A porous membrane having a porous matrix formed of a thermoplastic polymer material and inorganic filler particles embedded in the porous matrix, the inorganic filler particles having an accessible surface comprising nucleophilic groups bonded to the inorganic filler particles is functionalised by bringing the porous membrane in contact with an aqueous solution comprising a carboxylic acid or an anhydride thereof at a pH between 2 and 3.5 to obtain a carboxylic acid functionalised membrane.
一种多孔膜,其多孔基质由热塑性聚合物材料和嵌入多孔基质中的无机填料颗粒构成,无机填料颗粒具有可触及表面,该表面包含键合在无机填料颗粒上的亲核基团,通过使多孔膜与包含
羧酸或其酸酐的
水溶液接触,在 pH 值介于 2 和 3.5 之间的条件下进行官能化,从而获得
羧酸官能化膜。