内容阅读
以正硅酸四乙酯(TEOS)为硅源、三嵌段共聚物(F127)为表面活性剂,聚碳酸酯膜为硬模板,并采用抽滤法在聚碳酸酯膜内的亚微米级孔道中组装介孔氧化硅从而制备出有机(聚碳酸酯)/无机(介孔氧化硅)复合介孔膜.通过扫描电镜、能量分散光谱以及透射电镜等实验表征了该有机/无机复合介孔膜的组成、结构及形貌.研究结果表明:通过该方法可以在聚碳酸酯膜内孔道中形成长度为9μm、直径为200nm的一维氧化硅棒状材料,且该棒状材料具有无序蠕虫状和有序体心立方的混合介孔结构,有序体心立方介孔的平均孔径约为8.5nm.另外,初步考察了该复合介孔膜对生物酶的物理吸附行为,结果表明其对肌红蛋白酶的单位吸附负载量为5.85mg/g.
Tetraethylorthosilicate (TEOS) as the silicon source, triblock copolymer (F127) as the surfactant, the polycarbonate film as a hard template, and the use of suction filtration in the polycarbonate membrane submicron The mesoporous silica was prepared by the assembly of mesoporous silica into organic / inorganic (mesoporous silica) composite mesoporous membranes. The organic / inorganic composite mesoporous materials were characterized by scanning electron microscopy, energy dispersive spectroscopy and transmission electron microscopy. The structure, morphology and morphology of the films were investigated.The results show that one-dimensional silicon oxide rod with a length of 9μm and a diameter of 200nm can be formed in the pores of the polycarbonate film by this method and the rod- And an ordered body-centered cubic mixed mesoporous structure, the average pore size of the ordered body-centered cubic mesopores is about 8.5 nm. In addition, the physical adsorption behavior of the composite mesoporous membrane to the biological enzyme was preliminary investigated. The unit adsorption capacity of the hemoglobin was 5.85 mg / g.