【作者】 戴欣；

【导师】 吕长利；

【作者基本信息】 东北师范大学 ， 高分子化学与物理， 2010， 硕士

【摘要】 多孔材料由于其具有表面积较大、相对密度较低等特殊性质,近年来受到了越来越广泛的关注。一些多孔材料更是由于其特殊的孔结构、可控的孔径大小和孔径分布、良好的热和机械稳定性以及其它特殊的功能特性,使其在医药、化工、冶金、环境保护、建材、海水淡化等诸多领域都有着广泛的应用前景。本论文主要着重于有序多孔膜的制备,主要分为两个部分。其一:基于原位自组装方法,通过基体聚酰胺酸对非表面活性剂类模板DBTA的诱导,制备了有序介孔SiO2/聚酰亚胺杂化自支持膜,并对其形成机理和基本性质进行了研究。其二:制备了三维有序大孔填充的有机-无机杂化质子交换膜。通过对pH值大小、NaCl浓度等对SiO2 opal模板形成的影响研究,成功制备出微结构基本有序、面积较大较完整的SiO2 opal模板。通过SiO2 opal模板制备得到了三维大孔(3DOM) PI膜,并通过向3DOM结构的PI多孔膜内填充聚电解质制备了质子交换膜。这些新型纳/微米尺度有机-无机杂化材料在燃料电池、催化和低介电材料等方面具有潜在的应用价值。更多还原

【Abstract】 Porous materials have attracted more attention because of its large BET surface area, low density and other special properties. Many kinds of porous materials have special structure, controllable distributed pore size, thermal and mechanical stability etc. These special properties make this kind of materials have more potential application in many fields, such as medical, chemical industry, metallurgy, environmental protection, building materials, sea water desalinization etc.In this thesis, we focused on the preparation of the ordered porous membranes which contained two parts. First, we fabricated the self-standing hybrid membranes with ordered mesoporous structure. The main chain of PAA may participate in the assembling aggregation of the non-surfactant templates DBTA, which may result in the formation of the ordered mesoporous structure in hybrid films. Second, we prepared the pore-filling organic-inorganic hybrid proton exchange membranes. We succeed in fabricating SiO2 opal template with large area and ordered structure by studying the influence of pH and NaCl on the formation of SiO2 opal templates. Three-dimensional ordered macroporous (3DOM) PI membranes obtained from the templates of SiO2 opal were filled with polyelectrolyte to fabricate the hybrid proton exchange membranes. These new nano/macro-porous hybrid materials have widely application in fuel cell, catalysis and low dielectric materials.更多还原