Modification of polymer membrane properties by low-temperature plasma

Kravets, L. I.; Gilman, A. B.; Dinescu, G.

doi:10.1134/s107036321505045x

Cited by 17 publications

(10 citation statements)

References 110 publications

(149 reference statements)

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“…The surface of the MF PC and PET (Entry 9 in Table 1 ) was not as wettable as that of the UF PES and PE membranes (Entry 10 in Table 1 ) upon H 2 O plasma under the same treatment conditions, although the PC and PET both contained carbonate and carbonyl functional groups. These studies highlighted that the structure of the treated surfaces other than plasma parameters had a remarkable influence on the physicochemical properties of the products [ 11 ].…”

Section: Low-pressure Plasma Processesmentioning

confidence: 99%

“…Plasma polymerization is a process developed for surface modification by producing nanoscale films [ 14 , 53 ], suitable for altering materials surface properties [ 12 , 13 ]. The polymer structure generated by plasma polymerization are cross-linked to generate controlled free-volume [ 11 ]. In addition, deposited structures may be pinhole-free and produced from either single or mixtures of monomer precursors allowing for customizable chemistries.…”

Section: Low-pressure Plasma Processesmentioning

confidence: 99%

“…It is difficult to conclude whether the polymerization induced by plasma is homogeneous or heterogeneous polymerization reactions due to the versatility of the plasma processes. Plasma parameters and the chemical properties of the membrane substrates can all influence the homogeneity of the plasma polymerized films [ 11 ]. The homogeneity of the polymerization determines the repetition of the monomer units, which is a crucial factor for governing the membrane material properties and performance.…”

Section: Low-pressure Plasma Processesmentioning

confidence: 99%

“…The plasma modification routes only require the use of a lower degree of ionization and are generally referred to ‘cold’ plasma processes [ 10 ]. A lower degree of ionization only delivers surface modification without damaging the bulk material of the treating substrates and thus offering smooth surface modification solutions [ 11 ]. The plasma process conditions may be fine-tuned by altering the discharge parameters, including the power, chemical properties, and flow rate of the plasma gas and precursors, as well as treatment durations [ 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Plasma Modification and Synthesis of Membrane Materials—A Mechanistic Review

et al. 2018

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Although commercial membranes are well established materials for water desalination and wastewater treatment, modification on commercial membranes is still necessary to deliver high-performance with enhanced flux and/or selectivity and fouling resistance. A modification method with plasma techniques has been extensively applied for high-performance membrane production. The paper presents a mechanistic review on the impact of plasma gas and polymerization, at either low pressure or atmospheric pressure on the material properties and performance of the modified membranes. At first, plasma conditions at low-pressure such as plasma power, gas or monomer flow rate, reactor pressure, and treatment duration which affect the chemical structure, surface hydrophilicity, morphology, as well as performance of the membranes have been discussed. The underlying mechanisms of plasma gas and polymerization have been highlighted. Thereafter, the recent research in plasma techniques toward membrane modification at atmospheric environment has been critically evaluated. The research focuses of future plasma-related membrane modification, and fabrication studies have been predicted to closely relate with the implementation of the atmospheric-pressure processes at the large-scale.

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Section: Low-pressure Plasma Processesmentioning

confidence: 99%

Section: Low-pressure Plasma Processesmentioning

confidence: 99%

Section: Low-pressure Plasma Processesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Plasma Modification and Synthesis of Membrane Materials—A Mechanistic Review

et al. 2018

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“…Chemical modification [8][9][10] is the treatment of surface membranes with various aggressive media, the application of a new working layer to the substrate, the provision of hydrophilicity or hydrophobic properties to the membrane surface, the change of membrane surface charge and the production of composite membranes. Physical modification of membranes provides for the impact on surface by electromagnetic waves and plasma; ultrasonic, thermal and radiation processing [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Modification of Membranes from Nylon by Microwave Radiation in Argon, Nitrogen and Atmospheric Air

Фазуллин¹,

Kharitonova²,

Маврин³

et al. 2018

IJET

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Microfiltration thin-film membranes of nylon were treated with microwave radiation within the decimeter wavelength range in air, nitrogen and argon to increase the specific productivity and the degree of the resistant oil emulsion separation due to structural transformations in the surfaces and membrane pores. After the processing of nylon membrane in air, argon and nitrogen, the specific performance of the membranes increases during the filtration of distilled water by 1.3 times. This circumstance is connected, probably with the increase of membrane pore size. And when the oil emulsion is separated, the specific productivity is increased after the treatment in air and oxygen up to 2.3 times, and after the treatment in argon it is decreased by 2 times. The decrease in performance occurs apparently due to the crosslinking of the pores and the surface layer of the membrane. It has been established that the treatment of nylon membranes with microwave radiation in air, nitrogen and argon leads to the decrease of oil emulsion separation degree, which is explained by the membrane surface etching. The worst degree of purification makes 83% and it is observed after the separation of the emulsion with the membrane treated by microwave radiation in a nitrogen atmosphere, when the loss of membrane mass after the microwave treatment was 0.69%. The purification degree from oil is reduced in the least after the treatment in argon medium - 93, and the loss of membrane mass after treatment makes 0.26%.

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IR-initiated preparation method of high performance nanofiltration membranes using graft polymerization of acrylic acid onto polyacrylonitrile surface

Khani-Arani

Akbari

2022

Korean J. Chem. Eng.

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Modification of polymer membrane properties by low-temperature plasma

Cited by 17 publications

References 110 publications

Plasma Modification and Synthesis of Membrane Materials—A Mechanistic Review

Plasma Modification and Synthesis of Membrane Materials—A Mechanistic Review

Modification of Membranes from Nylon by Microwave Radiation in Argon, Nitrogen and Atmospheric Air

IR-initiated preparation method of high performance nanofiltration membranes using graft polymerization of acrylic acid onto polyacrylonitrile surface

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