Abstract Inkjet printing process enables rapid deposition of inks with precise amount and location. Moreover, the process can be automated and provide control such as repetitive printing of the inks. Utilizing the advantageous features of the inkjet printing process, we demonstrate the synthesis of thin film composite (TFC) flat-sheet membrane for NF application where single walled carbon nanotube (SWCNT) was deposited via an inkjet printing process, acting as an interlayer between the polyamide (PA) selective layer and polyethersulfone (PES) MF membrane support. By controlling the number of SWCNT printings on the PES membrane, we investigated how the SWCNT interlayer thickness influences the formation of PA selective layer. The best membrane performance was achieved from the TFC membrane synthesized using 15 cycles of SWCNT printing, where both high water flux (18.24 ± 0.43 L m−2 h−1 bar−1) and the high Na2SO4 salt rejection (97.88 ± 0.33%) rates were demonstrated. SWCNT interlayer provided highly porous, interconnected structure with uniform pore size distribution which led to the formation of a defect-free ultrathin PA selective layer. Designing of TFC membrane using the SWCNT deposition via inkjet printing is the new approach and successfully demonstrated the significant improvement in the NF membrane performances.

中文翻译：

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喷墨打印的单壁碳纳米管作为高性能薄膜复合纳滤膜的夹层

摘要 喷墨印刷工艺能够以精确的数量和位置快速沉积油墨。此外，该过程可以自动化并提供控制，例如油墨的重复打印。利用喷墨印刷工艺的优势，我们展示了用于 NF 应用的薄膜复合材料 (TFC) 平板膜的合成，其中通过喷墨印刷工艺沉积单壁碳纳米管 (SWCNT)，充当薄膜之间的夹层。聚酰胺 (PA) 选择性层和聚醚砜 (PES) MF 膜支撑。通过控制 PES 膜上的 SWCNT 印刷数量，我们研究了 SWCNT 夹层厚度如何影响 PA 选择性层的形成。使用 15 次 SWCNT 打印循环合成的 TFC 膜获得了最佳的膜性能，其中证明了高水通量 (18.24 ± 0.43 L m-2 h-1 bar-1) 和高 Na2SO4 脱盐率 (97.88 ± 0.33%)。SWCNT 夹层提供了高度多孔、互连的结构，具有均匀的孔径分布，从而形成了无缺陷的超薄 PA 选择性层。通过喷墨打印使用 SWCNT 沉积设计 TFC 膜是一种新方法，并成功证明了 NF 膜性能的显着改善。