| 초록 |
A series of porous nanofibrous polyimide networks with very small pore size and large surface area were prepared using sol-gel processing and supercritical carbon dioxide drying. Various functional dianhydrides and diamines were used to synthesize poly(amic acid)s to be converted into polyimide wet gels through chemical imidization. To reduce the dimensional shrinkage of the wet gels during drying process, overcome disadvantages of these materials, such as large associated from their poor mechanical properties, we prepared hybrid aerogels by combination of polymeric and inorganic materials. The pore size, morphology and surface area of aerogels were investigated by SEM, TEM and BET measurements. We also attempted these materials to be applied for energetic or electronic applications. |
