A lamellar diblock polymer combining a cross-linkable segment with a chemically etchable segment was cross-linked above its order–disorder temperature (T_ODT) to kinetically trap the morphology associated with the fluctuating disordered state. After removal of the etchable block, evaluation of the resulting porous thermoset allows for an unprecedented experimental characterization of the trapped disordered phase. Through a combination of small-angle X-ray scattering, nitrogen sorption, scanning electron microscopy, and electron tomography experiments we demonstrate that the nanoporous structure exhibits a narrow pore size distribution and a high surface to volume ratio and is bicontinuous over a large sample area. Together with the processability of the polymeric starting material, the proposed system combines attractive attributes for many advanced applications. In particular, it was used to design new composite membranes for the ultrafiltration of water.

中文翻译：

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纳米多孔热固性材料，其具有由化学固定在有序-无序过渡之上的嵌段聚合物形成的渗流孔

层状二嵌段聚合物将可交联链段与可化学蚀刻链段结合在一起，在高于其有序温度（T _ODT）的条件下进行了交联。）以动态捕获与波动无序状态相关的形态。在去除可蚀刻块之后，对所得多孔热固性材料的评估可以对捕获的无序相进行前所未有的实验表征。通过小角度X射线散射，氮吸附，扫描电子显微镜和电子断层扫描实验的结合，我们证明了纳米孔结构展现出狭窄的孔径分布和高的表面体积比，并且在大样品区域上是双连续的。与聚合物起始材料的可加工性一起，所提出的系统结合了许多高级应用的吸引人的特性。特别是，它被用于设计用于水超滤的新型复合膜。