Interlayer-modulated polyamide composite membrane for organic solvent nanofiltration

Zha, Zhiyuan; He, Pengpeng; Zhao, Song; Guo, Rui; Wang, Zhi; Wang, Jixiao

doi:10.1016/j.memsci.2022.120306

Cited by 45 publications

(6 citation statements)

References 62 publications

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“…Furthermore, the electrospun porous PVA membrane exhibits a high water flux with high rejection, and the maximum water flux is achieved for the CPVANP membrane sample (78.96 L·m –2 ·h –1 ). Similarly, the maximum DMSO flux of CPVANP membrane achieves 19.15 L·m –2 ·h –1 , which is almost impossible for general dense membrane materials …”

Section: Resultsmentioning

confidence: 99%

Scale-Up Fabrication of Fiber Membrane Based on Nanoporous Polyurea Colloids for Organic Solvents/Water Separation

Li,

Zhang,

Huang

et al. 2024

ACS Appl. Polym. Mater.

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Membranes embedded with nanoparticles, especially with porous organic polymers (POPs) possessing high specific surface area and strong sorption of organic/inorganic pollutants, are gaining tremendous attention in saline or wastewater treatment considering the lower energy burden and the improving environmental sustainability. However, the commercial development of the materials has been obstructed by challenges of the scale-up fabrication of low-cost and high-performance membranes. Here, a POP membrane embedded with nanoporous polyurea colloids (PUCs) by using an electrospun technique is demonstrated. Large-scale production of PUCs is implemented through one-pot synthesis, which presents an ultrahigh yield of up to 20 wt %. The designed POP membrane exhibits an excellent adsorption capacity (19.8 g•g −1 ) of highly viscous silicone oil and displays superb potential for the removal of organic solvents, dimethyl sulfoxide (DMSO) (adsorption capacity as high as 24.6 g•g −1 ), from solvent streams. It shows a high rejection rate of up to 75% with an extremely high flux of 19.15 L•m −2 •h −1 in the separation of the DMSO/water stream, and the rejection rate still maintains at 73% after the 5-cycle process. The fabrication strategy of the POP membrane establishes a scalable and generalized approach to obtain a low-cost nanofiltration membrane with excellent separation efficiency for a vast potential for fluid separations.

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Section: Resultsmentioning

confidence: 99%

Scale-Up Fabrication of Fiber Membrane Based on Nanoporous Polyurea Colloids for Organic Solvents/Water Separation

Li,

Zhang,

Huang

et al. 2024

ACS Appl. Polym. Mater.

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“…Due to the multifactorial nature of the objects of study and indicators for assessing the consequences of laser radiation, an integrated approach has been used to statistically process the results obtained in the form of plotted radar diagrams to characterize the complex effect of two types of laser processing on the total modified surface area of the films, the average roughness, the value of the contact angle, and the number of viable cells, according to the MTT test ( Figure 8 ). This type of radar diagram is used in such studies [ 90 , 91 ].…”

Section: Resultsmentioning

confidence: 99%

Modification of Polyhydroxyalkanoates Polymer Films Surface of Various Compositions by Laser Processing

et al. 2023

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The results of surface modification of solvent casting films made from polyhydroxyalkanoates (PHAs) of various compositions are presented: homopolymer poly-3-hydroxybutyrate P(3HB) and copolymers comprising various combinations of 3-hydroxybutyrate (3HB), 3-hydroxyvalerate (3HV), 4-hydroxybutyrate(4HB), and 3-hydroxyhexanoate (3HHx) monomers treated with a CO2 laser in continuous and quasi-pulsed radiation modes. The effects of PHAs film surface modification, depending on the composition and ratio of monomers according to the results of the study of SEM and AFM, contact angles of wetting with water, adhesion and growth of fibroblasts have been revealed for the laser radiation regime used. Under continuous irradiation with vector lines, melted regions in the form of grooves are formed on the surface of the films, in which most of the samples have increased values of the contact angle and a decrease in roughness. The quasi-pulse mode by the raster method causes the formation of holes without pronounced melted zones, the total area of which is lower by 20% compared to the area of melted grooves. The number of viable fibroblasts NIH 3T3 on the films after the quasi-pulse mode is 1.5–2.0 times higher compared to the continuous mode, and depends to a greater extent on the laser treatment mode than on the PHAs’ composition. The use of various modes of laser modification on the surface of PHAs with different compositions makes it possible to influence the morphology and properties of polymer films in a targeted manner. The results that have been obtained contribute to solving the critical issue of functional biodegradable polymeric materials.

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“…Also, Zha et al prepared sandwich-like polyamide OSN membranes by interfacial polymerization using three typical structures (hydrolyzed chained polyacrylonitrile as substrates, and networked polydopamine, polyaniline, and porous COFs) as interlayers. 74 High ethanol and acetone permeance (3.1 L m À2 h À1 bar À1 and 12.4 L m À2 h À1 bar À1 ) was observed due to the thin and rough selective layer. It showed 99.0% and 95.0% rejection of dyes (M w 4 350.4 Da), and drugs as well as pigments.…”

Section: Polymer/cof Membranes For Osn Applicationmentioning

confidence: 94%

Recent advances in the fabrication of organic solvent nanofiltration membranes using covalent/metal organic frameworks

Azadi,

Singh,

Dinari

et al. 2024

Chem. Commun.

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Interlayer-modulated polyamide composite membrane for organic solvent nanofiltration

Cited by 45 publications

References 62 publications

Scale-Up Fabrication of Fiber Membrane Based on Nanoporous Polyurea Colloids for Organic Solvents/Water Separation

Scale-Up Fabrication of Fiber Membrane Based on Nanoporous Polyurea Colloids for Organic Solvents/Water Separation

Modification of Polyhydroxyalkanoates Polymer Films Surface of Various Compositions by Laser Processing

Recent advances in the fabrication of organic solvent nanofiltration membranes using covalent/metal organic frameworks

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