申请人:International Business Machines Corporation
公开号:US10767013B2
公开(公告)日:2020-09-08
Methods of forming nanoporous materials are described herein that include forming a polymer network with a chemically removable portion. The chemically removable portion may be polycarbonate polymer that is removable on application of heat or exposure to a base, or a polyhexahydrotriazine (PHT) or polyhemiaminal (PHA) polymer that is removable on exposure to an acid. The method generally includes forming a reaction mixture comprising a formaldehyde, a solvent, a primary aromatic diamine, and a diamine having a primary amino group and a secondary amino group, the secondary amino group having a base-reactive substituent, and heating the reaction mixture to a temperature of between about 50 deg C. and about 150 deg C. to form a polymer. Removing any portion of the polymer results in formation of nanoscopic pores as polymer chains are decomposed, leaving pores in the polymer matrix.
本文描述了形成纳米多孔材料的方法,包括形成具有化学可去除部分的聚合物网络。化学可去除部分可以是在加热或接触碱时可去除的聚碳酸酯聚合物,或在接触酸时可去除的聚六氢三嗪(PHT)或聚芳香族胺(PHA)聚合物。该方法一般包括形成一种反应混合物,该混合物包括甲醛、溶剂、芳香族伯胺和具有伯氨基和仲氨基(仲氨基具有碱反应取代基)的二胺,并将反应混合物加热到约 50 摄氏度至约 150 摄氏度的温度,以形成聚合物。移除聚合物的任何部分都会导致纳米孔隙的形成,因为聚合物链会分解,在聚合物基质中留下孔隙。