通过接枝聚（甲基丙烯酸3-磺丙酯）刷提高反渗透膜的抗污染性能和通量
Antifouling and Flux Enhancement of Reverse Osmosis Membrane by Grafting Poly (3-Sulfopropyl Methacrylate) Brushes.
作者信息
Mushtaq Reema, Abbas Muhammad Asad, Mushtaq Shehla, Ahmad Nasir M, Khan Niaz Ali, Khan Asad U, Hong Wu, Sadiq Rehan, Jiang Zhongyi
机构信息
Polymer Research Lab, School of Chemical and Material Engineering, NUST, H-12, Islamabad 44000, Pakistan.
Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
出版信息
Membranes (Basel). 2021 Mar 18;11(3):213. doi: 10.3390/membranes11030213.
A commercial thin film composite (TFC) polyamide (PA) reverse osmosis membrane was grafted with 3-sulfopropyl methacrylate potassium (SPMK) to produce PA-g-SPMK by atom transfer radical polymerization (ATRP). The grafting of PA was done at varied concentrations of SPMK, and its effect on the surface composition and morphology was studied by Fourier-Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), optical profilometry, and contact angle analysis. The grafting of hydrophilic ionically charged PSPMK polymer brushes having acrylate and sulfonate groups resulted in enhanced hydrophilicity rendering a reduction of contact angle from 58° of pristine membrane sample labeled as MH0 to 10° for a modified membrane sample labeled as MH3. Due to the increased hydrophilicity, the flux rate rises from 57.1 L m h to 71.2 L m h, and 99% resistance against microbial adhesion ( and ) was obtained for MH3 after modification.
通过原子转移自由基聚合（ATRP）将3-磺丙基甲基丙烯酸酯钾（SPMK）接枝到商用的聚酰胺（PA）复合薄膜（TFC）反渗透膜上，制备了PA-g-SPMK。在不同浓度的SPMK条件下进行PA的接枝，并通过傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）、光学轮廓仪和接触角分析研究其对表面组成和形态的影响。接枝具有丙烯酸酯和磺酸盐基团的亲水性离子化PSPMK聚合物刷，使得亲水性增强，接触角从标记为MH0的原始膜样品的58°降低到标记为MH3的改性膜样品的10°。由于亲水性增加，通量率从57.1 L m h提高到71.2 L m h，改性后的MH3对微生物粘附的抗性达到99%（和）。
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