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Smart Nylon Membranes with pH‐Responsive Wettability: High‐Efficiency Separation on Demand for Various Oil/Water Mixtures and Surfactant‐Stabilized Emulsions
Advanced Materials Interfaces ( IF 5.4 ) Pub Date : 2018-09-19 , DOI: 10.1002/admi.201801179
Xiangyu Li 1 , Qingdong Zhang 1 , Weifeng Zhang 1 , Ruixiang Qu 1 , Yen Wei 1 , Lin Feng 1
Affiliation  

Water contaminated with various oils has become one of the most pervasive environmental issues. Developing an efficient and durable separation membrane is of significance but challenging due to the critical limitations of nonuniversality and discontinuity for oil/water separation. Herein, a material is presented by combining the porous nylon membrane with self‐assembled thiol molecules, exhibiting tunable wettability property upon the pH variation. Such a smart membrane shows high hydrophobicity in nonbasic environment while transition into superhydrophilicity under basic condition, demonstrating a robust and controllable separation performance for various oil/water mixtures and surfactant‐stabilized emulsions along with excellent recyclability of the long‐term separation. This facile and general strategy suggests encouraging the development of the next generation of energy‐saving water treatment systems, applying to intelligent separation and on‐demand oil‐spills cleanup.

中文翻译:

具有可响应pH值的可湿性的智能尼龙膜:可根据需要对各种油/水混合物和表面活性剂稳定的乳液进行高效分离

被各种油脂污染的水已成为最普遍的环境问题之一。开发高效耐用的分离膜具有重要意义,但由于油/水分离的非通用性和不连续性的严格限制而具有挑战性。在此,通过将多孔尼龙膜与自组装的硫醇分子结合在一起,提出了一种材料,该材料在pH值变化时具有可调节的润湿性。这种智能膜在非碱性环境中显示出高疏水性,而在碱性条件下转变为超亲水性,证明了对各种油/水混合物和表面活性剂稳定的乳液的稳健和可控的分离性能,以及长期分离的出色可回收性。
更新日期:2018-09-19
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