Thin film composite nanofiltration membranes assembled layer-by-layer via interfacial polymerization from polyethylenimine and trimesoyl chloride

Wu, Dihua; Huang, Yifeng; Yu, Shuili; Lawless, Darren; Feng, Xiao

doi:10.1016/j.memsci.2014.08.055

Cited by 164 publications

(67 citation statements)

References 16 publications

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“…The membrane [PA] exhibited a total permeation flux of 100 g/(m 2 .h) and a permeate water concentration of 51 wt%. This membrane was prepared under conditions appropriate for nanofiltration [3,4] and its skin layer was not dense enough to yield a high selectivity in pervaporation. The pervaporation performance of the [PD] membrane is also shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The polyamide sublayer was formed by interfacial polymerization from polyethylenimine (PEI) and trimesoyl chloride (TMC) at a PEI concentration of 4.0 wt% and a TMC concentration of 0.8 wt%. The procedure of interfacial polymerization to form a polyamide layer has been described elsewhere [3]. A possible mechanism for oxidative self-polymerization of dopamine has been described elsewhere [24,28].…”

Section: Membrane Preparationmentioning

confidence: 99%

“…Polyamide-based thin film composite (TFC) membranes prepared by interfacial polymerization are generally used for reverse osmosis [1,2] and nanofiltration [3,4]. A great deal of research has been done recently to develop TFC membranes for pervaporation applications, especially for the dehydration of organic solvents.…”

Section: Introductionmentioning

confidence: 99%

“…It may also act as a gutter layer between the substrate and the polyamide if it is deposited prior to formation of the polyamide layer by interfacial polymerization. This approach has several potential advantages: (1) the process of interfacial polymerization for the polyamide layer formation has been studied in details in our previous study [3,4] and thus the properties of the polyamide layer can be easily tailored, (2) polyamide formation by interfacial polymerization and dopamine deposition by self-polymerization can be carried out independently, (3) the polydopamine deposition is easy to accomplish which does not need any catalyst, organic solvent or rigorous reaction conditions, (4) the catechol groups of dopamine can react with amines under oxidizing conditions via the Michael addition or Schiff base reactions [31,32], which will enhance the anchoring and adhesion between the polydopamine and polyamide sublayers, thereby improving the membrane stability. The effects of the number and sequence of the polydopamine depositions on the pervaporation performance of the resulting polyamide/polydopamine composite membranes were studied in this work.…”

Section: Introductionmentioning

confidence: 99%

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Thin film composite membranes comprising of polyamide and polydopamine for dehydration of ethylene glycol by pervaporation

Martin

et al. 2015

Journal of Membrane Science

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Section: Resultsmentioning

confidence: 99%

Section: Membrane Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thin film composite membranes comprising of polyamide and polydopamine for dehydration of ethylene glycol by pervaporation

Martin

et al. 2015

Journal of Membrane Science

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“…Due to scarcity in water stressed regions, membrane based desalination capacity has exceeded 17,000 plants worldwide producing over 80 million cubic meters of potable water per day. TFC membranes are composed of three polymer layers: a non-woven polymer for mechanical support, upon which a second porous UF support layer commonly consisting of polysulfones is cast, and upon which a third thin skin layer is formed [7][8][9][10]. This skin layer is usually a thin, dense polyamide (PA) and is the selective layer in reverse osmosis (RO) or nanofiltration (NF) membranes.…”

Section: Introductionmentioning

confidence: 99%

Ink-jet printing assisted fabrication of thin film composite membranes

Badalov

Arnusch

2016

Journal of Membrane Science

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Positively Charged Poly(Piperazinamide) Nanofiltration Membranes for the Fast Removal of Metal Ions

Liu

Kong

Bian

et al. 2022

Adv Materials Inter

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In addition, in daily life and industry, the high mineral content in water will cause scaling and serious plumbing failures in boilers and heat exchangers, reducing the service efficiency of these appliances. [9][10][11] High-efficient ion separation technology to remove the divalent cations is necessary to deal with these problems. [12][13][14] Due to the characteristics of selective separation of monovalent/divalent or multivalent ions, nanofiltration (NF) separation technology stands out in the application of seawater desalination, food processing, printing, dyeing textiles, and other fields. [15][16][17][18][19] The mechanism of the NF membrane for ions separation depends on the synergistic effect of electrostatic repulsion and size sieving. [15,20] Positively charged NF membranes generally provide a higher rejection for removing divalent/multivalent cations from water. [21,22] The conventional interfacial polymerization process is usually based on the monomer structure, using m-phenylenediamine (MPD) and poly ethylene imine (PEI) as water monomers to prepare normal positivecharge nanofiltration membranes. [23,24] For instance, the famous commercial NF membrane, NF90, is prepared from MPD and 1,3,5-trimesoyl chloride (TMC), which has an excellent retention effect on metal cations (including mono valent ions). [15,24,25] However, the IP reaction activity of MPD and TMC is too high to control, and it is easy to form a dense active layer, producing low permeance and non-selective removal of monovalent and divalent ions. [25][26][27] Due to the large molecular weight and slow diffusion, the positive NF membranes derived from PEI always suffer from the problem of low regulation of the reaction process, loose pore structure, and thick active layer, leading to relatively low rejection of divalent metal ions and water permeance. [28][29][30][31][32] Till now, piperazine (PIP) has been the most commonly used aliphatic amine monomer in the preparation of polyamide (PA) NF membranes. [18,33,34] Compared with other amine monomers, PIP is a small molecule with a definite molecular size. The polymeric network structure obtained from the interfacial polymerization of PIP and TMC could be designed by tuning the chemical equivalent ratio of PIP and TMC participating in the reaction in theory. Actually, NF membranes based on PIP and TMC always exhibit outstanding desalination performance in terms of rejection and water permeance. [35][36][37] However, in the IP process of PIP and TMC, the reaction between Positively charged nanofiltration (NF) membranes with high perm-selectivity are highly desired to remove divalent cations such as Ca 2+ and Mg 2+ ions to ensure the safety of domestic and industrial water supply. In this work, a poly(piperazinamide) NF membrane with a positively charged surface is fabricated via the surfactant-assembly regulated interfacial polymerization (SARIP) of piperazine (PIP) and 1,3,5-trimesoyl chloride (TMC). The surfactant assembly can accelerate PIP monomer into the hexane to react with TMC monomer...

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Thin film composite nanofiltration membranes assembled layer-by-layer via interfacial polymerization from polyethylenimine and trimesoyl chloride

Cited by 164 publications

References 16 publications

Thin film composite membranes comprising of polyamide and polydopamine for dehydration of ethylene glycol by pervaporation

Thin film composite membranes comprising of polyamide and polydopamine for dehydration of ethylene glycol by pervaporation

Ink-jet printing assisted fabrication of thin film composite membranes

Positively Charged Poly(Piperazinamide) Nanofiltration Membranes for the Fast Removal of Metal Ions

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