scholarly journals Back Cover: Sustainable Process for the Preparation of High-Performance Thin-Film Composite Membranes using Ionic Liquids as the Reaction Medium (ChemSusChem 10/2016)

ChemSusChem ◽  
2016 ◽  
Vol 9 (10) ◽  
pp. 1216-1216
Author(s):  
Hanne Mariën ◽  
Lotte Bellings ◽  
Sanne Hermans ◽  
Ivo F. J. Vankelecom
Keyword(s):  
Thin Film ◽  
Ionic Liquids ◽  
High Performance ◽  
Reaction Medium ◽  
Composite Membranes ◽  
Film Composite ◽  
Back Cover ◽  
Thin Film Composite

Sustainable Process for the Preparation of High-Performance Thin-Film Composite Membranes using Ionic Liquids as the Reaction Medium

ChemSusChem ◽  
2016 ◽  
Vol 9 (10) ◽  
pp. 1101-1111 ◽  
Author(s):  
Hanne Mariën ◽  
Lotte Bellings ◽  
Sanne Hermans ◽  
Ivo F. J. Vankelecom
Keyword(s):  
Thin Film ◽  
Ionic Liquids ◽  
High Performance ◽  
Reaction Medium ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite

High-performance thin-film composite membranes with surface functionalization by organic phosphonic acids

2018 ◽  
Vol 563 ◽  
pp. 284-297 ◽  
Author(s):  
Liang Shen ◽  
Fangqian Wang ◽  
Lian Tian ◽  
Xuan Zhang ◽  
Chun Ding ◽  
...  
Keyword(s):  
Thin Film ◽  
Surface Functionalization ◽  
High Performance ◽  
Composite Membranes ◽  
Phosphonic Acids ◽  
Film Composite ◽  
Thin Film Composite

Development of novel fluorinated additives for high performance CO2 separation thin-film composite membranes

2016 ◽  
Vol 499 ◽  
pp. 191-200 ◽  
Author(s):  
Joel M.P. Scofield ◽  
Paul A. Gurr ◽  
Jinguk Kim ◽  
Qiang Fu ◽  
Sandra E. Kentish ◽  
...  
Keyword(s):  
Thin Film ◽  
High Performance ◽  
Composite Membranes ◽  
Co2 Separation ◽  
Film Composite ◽  
Thin Film Composite

scholarly journals Use of Ionic Liquids and Co-Solvents for Synthesis of Thin-Film Composite Membranes

Membranes ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 297
Author(s):  
Peter-Renaat Van den Mooter ◽  
Liridona Dedvukaj ◽  
Ivo F. J. Vankelecom
Keyword(s):  
Thin Film ◽  
Ionic Liquids ◽  
Organic Phase ◽  
Interfacial Polymerization ◽  
Fermentation Broth ◽  
Composite Membranes ◽  
Diglycidyl Ether ◽  
High Price ◽  
Film Composite ◽  
Thin Film Composite

Polyamide (PA) thin-film composite (TFC) membranes are commonly applied in reversed osmosis (RO) and nanofiltration (NF) applications due to their thin, dense top-layer, and high selectivity. Recently, the conventional organic phase (i.e., hexane) during interfacial polymerization (IP) was replaced by less toxic ionic liquids (ILs) which led to excellent membrane performances. As the high price of most ILs limits their up-scaling, the potential use of inexpensive Aliquat was investigated in this study. The thin-film composite (TFC) membranes were optimized to remove flavor compounds, i.e., ethyl acetate (EA) and isoamyl acetate (IA), from a fermentation broth. A multi-parameter optimization was set-up involving type of support, reaction time for IP, water content of Aliquat, and concentration of both monomers m-phenylenediamine (MPD) and trimesoylchloride (TMC). The membranes prepared using Aliquat showed similar fluxes as those prepared from a reference IL 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([C4mpyr][Tf2N]) but with better EA and IA retentions, even better than for a commercial RO membrane (GEA type AF). Finally, the recently introduced epoxide-curing of Bisphenol A diglycidyl ether (BADGE) with 1,6-hexanediamine (HDA) was investigated using Aliquat as organic phase. It is the first time this type of IP was performed in combination with an IL as organic phase. The resulting membrane was used in the filtration of a 35 µM Rose Bengal (RB) in 20 wt% dimethylformamide/ water (DMF/H2O) feed mixture. A well-crosslinked poly(β-alkanolamine) film was obtained with a > 97% retention.

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.

Sign in / Sign up

Export Citation Format

Share Document