Membrane Science and Technology

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Preparation and performance study of high performance polyester nanofiltration membrane based on 4-methylcatechol

Authors： WANG Ding1, YANG Baojun1, WANG Bainian1, ZHOU Ayang2,3

Units： 1. School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230001, China;
2. School of Materials and Chemical Engineering, Chuzhou University, Chuzhou 239000， China;
3. Anhui Provincial Engineering Research Center for High-Performance Ceramic Separation
Membranes for Water Treatment, Chuzhou 239000, China

KeyWords： polyphenols; interfacial polymerization; nanofiltration membranes; solvent resistance;4-methylcatechol

ClassificationCode：TQ316.4+3

year,volume(issue):pagination： 2026, 46(3):89-99

Abstract：

Polyester composite nanofiltration membranes have received widespread attention due to their stability in organic solvents. The interface polymerization method is commonly used to prepare polyester composite films, and the role of polyphenols as monomers in this polymerization reaction is crucial. This article investigated three types of polyphenols: catechol (CA), 4-methylcatechol (MECA), and 4-tert-butyl-catechol（TECA）. They are used as aqueous monomers to react with trimethoyl chloride (TMC) to prepare solvent resistant composite polyester membranes. The prepared membrane was first used to separate the aqueous solution of Brilliant Blue R-250 (BB, 854 Da), and its swelling degree was tested in different organic solvents. Among these threemembranes, MECA-TMC exhibited good separation performance and low swelling degree, therefore, for subsequent research, the prepared membrane NF-MECA had good solvent resistance in tetrahydrofuran, with a retention rate of 98% for BB in a 36 hour experiment and a permeance of 34 L/( m2·h·MPa).

Funds：

安徽省科技攻坚计划重点项目（202423i08050001）

AuthorIntro：

第一作者简介：王丁（2002-），男，安徽蚌埠人，硕士研究生，主要研究方向为膜分离.*通讯作者，E-mail：zhouayang@foxmail.com

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