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Polyamide Thin Films Grown on PD/SWCNT-Interlayered-PTFE Microfiltration Membranes for High-Permeance Organic Solvent Nanofiltration
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-12-15 , DOI: 10.1021/acs.iecr.0c04969 Yang Lu 1 , Zhenyi Wang 1 , Wangxi Fang 1 , Yuzhang Zhu 1 , Yatao Zhang 2 , Jian Jin 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-12-15 , DOI: 10.1021/acs.iecr.0c04969 Yang Lu 1 , Zhenyi Wang 1 , Wangxi Fang 1 , Yuzhang Zhu 1 , Yatao Zhang 2 , Jian Jin 1
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Porous polymeric support membranes with outstanding organic solvent resistance are highly required for fabricating thin-film composite (TFC) organic solvent nanofiltration (OSN) membranes. In this work, we report the fabrication of a high-permeance TFC-OSN membrane by the use of a polytetrafluoroethylene (PTFE) microfiltration membrane loaded with single-walled carbon nanotubes coated by a polydopamine (PD/SWCNT) network film (named the PD/SWCNT/PTFE composite membrane) as the support. Through interfacial polymerization between m-phenylenediamine and trimesoyl chloride, a polyamide (PA) thin film has successfully grown on the surface of the PD/SWCNT/PTFE composite membrane. The resulting PA TFC-OSN membrane exhibits a high methanol permeance up to 13.2 L m–2 h–1 bar–1 with a rejection rate of 89.6% to 6-hydroxy-2-naphthalenesulfonic acid sodium salt (HNSA, Mw = 246.21). Moreover, the rejection rates of the PA TFC-OSN membrane to various dyes remain unchanged before and after DMF activation, indicating that it possesses an excellent resistance to organic solvents.
中文翻译：
在PD / SWCNT层间PTFE微滤膜上生长的聚酰胺薄膜，用于高渗透性有机溶剂纳滤
制造薄膜复合材料（TFC）有机溶剂纳米过滤（OSN）膜非常需要具有出色的耐有机溶剂性的多孔聚合物支撑膜。在这项工作中，我们报告了通过使用载有单壁碳纳米管的聚四氟乙烯（PTFE）微滤膜制备高渗透性TFC-OSN膜的方法，该单壁碳纳米管由聚多巴胺（PD / SWCNT）网络膜（称为PD）涂覆/ SWCNT / PTFE复合膜）作为支撑。通过间苯二胺和均苯三甲酰氯之间的界面聚合，聚酰胺（PA）薄膜已成功地在PD / SWCNT / PTFE复合膜的表面上生长。所得的PA TFC-OSN膜表现出高达13.2 L m –2 h –1 bar –1的高甲醇渗透率对6-羟基-2-萘磺酸钠盐（HNSA，M w = 246.21）的排斥率为89.6 。此外，PA TFC-OSN膜对各种染料的排斥率在DMF活化之前和之后保持不变，这表明它对有机溶剂具有出色的抵抗力。
更新日期：2020-12-30
中文翻译：
在PD / SWCNT层间PTFE微滤膜上生长的聚酰胺薄膜，用于高渗透性有机溶剂纳滤
制造薄膜复合材料（TFC）有机溶剂纳米过滤（OSN）膜非常需要具有出色的耐有机溶剂性的多孔聚合物支撑膜。在这项工作中，我们报告了通过使用载有单壁碳纳米管的聚四氟乙烯（PTFE）微滤膜制备高渗透性TFC-OSN膜的方法，该单壁碳纳米管由聚多巴胺（PD / SWCNT）网络膜（称为PD）涂覆/ SWCNT / PTFE复合膜）作为支撑。通过间苯二胺和均苯三甲酰氯之间的界面聚合，聚酰胺（PA）薄膜已成功地在PD / SWCNT / PTFE复合膜的表面上生长。所得的PA TFC-OSN膜表现出高达13.2 L m –2 h –1 bar –1的高甲醇渗透率对6-羟基-2-萘磺酸钠盐（HNSA，M w = 246.21）的排斥率为89.6 。此外，PA TFC-OSN膜对各种染料的排斥率在DMF活化之前和之后保持不变，这表明它对有机溶剂具有出色的抵抗力。
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