Impact of support layer pore size on performance of thin film composite membranes for forward osmosis

2015 ◽  
Vol 483 ◽  
pp. 25-33 ◽  
Author(s):  
Liwei Huang ◽  
Jeffrey R. McCutcheon
Keyword(s):  
Thin Film ◽  
Pore Size ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite

scholarly journals Recent advances in nanomaterial-modified polyamide thin-film composite membranes for forward osmosis processes

2019 ◽  
Vol 584 ◽  
pp. 20-45 ◽  
Author(s):  
Nawshad Akther ◽  
Sherub Phuntsho ◽  
Yuan Chen ◽  
Noreddine Ghaffour ◽  
Ho Kyong Shon
Keyword(s):  
Thin Film ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite ◽  
Recent Advances

Thin-film composite membranes with nanocomposite substrate modified with graphene oxide/TiO2 for forward osmosis process

2017 ◽  
Vol 70 ◽  
pp. 64-78 ◽  
Author(s):  
Fang Li ◽  
Feng Zhao ◽  
Manhong Huang ◽  
Chunyan Ma ◽  
Bo Yang ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite

scholarly journals Polyamide thin-film composite membranes based on carboxylated polysulfone microporous support membranes for forward osmosis

2013 ◽  
Vol 445 ◽  
pp. 220-227 ◽  
Author(s):  
Young Hoon Cho ◽  
Jungim Han ◽  
Sungsoo Han ◽  
Michael D. Guiver ◽  
Ho Bum Park
Keyword(s):  
Thin Film ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite

scholarly journals Towards a High-Flux Separation Layer from Hexagonal Lyotropic Liquid Crystals for Thin-Film Composite Membranes

Membranes ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 842
Author(s):  
Senlin Gu ◽  
Bao Yuan ◽  
Bo Bai ◽  
Xin Tong ◽  
Luke A. O’Dell ◽  
...  
Keyword(s):  
Thin Film ◽  
Liquid Crystals ◽  
Pore Size ◽  
Water Flux ◽  
Composite Membranes ◽  
Lyotropic Liquid Crystals ◽  
Hydrophobic Substrate ◽  
Film Composite ◽  
Thin Film Composite ◽  
Significant Difference

Hexagonal lyotropic liquid crystals (HLLC) with uniform pore size in the range of 1~5 nm are highly sought after as promising active separation layers of thin-film composite (TFC) membranes, which have been confirmed to be efficient for water purification. The potential interaction between an amphiphile-based HLLC layer and the substrate surface, however, has not been fully explored. In this research, hydrophilic and hydrophobic microporous polyvinylidene fluoride (PVDF) substrates were chosen, respectively, to prepare TFC membranes with the active layers templated from HLLC, consisting of dodecyl trimethylammonium bromide, water, and a mixture of poly (ethylene glycol) diacrylate and 2-hydroxyethyl methacrylate. The pore size of the active layer was found to decrease by about 1.6 Å compared to that of the free-standing HLLC after polymerization, but no significant difference was observable by using either hydrophilic or hydrophobic substrates (26.9 Å vs 27.1 Å). The water flux of the TFC membrane with the hydrophobic substrate, however, was higher than that with the hydrophilic one. A further investigation confirmed that the increase in water flux originated from a much higher porosity was due to the synergistic effect of the hydrophilic HLLC nanoporous material and the hydrophobic substrate.

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