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Nanocomposite desalination membranes made of aromatic polyamide with cellulose nanofibers: synthesis, performance, and water diffusion study.
Nanoscale ( IF 5.8 ) Pub Date : 2020-07-06 , DOI: 10.1039/d0nr02915g Rodolfo Cruz-Silva 1 , Kazuo Izu , Jun Maeda , Shigeru Saito , Aaron Morelos-Gomez , Celia Aguilar , Yoshihiro Takizawa , Ayaka Yamanaka , Syogo Tejiima , Kazunori Fujisawa , Kenji Takeuchi , Takuya Hayashi , Toru Noguchi , Akira Isogai , Morinobu Endo
Nanoscale ( IF 5.8 ) Pub Date : 2020-07-06 , DOI: 10.1039/d0nr02915g Rodolfo Cruz-Silva 1 , Kazuo Izu , Jun Maeda , Shigeru Saito , Aaron Morelos-Gomez , Celia Aguilar , Yoshihiro Takizawa , Ayaka Yamanaka , Syogo Tejiima , Kazunori Fujisawa , Kenji Takeuchi , Takuya Hayashi , Toru Noguchi , Akira Isogai , Morinobu Endo
Affiliation
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Reverse osmosis membranes of aromatic polyamide (PA) reinforced with a crystalline cellulose nanofiber (CNF) were synthesized and their desalination performance was studied. Comparison with plain PA membranes shows that the addition of CNF reduced the matrix mobility resulting in a molecularly stiffer membrane because of the attractive forces between the surface of the CNFs and the PA matrix. Fourier transform-infrared spectroscopy and X-ray photoelectron spectroscopy results showed complex formation between the carboxy groups of the CNF surface and the m- phenylenediamine monomer in the CNF-PA composite. Molecular dynamics simulations showed that the CNF-PA had higher hydrophilicity which was key for the higher water permeability of the synthesized nanocomposite membrane. The CNF-PA reverse osmosis nanocomposite membranes also showed enhanced antifouling performance and improved chlorine resistance. Therefore, CNF shows great potential as a nanoreinforcing material towards the preparation of nanocomposite aromatic PA membranes with longer operation lifetime due to its antifouling and chlorine resistance properties.
中文翻译：
由芳族聚酰胺与纤维素纳米纤维制成的纳米复合淡化膜：合成，性能和水扩散研究。
合成了用结晶纤维素纳米纤维（CNF）增强的芳族聚酰胺（PA）的反渗透膜，并对其脱盐性能进行了研究。与普通PA膜的比较表明，由于CNF表面和PA基质之间的吸引力，CNF的添加降低了基质的迁移率，从而导致了分子更坚硬的膜。傅里叶变换红外光谱和X射线光电子能谱结果表明CNF表面的羧基与m-CNF-PA复合物中的苯二胺单体。分子动力学模拟表明，CNF-PA具有较高的亲水性，这对于合成的纳米复合膜的高透水性至关重要。CNF-PA反渗透纳米复合膜还显示出增强的防污性能和改善的耐氯性。因此，由于其具有防污和耐氯的特性，CNF作为制备纳米复合芳族PA膜的纳米增强材料具有巨大的潜力，该膜具有更长的使用寿命。
更新日期：2020-07-06
中文翻译：
由芳族聚酰胺与纤维素纳米纤维制成的纳米复合淡化膜：合成，性能和水扩散研究。
合成了用结晶纤维素纳米纤维（CNF）增强的芳族聚酰胺（PA）的反渗透膜，并对其脱盐性能进行了研究。与普通PA膜的比较表明，由于CNF表面和PA基质之间的吸引力，CNF的添加降低了基质的迁移率，从而导致了分子更坚硬的膜。傅里叶变换红外光谱和X射线光电子能谱结果表明CNF表面的羧基与m-CNF-PA复合物中的苯二胺单体。分子动力学模拟表明，CNF-PA具有较高的亲水性，这对于合成的纳米复合膜的高透水性至关重要。CNF-PA反渗透纳米复合膜还显示出增强的防污性能和改善的耐氯性。因此，由于其具有防污和耐氯的特性，CNF作为制备纳米复合芳族PA膜的纳米增强材料具有巨大的潜力，该膜具有更长的使用寿命。
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