Highly Permeable Reverse Osmosis Membranes via Molecular Layer-by-Layer Deposition of Trimesoyl Chloride and 3,5-Diaminobenzoic Acid,ACS Applied Polymer Materials

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Highly Permeable Reverse Osmosis Membranes via Molecular Layer-by-Layer Deposition of Trimesoyl Chloride and 3,5-Diaminobenzoic Acid
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-12-17 , DOI: 10.1021/acsapm.0c01199
William D Mulhearn ₁ , Christopher M Stafford ₁

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We present a series of polyamide membranes synthesized via molecular layer-by-layer (mLbL) deposition of trimesoyl chloride (TMC) and 3,5-diaminobenzoic acid (BA). These membranes exhibit superior NaCl rejection compared to previously reported TMC–BA membranes prepared via interfacial polymerization with the improved performance of the mLbL films attributable to higher cross-link density facilitated by the stepwise deposition process in good solvents. We compare the TMC–BA series with membranes synthesized from TMC and m-phenylenediamine (MPD), a conventional reverse osmosis membrane chemistry. At the minimum thickness capable of 90% NaCl rejection, mLbL TMC–BA membranes exhibit 50% greater water permeance than mLbL TMC–MPD.

中文翻译：

均苯三甲酰氯和 3,5-二氨基苯甲酸的分子逐层沉积高渗透反渗透膜

我们展示了一系列聚酰胺膜，这些聚酰胺膜是通过均苯三甲酰氯 (TMC) 和 3,5-二氨基苯甲酸 (BA) 的分子逐层 (mLbL) 沉积合成的。与之前报道的通过界面聚合制备的 TMC-BA 膜相比，这些膜表现出更高的 NaCl 排斥率，mLbL 膜的性能得到改善，这归因于良好溶剂中的逐步沉积过程促进了更高的交联密度。我们将 TMC–BA 系列与由 TMC 和间苯二胺 (MPD) 合成的膜进行比较，这是一种传统的反渗透膜化学。在能够截留 90% NaCl 的最小厚度下，mLbL TMC–BA 膜表现出比 mLbL TMC–MPD 高 50% 的透水性。

更新日期：2021-01-08

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