Preparation of High-performance Thin Film Composite Nanofiltration Membranes Based on Reversible Reaction-regulated Interfacial Polymerization of Aldolized Dextran with Piperazine

Yu-hao Chen; Hong-bin Zhang; Teng-fang Zhang; Bao-sheng Ge; Hai-xiang Sun

doi:10.11777/j.issn1000-3304.2025.25060

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Preparation of High-performance Thin Film Composite Nanofiltration Membranes Based on Reversible Reaction-regulated Interfacial Polymerization of Aldolized Dextran with Piperazine

更新时间：2025-07-07

- Preparation of High-performance Thin Film Composite Nanofiltration Membranes Based on Reversible Reaction-regulated Interfacial Polymerization of Aldolized Dextran with Piperazine
- Acta Polymerica Sinica Pages: 1-10(2025)
- 作者机构：
  
  1.中国石油大学(华东)，重质油国家重点实验室，青岛 266580
  2.中国石油大学(华东)，材料科学与工程学院，青岛 266580
- 作者简介：
  
  Bao-sheng Ge, E-mail: gebaosheng@upc.edu.cn
  Hai-xiang Sun, E-mail: sunhaixiang@upc.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25060
  CLC：
- CSTR：32057.14.GFZXB.2025.7435
- Received：11 May 2025，
  
  Published Online：07 July 2025，
- 稿件说明：
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陈宇昊, 章洪斌, 张腾方, 葛保胜, 孙海翔. 基于醛基化葡聚糖与哌嗪的可逆反应调控界面聚合制备高性能复合纳滤膜. 高分子学报, doi: 10.11777/j.issn1000-3304.2025.25060

Chen, Y. H.; Zhang, H. B.; Zhang, T. F.; Ge, B. S.; Sun, H. X. Preparation of high-performance thin film composite nanofiltration membranes based on reversible reaction-regulated interfacial polymerization of aldolized dextran with piperazine. Acta Polymerica Sinica, doi: 10.11777/j.issn1000-3304.2025.25060
陈宇昊, 章洪斌, 张腾方, 葛保胜, 孙海翔. 基于醛基化葡聚糖与哌嗪的可逆反应调控界面聚合制备高性能复合纳滤膜. 高分子学报, doi: 10.11777/j.issn1000-3304.2025.25060 DOI： CSTR： 32057.14.GFZXB.2025.7435.

Chen, Y. H.; Zhang, H. B.; Zhang, T. F.; Ge, B. S.; Sun, H. X. Preparation of high-performance thin film composite nanofiltration membranes based on reversible reaction-regulated interfacial polymerization of aldolized dextran with piperazine. Acta Polymerica Sinica, doi: 10.11777/j.issn1000-3304.2025.25060 DOI： CSTR： 32057.14.GFZXB.2025.7435.

摘要

近年来，基于界面聚合制备的复合纳滤膜由于操作压力低、分离选择性高等优点在水处理领域引起了广泛的关注. 通过调控界面聚合以提升纳滤膜性能也因此成为了人们研究的重点和热点. 为了实现对界面聚合的精确调控以制备高性能的纳滤膜，本研究采用醛基化葡聚糖作为水相添加剂，利用其与水相单体哌嗪之间的烯胺可逆反应实现了对哌嗪随反应的进行而逐步缓慢释放的调节. 结果表明，烯胺可逆反应的调节促使纳滤膜的分离层变薄，有效过滤面积变大，亲水性和电负性增强. 这些性质的改变有效提升了改性后复合纳滤膜的渗透性与选择性，其渗透通量可达2.34×10

-4

L·m

-2

·h

-1

·Pa

-1

，约为原始膜的3倍，并且对硫酸钠的截留率超过99%. 本研究展示了一种新颖的界面聚合调控策略，可为高性能复合纳滤膜的研究提供新的研究思路.

Abstract

In recent years

thin-film composite (TFC) nanofiltration (NF) membranes prepared

via

interfacial polymerization (IP) have attracted considerable attention in the field of water treatment due to the advantages of low operating pressure and separation selectivity. The enhancement of NF membrane performance through the regulation of IP has become the focus and hotspot of research. In order to precisely regulate the IP and prepare high-performance NF membranes

the aldolized dextran was used as an aqueous-phase additive

achieving a gradual and slow release of piperazines with the reaction

via

an enamine reversible reaction in this work. The results showed that the modulation of the enamine reversible reaction contributed to the thinning of the separation layer of the NF membrane

the enlargement of the effective filtration area

and the enhancement of hydrophilicity and electronegativity. These changes in properties led to the enhancement of permeability and selectivity of the modified composite NF membranes

with permeate flux up to 2.34×10

-4

L·m

-2

·h

-1

·Pa

-1

which is about 3 times that of the original membranes

and retention rates of more than 99% for Na

. The present work demonstrates a new strategy for the modulation of IP

which can provide ideas for the development of high-performance composite NF membranes.

关键词

Keywords

references

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