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首页> 外文OA文献 >Preparation, characterization and performance of poly(m-phenylene isophthalamide)/organically modified montmorillonite nanocomposite membranes in removal of perfluorooctane sulfonate
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Preparation, characterization and performance of poly(m-phenylene isophthalamide)/organically modified montmorillonite nanocomposite membranes in removal of perfluorooctane sulfonate

机译：聚（间亚苯基间苯二甲酰胺）/有机改性蒙脱土纳米复合膜的制备，表征及去除全氟辛烷磺酸盐的性能

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摘要

Nanocomposite membranes containing poly(m-phenylene isophthalamide) (PMIA) and organically modified montmorillonite (OMMT) were prepared by a combination of solution dispersion and wet -phase inversion methods, and the effects of OMMT addition on the properties and performance of fabricated nanofiltration membranes were investigated. The membranes were characterized by contact angle measurements, scanning electron microscopy (SEM), atomic force microscopy (AFM), thermogravimetric analysis, and zeta potential. The performance of the membranes was elucidated by the removal of perfluorooctane sulfonate (PFOS) at neutral pH. Increasing OMMT concentration improved the thermal stability and hydrophilicity of the membranes. The permeation and rejection of PFOS were significantly improved. The performance of fabricated nanofiltration membranes in removal of PFOS varied depending on the solute and membrane properties as well as solution conditions. Finally, a comparison between fabricated membranes and a commercial NF membrane (ESNA1-K1, Hydecanme) proved that the OMMT addition is a convenient procedure for producing nanocomposite membranes with superior properties and performance. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
机译：通过溶液分散和湿相转化相结合的方法，制备了含聚间苯二甲酰间苯二甲酰胺（PMIA）和有机改性蒙脱土（OMMT）的纳米复合膜，以及OMMT的添加对制备的纳滤膜性能和性能的影响。被调查了。通过接触角测量，扫描电子显微镜（SEM），原子力显微镜（AFM），热重分析和ζ电势表征膜。通过在中性pH下去除全氟辛烷磺酸盐（PFOS）来阐明膜的性能。 OMMT浓度的增加改善了膜的热稳定性和亲水性。全氟辛烷磺酸的渗透和排阻得到显着改善。制备的纳滤膜在去除PFOS方面的性能随溶质和膜特性以及​​溶液条件的不同而变化。最后，将人造膜与商用NF膜（ESNA1-K1，Hydecanme）进行比较，证明添加OMMT是生产具有优异性能和性能的纳米复合膜的便捷方法。 （C）2016中国科学院生态环境研究中心。由Elsevier B.V.发布

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