In recent years, amphiphilic block copolymers have attracted great interest for their ability to self-assemble, which allows them to form various bottom-up nanostructured materials. Here we report the fabrication of a nano-structured membrane from sequential spray deposition of cationic and anionic di-block copolymer nanoparticles. Reversible Addition Fragmentation Chain Transfer (RAFT) aqueous emulsion polymerisation method was used to synthesis the cationic and anionic diblock copolymer nanoparticles via polymerisation induced self-assembly (PISA). The thin film membrane was then prepared by sequential deposition of these oppositely charged nanoparticles using spray coating. The prepared nanoparticles and the resulting membranes were fully characterised using microscopy methods (TEM, SEM and AFM), dynamic light scattering (DLS) and filtration tests using pure water and salt solution.

中文翻译：

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通过连续喷雾沉积聚合物 PISA 纳米粒子制备膜

近年来，两亲性嵌段共聚物因其自组装能力而引起了极大的兴趣，这使它们能够形成各种自下而上的纳米结构材料。在这里，我们报告了通过阳离子和阴离子二嵌段共聚物纳米颗粒的顺序喷雾沉积制造纳米结构膜。可逆加成断裂链转移 (RAFT) 水乳液聚合方法用于通过聚合诱导自组装 (PISA) 合成阳离子和阴离子二嵌段共聚物纳米颗粒。然后通过使用喷涂连续沉积这些带相反电荷的纳米粒子来制备薄膜膜。使用显微镜方法（TEM、SEM 和 AFM）对制备的纳米颗粒和所得膜进行了充分表征，