膜科学与技术

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Preparation and properties of 2,2'-biphenol based polyarylester loose nanofiltration membrane

Authors： CHANG Guoliang, GONG Genghao

Units： State Key Laboratory of Membrane Separation and Membrane Process, College of Materials Science and Engineering, Tiangong University, Tianjin 300387, China

KeyWords： 2,2'-biphenol; loose nanofiltration; polyarylate composite membrane; dye rejection; desalination

ClassificationCode：

year,volume(issue):pagination： 2023,43(1):74-82

Abstract：

A high-flux loose nanofiltration (LNF) membrane was fabricated by synthesizing 6,6'-OH-2,2'-BIPOL with a non-planar configuration as aqueous phase monomer to react with trimesoyl chloride (TMC) via interfacial polymerization on a polyacrylonitrile (PAN) ultrafiltration membrane. The separation layer of 2,2'-biphenol-based polyarylate (hydroxyl-BIPOL/TMC) possessed a loose structure due to its unique non-planar configuration. The effect of interfacial polymerization time on the morphology and the separation performance of this hydroxyl-BIPOL/PAN composite membrane was investigated. The hydroxyl-BIPOL/PAN-5 composite membrane exhibited high pure water permeation flux of 62.9 L m-2 h-1 bar-1 and excellent sieving performance for salts/dyes (the rejections of BB26 dye and MgSO4 were 99.7% and 16.9%, respectively). It is confirmed that 2,2'-biphenol-based derivatives are suitable for the preparation of the LNF membranes with a high permselectivity, which expands the design ideas of prepolymer monomers for the preparation of next-generation high-performance thin-film composite LNF membranes.

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AuthorIntro：

常国梁（1993-），男，河北张家口人，硕士生，研究方向为先进膜材料、膜分离技术，E-mail：cgl92411@163.com.

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