Electrospun nanofiber supports with bio-inspired modification enabled high-performance forward osmosis composite membranes

2020 ◽  
Vol 22 ◽  
pp. 100473
Author(s):  
Lijun Meng ◽  
Feihu Niu ◽  
Peiji Deng ◽  
Ning Li ◽  
Yan Lv ◽  
...  
Keyword(s):  
High Performance ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Electrospun Nanofiber

Hydrophilic polyvinyl alcohol coating on hydrophobic electrospun nanofiber membrane for high performance thin film composite forward osmosis membrane

Desalination ◽  
2018 ◽  
Vol 426 ◽  
pp. 50-59 ◽  
Author(s):  
Myoung Jun Park ◽  
Ralph Rolly Gonzales ◽  
Ahmed Abdel-Wahab ◽  
Sherub Phuntsho ◽  
Ho Kyong Shon
Keyword(s):  
Thin Film ◽  
Polyvinyl Alcohol ◽  
High Performance ◽  
Forward Osmosis ◽  
Electrospun Nanofiber ◽  
Nanofiber Membrane ◽  
Film Composite ◽  
Thin Film Composite

scholarly journals Modification of Nanofiber Support Layer for Thin Film Composite forward Osmosis Membranes via Layer-by-Layer Polyelectrolyte Deposition

Membranes ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 70 ◽  
Author(s):  
Ralph Gonzales ◽  
Myoung Park ◽  
Leonard Tijing ◽  
Dong Han ◽  
Sherub Phuntsho ◽  
...  
Keyword(s):  
Thin Film ◽  
High Performance ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Structural Parameter ◽  
Layer By Layer ◽  
Film Composite ◽  
Thin Film Composite ◽  
Layer Deposition ◽  
Tfc Membrane

Electrospun nanofiber-supported thin film composite membranes are among the most promising membranes for seawater desalination via forward osmosis. In this study, a high-performance electrospun polyvinylidenefluoride (PVDF) nanofiber-supported thin film composite (TFC) membrane was successfully fabricated after molecular layer-by-layer polyelectrolyte deposition. Negatively-charged electrospun polyacrylic acid (PAA) nanofibers were deposited on electrospun PVDF nanofibers to form a support layer consisted of PVDF and PAA nanofibers. This resulted to a more hydrophilic support compared to the plain PVDF nanofiber support. The PVDF-PAA nanofiber support then underwent a layer-by-layer deposition of polyethylenimine (PEI) and PAA to form a polyelectrolyte layer on the nanofiber surface prior to interfacial polymerization, which forms the selective polyamide layer of TFC membranes. The resultant PVDF-LbL TFC membrane exhibited enhanced hydrophilicity and porosity, without sacrificing mechanical strength. As a result, it showed high pure water permeability and low structural parameter values of 4.12 L m−2 h−1 bar−1 and 221 µm, respectively, significantly better compared to commercial FO membrane. Layer-by-layer deposition of polyelectrolyte is therefore a useful and practical modification method for fabrication of high performance nanofiber-supported TFC membrane.

scholarly journals Modification of Nanofiber Support Layer for Thin Film Composite Forward Osmosis Membranes via Layer-By-Layer Polyelectrolyte Deposition

2018 ◽  
Author(s):  
Ralph Rolly Gonzales ◽  
Myoung Jun Park ◽  
Leonard Tijing ◽  
Dong Suk Han ◽  
Sherub Phuntsho ◽  
...  
Keyword(s):  
Thin Film ◽  
High Performance ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Structural Parameter ◽  
Layer By Layer ◽  
Film Composite ◽  
Thin Film Composite ◽  
Layer Deposition ◽  
Tfc Membrane

Electrospun nanofiber-supported thin film composite membranes are among the most promising membranes for seawater desalination via forward osmosis. In this study, a high-performance electrospun polyvinylidenefluoride (PVDF) nanofiber-supported TFC membrane was successfully fabricated after molecular layer-by-layer polyelectrolyte deposition. Negatively-charged electrospun polyacrylic acid (PAA) nanofibers were deposited on electrospun PVDF nanofibers to form a support layer consisted of PVDF and PAA nanofibers. This resulted to a more hydrophilic support compared to the plain PVDF nanofiber support. The PVDF-PAA nanofiber support then underwent a layer-by-layer deposition of polyethylenimine (PEI) and PAA to form a polyelectrolyte layer on the nanofiber surface prior to interfacial polymerization, which forms the selective polyamide layer of TFC membranes. The resultant PVDF-LbL TFC membrane exhibited enhanced hydrophilicity and porosity, without sacrificing mechanical strength. As a result, it showed high pure water permeability and low structural parameter values of 4.12 Lm−2h−1bar−1 and 221 µm, respectively, significantly better compared to commercial FO membrane. Layer-by-layer deposition of polyelectrolyte is therefore a useful and practical modification method for fabrication of high performance nanofiber-supported TFC membrane.

scholarly journals Sulfonated polysulfone supported high performance thin film composite membranes for forward osmosis

Polymer ◽  
2016 ◽  
Vol 103 ◽  
pp. 486-497 ◽  
Author(s):  
Jian Ren ◽  
Brendan O'Grady ◽  
Goliver deJesus ◽  
Jeffrey R. McCutcheon
Keyword(s):  
Thin Film ◽  
High Performance ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite ◽  
Sulfonated Polysulfone

Flexible carbon nanofiber/polyvinylidene fluoride composite membranes as interlayers in high-performance Lithium Sulfur batteries

2016 ◽  
Vol 329 ◽  
pp. 305-313 ◽  
Author(s):  
Zhenhua Wang ◽  
Jing Zhang ◽  
Yuxiang Yang ◽  
Xinyang Yue ◽  
Xiaoming Hao ◽  
...  
Keyword(s):  
Polyvinylidene Fluoride ◽  
High Performance ◽  
Carbon Nanofiber ◽  
Composite Membranes ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Thin Film Composite Membranes for Forward Osmosis Supported by Commercial Nanofiber Nonwovens

2017 ◽  
Vol 56 (4) ◽  
pp. 1057-1063 ◽  
Author(s):  
Maqsud R. Chowdhury ◽  
Liwei Huang ◽  
Jeffrey R. McCutcheon
Keyword(s):  
Thin Film ◽  
Forward Osmosis ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite
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