scholarly journals A durable thin-film nanofibrous composite nanofiltration membrane prepared by interfacial polymerization on a double-layer nanofibrous scaffold

RSC Advances ◽  
2017 ◽  
Vol 7 (29) ◽  
pp. 18001-18013 ◽  
Author(s):  
Yin Yang ◽  
Xiong Li ◽  
Lingdi Shen ◽  
Xuefen Wang ◽  
Benjamin S. Hsiao
Keyword(s):  
Thin Film ◽  
Double Layer ◽  
Interfacial Polymerization ◽  
Composite Membranes ◽  
Nanofibrous Scaffold ◽  
Nanofiltration Membrane

PPA–PAN–AA/PAN nanofibrous composite membranes with interfacial polymerization between PIP and TMC based on a PAN–AA/PAN double-layer nanofibrous substrate.

scholarly journals Thin Film Nanofibrous Composite Membrane for Dead-End Seawater Desalination

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Baturalp Yalcinkaya ◽  
Fatma Yalcinkaya ◽  
Jiri Chaloupek
Keyword(s):  
Thin Film ◽  
Active Layer ◽  
Composite Membrane ◽  
Interfacial Polymerization ◽  
Composite Membranes ◽  
Nanofibrous Scaffold ◽  
Filtration Method ◽  
Salt Ions ◽  
Dead End ◽  
Supporting Material

The aim of the study was to prepare a thin film nanofibrous composite membrane utilized for nanofiltration technologies. The composite membrane consists of a three-layer system including a nonwoven part as the supporting material, a nanofibrous scaffold as the porous surface, and an active layer. The nonwoven part and the nanofibrous scaffold were laminated together to improve the mechanical properties of the complete membrane. Active layer formations were done successfully via interfacial polymerization. A filtration test was carried out using solutions of MgSO4, NaCl, Na2SO4, CaCl2, and real seawater using the dead-end filtration method. The results indicated that the piperazine-based membrane exhibited higher rejection of divalent salt ions (>98%) with high flux. In addition, them-phenylenediamine-based membrane exhibited higher rejection of divalent and monovalent salt ions (>98% divalent and >96% monovalent) with reasonable flux. The desalination of real seawater results showed that thin film nanofibrous composite membranes were able to retain 98% of salt ions from highly saline seawater without showing any fouling. The electrospun nanofibrous materials proved to be an alternative functional supporting material instead of the polymeric phase-inverted support layer in liquid filtration.

Bioenabled Interfacial Polymerized on Nanofibrous Scaffold as Composite Nanofiltration Membrane

2012 ◽  
Vol 482-484 ◽  
pp. 565-568 ◽  
Author(s):  
Jun Zhao ◽  
Li Na Yu ◽  
Xiong Li ◽  
Yin Yang ◽  
Xue Fen Wang
Keyword(s):  
Thin Film ◽  
Contact Angle ◽  
Interfacial Polymerization ◽  
Composite Membranes ◽  
Nanofiltration Membrane ◽  
Permeate Flux ◽  
Selective Layer ◽  
Static Contact ◽  
Pes Membrane ◽  
Trimesoyl Chloride

Thin-film nanofiltration composite (TFNFC) membrane consisting of polyethersulfone (PES) nanofibrous support layer modified by 3, 4-dihydroxy-phenethylamine (dopamine) and interfacial polymerization (IFP) polyamide selective barrier layer was obtained in this study. The hydrophilicity of PES nanofibrous membrane was tremendously improved as the water static contact angle changed from 81.6° to 26.83° by dopamine modification. An ultrathin selective layer was produced by IFP reaction between solutions of piperazine (PIP) and trimesoyl chloride (TMC) on the dopamine modified porous PES membrane. The TFNFC membrane presented relatively high permeate flux (~59.9 L/m2h) and high salt rejection (~98.9%) to divalent anion solutions (1000mg/L, Na2SO4) at a low pressure of 0.6 MPa. It could be believed that dopamine modification would be very efficient to fabricate the composite membranes with stable structure and high filtration performance.

scholarly journals Zwitterion Co-Polymer PEI-SBMA Nanofiltration Membrane Modified by Fast Second Interfacial Polymerization

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 269 ◽  
Author(s):  
Yu-Hsuan Chiao ◽  
Tanmoy Patra ◽  
Micah Belle Marie Yap Ang ◽  
Shu-Ting Chen ◽  
Jorge Almodovar ◽  
...  
Keyword(s):  
Thin Film ◽  
Wastewater Treatment ◽  
Large Scale ◽  
Interfacial Polymerization ◽  
Antibacterial Properties ◽  
Operating Conditions ◽  
Nanofiltration Membrane ◽  
Nanofiltration Membranes ◽  
Film Composite ◽  
Thin Film Composite

Nanofiltration membranes have evolved as a promising solution to tackle the clean water scarcity and wastewater treatment processes with their low energy requirement and environment friendly operating conditions. Thin film composite nanofiltration membranes with high permeability, and excellent antifouling and antibacterial properties are important component for wastewater treatment and clean drinking water production units. In the scope of this study, thin film composite nanofiltration membranes were fabricated using polyacrylonitrile (PAN) support and fast second interfacial polymerization modification methods by grafting polyethylene amine and zwitterionic sulfobutane methacrylate moieties. Chemical and physical alteration in structure of the membranes were characterized using methods like ATR-FTIR spectroscopy, XPS analysis, FESEM and AFM imaging. The effects of second interfacial polymerization to incorporate polyamide layer and ‘ion pair’ characteristics, in terms of water contact angle and surface charge analysis was investigated in correlation with nanofiltration performance. Furthermore, the membrane characteristics in terms of antifouling properties were evaluated using model protein foulants like bovine serum albumin and lysozyme. Antibacterial properties of the modified membranes were investigated using E. coli as model biofoulant. Overall, the effect of second interfacial polymerization without affecting the selectivity layer of nanofiltration membrane for their potential large-scale application was investigated in detail.

Fabrication and characterization of a novel nanofiltration membrane by the interfacial polymerization of 1,4-diaminocyclohexane (DCH) and trimesoyl chloride (TMC)

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 40742-40752 ◽  
Author(s):  
Gui-E. Chen ◽  
Yan-Jun Liu ◽  
Zhen-Liang Xu ◽  
Yong-Jian Tang ◽  
Hui-Hong Huang ◽  
...  
Keyword(s):  
Thin Film ◽  
Significant Influence ◽  
Interfacial Polymerization ◽  
Nanofiltration Membrane ◽  
Film Composite ◽  
Thin Film Composite ◽  
Fabrication And Characterization ◽  
Polyamide Membrane ◽  
Trimesoyl Chloride

A novel thin-film composite polyamide membrane for nanofiltration is prepared, and the addition of sodium N-cyclohexylsulfamate is found to have a significant influence on its performance.

Highly selective thin film composite hollow fiber membranes for mixed vapor/gas separation

RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 78950-78957 ◽  
Author(s):  
Pravin G. Ingole ◽  
Won Kil Choi ◽  
Il-Hyun Baek ◽  
Hyung Keun Lee
Keyword(s):  
Thin Film ◽  
Gas Separation ◽  
Hollow Fiber ◽  
Interfacial Polymerization ◽  
Composite Membranes ◽  
Hollow Fiber Membranes ◽  
Film Composite ◽  
Thin Film Composite ◽  
Fiber Membranes ◽  
Polymerization Method

In the present study, thin film composite membranes have been prepared using an interfacial polymerization method.

Vapour phase interfacial polymerization: a method to synthesize thin film composite membranes without using organic solvents

2021 ◽  
Author(s):  
Lorena Paseta ◽  
Carlos Echaide-Gorriz ◽  
Carlos Téllez Ariso ◽  
Joaquin Coronas
Keyword(s):  
Thin Film ◽  
Reverse Osmosis ◽  
Organic Solvents ◽  
Interfacial Polymerization ◽  
Composite Membranes ◽  
Vapour Phase ◽  
Acyl Chloride ◽  
Film Composite ◽  
Thin Film Composite

Thin film composite membranes (TFC) of polyamide (PA) prepared by interfacial polymerization (IP) between a diamine and an acyl chloride are those applied to industrial nanofiltration and reverse osmosis. Water,...

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.

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