Thermoresponsive antifouling ultrafiltration membranes from mesophase templating
Thermoresponsive antifouling ultrafiltration membranes from mesophase templating
复制标题
中间相模板法制备温敏超滤膜
DOI：
10.1016/j.memsci.2023.121861
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发表时间：
2023-06-27
影响因子：
9.5
通讯作者：
Foudazi, Reza
中科院分区：
文献类型：
--
作者：
Saadat, Younes;Tabatabaei, Seyed Mostafa;Foudazi, Reza
由正六边形（H1）结构的溶致液晶（LLC）模板合成的纳米聚合物具有3d连续传输路径，这使其成为膜分离应用的理想选择。在这种有序的结构中加入额外的功能，特别是刺激响应，提供了更多的应用机会。在这项工作中，我们首次通过LLC模板成功合成了h1结构的热响应超滤（UF）膜。该膜含有热响应性Pluronic P84 diacrylate (P84DA)，它不仅作为单体和结构导向两亲体，而且使孔径随温度变化。实验研究表明，温度的变化可以改变h - 1模板化聚合物的溶胀能力以及膜的渗透性和选择性。温度从25℃升高到45℃，归一化通量从28 L m- 2 h-1增加到68 L m- 1；分子量临界值（MWCO）为2200 ~ 3900 Da。此外，该膜对不同的溶质具有优异的抗污染性能。
Nanostructured polymers synthesized by lyotropic liquid crystal (LLC) templates with normal hexagonal (H1) structure exhibit a 3D-continuous transport path, which makes them ideal for membrane separation application. Incorporating additional functionality, especially stimuli-responsiveness, in such an ordered structure provides even more application opportunities. In this work, we present the first successful synthesis of H1-structured thermoresponsive ultrafiltration (UF) membranes via LLC templating. The membrane contains thermoresponsive Pluronic P84 diacrylate (P84DA) which not only acts as the monomer and structure-directing amphiphile, but also enables the pore size change with temperature. Experimental studies reveal that the swelling capacity of H1templated polymer as well as permeability and selectivity of the obtained membrane can be altered by changing the temperature. Increasing the temperature from 25 to 45 degrees C increases the normalized flux from 28 to 68 L m- 2 h-1 & mu;m and molecular weight cut-off (MWCO) from 2200 to 3900 Da. Furthermore, the membrane shows an outstanding fouling resistance against different solutes.