State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering , Tianjin Polytechnic University , Tianjin 300387 , PR China.
Department of Chemical Engineering , Hiroshima University , Higashi-Hiroshima 739-8527 , Japan.
ACS Appl Mater Interfaces. 2018 Apr 25;10(16):14070-14078. doi: 10.1021/acsami.7b19075. Epub 2018 Apr 12.
The fabrication of a continuous and uniform organosilica membrane on a porous polymer substrate was achieved via a facile and technologically scalable flow-induced deposition (FD) approach. The uniformity of the thickness of an organosilica separation layer on a polymer surface with a large area was improved significantly via this two-step FD approach. Meanwhile, the optimal concentration of the organosilica used in membrane preparation was also investigated. This polymer-supported organosilica layered-hybrid membrane showed a high level of NaCl rejection (97.5-99%) in the reverse osmosis desalination of a 2000 ppm NaCl solution at an operating pressure of 3 MPa. This membrane also exhibited good stability and flexibility when rolled into a curvature radius of 11 mm.
通过一种简单且具有技术扩展性的流致沉积（FD）方法，在多孔聚合物基底上制备了连续且均匀的有机硅膜。通过两步 FD 方法，显著提高了大面积聚合物表面上有机硅分离层厚度的均匀性。同时，还研究了膜制备中有机硅的最佳浓度。这种聚合物支撑的有机硅层状杂化膜在操作压力为 3 MPa 时，对 2000 ppm NaCl 溶液的反渗透脱盐表现出高的 NaCl 截留率（97.5-99%）。当膜被卷成曲率半径为 11 毫米时，该膜还表现出良好的稳定性和柔韧性。
