Nanofiltration membranes with enhanced performance by constructing an interlayer integrated with dextran nanoparticles and polyethyleneimine coating was written by Chen, Yuhao;Sun, Haixiang;Tang, Sihui;Feng, Huimei;Zhang, Hongbin;Chen, Kuo;Li, Peng;Niu, Q. Jason. And the article was included in Journal of Membrane Science in 2022.Recommanded Product: 4422-95-1 This article mentions the following:
The thin-film composite (TFC) nanofiltration (NF) membrane is a novel kind of membrane that has been extensively studied in recent years and broadly applied in desalination and wastewater treatment. The improvement of separation performance by optimizing the structure and morphol. of NF membranes can significantly reduce energy consumption and bring more economic benefits. In this work, glutaraldehyde (GA) was used to crosslink polyethyleneimine (PEI) and dextran nanoparticles (DNPs) to construct an interfacial coating interlayer on polysulfone (PSF) ultrafiltration (UF) substrate. Subsequently, the polyamide (PA) NF membranes were fabricated by interfacial polymerization (IP) between piperazine (PIP) and trimesoyl chloride (TMC). DNPs were semi-encapsulated in the PEI coating and the exposed nanoparticles would be embedded in the PA layer for forming interfacial channels after IP. The interlayer not only affected the adsorption and diffusion of aqueous phase monomers to form a thin membrane, but also improved the membrane d. to prevent selective defects associated with the incorporation of nanoparticles. The pure water permeance of the interlayered-TFC NF membrane was determined as 313.3 Lm-2h-1MPa-1, which was approx. four-fold that of the pristine membrane. The retention rate of various divalent salts of the NF membrane also significantly improved, and the retention rate of Na2SO4 exceeded 99%. This innovative method of interlayer modification has exhibited great potential in rapid desalination and wastewater recovery, providing new possibilities for the preparation of industrial high-performance NF membranes. In the experiment, the researchers used many compounds, for example, Trimesoylchloride (cas: 4422-95-1Recommanded Product: 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. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Recommanded Product: 4422-95-1
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics