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首页> 外文期刊>Desalination: The International Journal on the Science and Technology of Desalting and Water Purification >Study on the thin film composite poly(piperazine-amide) nanofiltration membrane: Impacts of physicochemical properties of substrate on interfacial polymerization formation
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Study on the thin film composite poly(piperazine-amide) nanofiltration membrane: Impacts of physicochemical properties of substrate on interfacial polymerization formation

机译：薄膜复合聚（哌嗪酰胺）纳米滤膜的研究：基质的理化性质对界面聚合形成的影响

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摘要

This work contributes to a better understanding of the correlation between the substrate membrane and the formation of poly(piperazine-amide). Factors affecting the properties of the poly(piperazine-amide) layer of the thin film composite (TFC) nanofiltration membrane were analyzed by studying the variation in the physicochemical properties of the substrates made of three different polymer materials, i.e. polysulfone (PSf), polyethersul-fone (PES) and polyetherimide (PEI). The resulting substrates and TFC membranes were characterized by FESEM, AFM, ATR-IR, XPS and contact angle goniometer. Results revealed that the physicochemical properties of the resulting TFC membranes as well as their separation performances were altered with the use of substrate of different properties. The flux of membrane decreased in the order of PEI-based TFC >PES-based TFC >PES-based TFC, which coincide with the characteristics of each polyamide layer formed over the three different substrates. Compared to PES-based TFC and PEI-based TFC membranes, it is found that the polyamide layer of PSf-based TFC was more compact and more likely cross-linked which as a result led to lower water flux and higher salt rejection as observed in filtration experiments.
机译：这项工作有助于更好地了解底物膜和聚（哌嗪酰胺）的形成之间的关系。通过研究由三种不同的高分子材料（聚砜（PSf），聚醚砜）制成的基材的理化特性变化，分析了影响薄膜复合材料（TFC）纳米过滤膜的聚（哌嗪酰胺）层性能的因素。 -fone（PES）和聚醚酰亚胺（PEI）。通过FESEM，AFM，ATR-IR，XPS和接触角测角仪对所得的底物和TFC膜进行了表征。结果表明，使用不同性质的底物会改变所得TFC膜的理化性质及其分离性能。膜通量按PEI基TFC> PES基TFC> PES基TFC的顺序降低，这与在三种不同基材上形成的每个聚酰胺层的特性一致。与基于PES的TFC和基于PEI的TFC膜相比，发现基于PSf的TFC的聚酰胺层更致密，更可能发生交联，结果导致水通量降低和脱盐率提高。过滤实验。

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