Tailored design of highly permeable polyamide-based nanofiltration membrane via a complex-dissociation regulated interfacial polymerization was written by Hao, Yufan;Yang, Na;Zhang, Longfei;Fang, Yao;Sun, Yongli;Jiang, Bin;Zhang, Luhong. And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2023.Related Products of 4422-95-1 This article mentions the following:
Nanofiltration (NF) that can sep. neutral/charged solutes is considered as a key industrial technol. in water softening and wastewater treatment. However, com. polyamide (PA) NF membranes, with undesirable surface properties and excessive mass transfer resistance, seriously restrict the permeability and are easily attached by pollutants. In this study, a novel CDRIP strategy was proposed to prepare highly permeable polyamide-based NF membranes, in which tannic acid (TA)/Ca(II) complex was in situ formed on substrate surface and then dissociated by sodium citrate (SC) after interfacial polymerization Interestingly, SC can not only adjust surface properties of PA, such as hydrophilicity and surface charge, but also form water-soluble SC/Ca(II) complexes for constructing addnl. transport channels within the separation layer to reduce mass transfer resistance. After the dissociation of TA/Ca(II) complex, TA remained on the membrane surface to further regulate the surface properties of separation layer. The results showed that the PA/TA/Ca(II)-SC NF membrane maintained a high Na2SO4 rejection (98.5%) and a remarkable water permeability of 31.7 L.m-2.h-1.bar-1. The prepared NF membrane exhibits favorable operation stability and anti-fouling ability. Therefore, by employing the CDRIP method, the permeability of NF membrane can be further improved almost without sacrificing the rejection of Na2SO4, which provides a green and efficient strategy for the fabrication of high-performance PA-based NF membranes. In the experiment, the researchers used many compounds, for example, Trimesoylchloride (cas: 4422-95-1Related Products of 4422-95-1).
Trimesoylchloride (cas: 4422-95-1) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Related Products of 4422-95-1
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics