Surfactant effects on polyamide thin-film composite membranes fabricated by co-solvent assisted interfacial polymerization

IF 8.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Desalination Pub Date : 2025-05-17 DOI:10.1016/j.desal.2025.119021

Jeonghoo Sim , Shinyoung Park , Suyeon Ka , Jiwon Heo , Yun Chul Woo

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引用次数: 0

Abstract

The water treatment industry has faced growing challenges due to increasing demand and pollution, emphasizing the need for advanced membrane-based technologies. Reverse osmosis (RO) has gained attention for seawater desalination, drinking water production, and wastewater treatment. However, limited research has been conducted on RO membranes tailored for these applications. In this study, polyamide (PA) thin-film composite RO membranes were fabricated using co-solvent assisted interfacial polymerization (CAIP). m-Phenylenediamine (MPD) and trimesoyl chloride (TMC) were used as monomers, and sodium dodecyl sulfate (SDS) was introduced into the aqueous phase to enhance miscibility between the aqueous and organic phases. The supporting layers were prepared using polysulfone (PSf), NMP, and lithium chloride (LiCl) on non-woven substrates. The effects of SDS on membrane morphology, hydrophilicity, and performance were systematically evaluated. Membranes fabricated via CAIP showed improved surface morphology, higher water flux, and comparable or enhanced salt rejection compared to those made by conventional IP. The optimized membrane with 0.1 wt% SDS achieved up to 95 % salt rejection and high permeability, confirming that SDS addition effectively tuned the membrane structure. These findings demonstrated the potential of CAIP membranes for efficient and sustainable water treatment applications.

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表面活性剂对共溶剂辅助界面聚合制备聚酰胺薄膜复合膜的影响

由于需求和污染的增加，水处理行业面临着越来越多的挑战，强调了对先进膜技术的需求。反渗透技术在海水淡化、饮用水生产和污水处理等领域受到广泛关注。然而，针对这些应用量身定制的反渗透膜的研究有限。本研究采用共溶剂辅助界面聚合（CAIP）法制备了聚酰胺（PA）薄膜复合反渗透膜。以间苯二胺（MPD）和三甲酰氯（TMC）为单体，在水相中引入十二烷基硫酸钠（SDS）以提高水相与有机相的混溶性。采用聚砜（PSf）、NMP和氯化锂（LiCl）在无纺布衬底上制备支撑层。系统评价了SDS对膜形态、亲水性和性能的影响。与传统IP制备的膜相比，通过CAIP制备的膜具有更好的表面形态，更高的水通量和相当或增强的盐抑制作用。当SDS浓度为0.1 wt%时，膜的排盐率可达95%，膜的渗透性高，表明SDS的加入有效地调节了膜的结构。这些发现证明了CAIP膜在高效和可持续的水处理应用中的潜力。

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来源期刊

Desalination 工程技术-工程：化工

CiteScore

14.60

自引率

20.20%

发文量

619

审稿时长

41 days

期刊介绍： Desalination is a scholarly journal that focuses on the field of desalination materials, processes, and associated technologies. It encompasses a wide range of disciplines and aims to publish exceptional papers in this area. The journal invites submissions that explicitly revolve around water desalting and its applications to various sources such as seawater, groundwater, and wastewater. It particularly encourages research on diverse desalination methods including thermal, membrane, sorption, and hybrid processes. By providing a platform for innovative studies, Desalination aims to advance the understanding and development of desalination technologies, promoting sustainable solutions for water scarcity challenges.