Tailoring structures and performance of polyamide thin film composite (PA-TFC) desalination membranes via sublayers adjustment-a review

Desalination ◽  
2017 ◽  
Vol 417 ◽  
pp. 19-35 ◽  
Author(s):  
Guo-Rong Xu ◽  
Jian-Mei Xu ◽  
Hou-Jun Feng ◽  
He-Li Zhao ◽  
Shui-Bo Wu
Keyword(s):  
Thin Film ◽  
Film Composite ◽  
Thin Film Composite ◽  
And Performance

Computational Modeling and Design of Adaptive Thin-Film Composite Coatings

2006 ◽  
Vol 977 ◽  
Author(s):  
James Deon Pearson ◽  
Mohammed A. Zikry ◽  
Omid Rezvanian
Keyword(s):  
Thin Film ◽  
Composite Coatings ◽  
High Strength ◽  
Film Coating ◽  
Boundary Structure ◽  
Film Composite ◽  
Thin Film Composite ◽  
Grain Boundary Structure ◽  
Transfer Films ◽  
And Performance

AbstractThe tailoring of thin film coatings comprised of high strength constituents, such as diamond like carbon and partially stabilized zirconia and ductile constituents, such as gold and molybdenum is investigated by new microstructurally-based finite-element techniques for applications related to the wear, durability, and performance of these coatings over a broad range of temperatures and loading conditions. The effects of contact transfer films, grain-shape sizes and distributions, grain-boundary structure and sliding, texture, and strength are used to determine the optimal thin film coating compositions. Comparisons are made with experimental measurements and observations, and guidelines for optimal thin film composite coatings are proposed.

Effect of the manufacturing conditions on the structure and performance of thin-film composite membranes

2012 ◽  
Vol 125 (5) ◽  
pp. 3755-3769 ◽  
Author(s):  
Rui-Xin Zhang ◽  
Johan Vanneste ◽  
Lore Poelmans ◽  
Arcadio Sotto ◽  
Xiao-Lin Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite ◽  
And Performance

scholarly journals Effect of the Formation of Ultrathin Selective Layers on the Structure and Performance of Thin-Film Composite Chitosan/PAN Membranes for Pervaporation Dehydration

Membranes ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 153 ◽  
Author(s):  
Mariia Dmitrenko ◽  
Andrey Zolotarev ◽  
Tatiana Plisko ◽  
Katsiaryna Burts ◽  
Vladislav Liamin ◽  
...  
Keyword(s):  
Thin Film ◽  
Optimal Transport ◽  
Interfacial Polymerization ◽  
Contact Angles ◽  
Layer By Layer ◽  
Water Contact ◽  
Selective Layer ◽  
Film Composite ◽  
Thin Film Composite ◽  
And Performance

The aim of the study is to improve the performance of thin-film composite (TFC) membranes with a thin selective layer based on chitosan (CS) via different approaches by: (1) varying the concentration of the CS solution; (2) changing the porosity of substrates from polyacrylonitrile (PAN); (3) deposition of the additional ultrathin layers on the surface of the selective CS layer using interfacial polymerization and layer-by-layer assembly. The developed membranes were characterized by different methods of analyses (SEM and AFM, IR spectroscopy, measuring of water contact angles and porosity). The transport characteristics of the developed TFC membranes were studied in pervaporation separation of isopropanol/water mixtures. It was found that the application of the most porous PAN-4 substrate with combination of formation of an additional polyamide selective layer by interfacial polymerization on the surface of a dense selective CS layer with the subsequent layer-by-layer deposition of five bilayers of poly (sodium 4-styrenesulfonate)/CS polyelectrolyte pair led to the significant improvement of permeance and high selectivity for the entire concentration feed range. Thus, for TFC membrane on the PAN-4 substrate the optimal transport characteristics in pervaporation dehydration of isopropanol (12–90 wt.% water) were achieved: 0.22–1.30 kg/(m2h), 99.9 wt.% water in the permeate.

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