Nanodiamond-modified polyamide evaporation membranes for separating methanol-methyl acetate mixtures

Avagimova, N. V.; Тойкка, А. М.; Polotskaya, G. A.

doi:10.1134/s0965544115040039

Cited by 23 publications

(6 citation statements)

References 30 publications

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“…Nanocomposite membranes based on poly(vinylidene fluoride) modified with ND have been applied to water desalination by distillation [31]. The polyphenylene- iso -phthalamide membrane containing ND in the matrix has been successfully used in pervaporation [32] and gas separation [33]. ND particles have been selected as an inorganic modifier of poly(phenylene oxide) membranes for gas separation [34].…”

Section: Introductionmentioning

confidence: 99%

Improved Hydrogen Separation Using Hybrid Membrane Composed of Nanodiamonds and P84 Copolyimide

et al. 2018

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Membrane gas separation is a prospective technology for hydrogen separation from various refinery and petrochemical process streams. To improve efficiency of gas separation, a novel hybrid membrane consisting of nanodiamonds and P84 copolyimide is developed. The particularities of the hybrid membrane structure, physicochemical, and gas transport properties were studied by comparison with that of pure P84 membrane. The gas permeability of H 2 , CO 2 , and CH 4 through the hybrid membrane is lower than through the unmodified membrane, whereas ideal selectivity in separation of H 2 /CO 2 , H 2 /CH 4 , and CO 2 /CH 4 gas pairs is higher for the hybrid membrane. Correlation analysis of diffusion and solubility coefficients confirms the reliability of the gas permeability results. The position of P84/ND membrane is among the most selective membranes on the Robeson diagram for H 2 /CH 4 gas pair.

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Section: Introductionmentioning

confidence: 99%

Improved Hydrogen Separation Using Hybrid Membrane Composed of Nanodiamonds and P84 Copolyimide

et al. 2018

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“…ND immobilized membranes based on polyvinylidene fluoride have been applied to water desalination by distillation . Mixed matrix membrane composed of ND in poly(phenylene‐ iso ‐phtalamide) matrix has been successfully used in pervaporation to separate methanol and methyl acetate mixtures .…”

Section: Introductionmentioning

confidence: 99%

Optical, mechanical, and transport studies of nanodiamonds/poly(phenylene oxide) composites

Polotskaya¹,

Avagimova²,

Тойкка

et al. 2017

Polymer Composites

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Considerable progress in the development of new materials is achieved due to the modification of polymer materials by carbon nanoparticles of various kinds. In this work new composites of nanodiamonds (ND) and poly (phenylene oxide) (PPO) were prepared by solid phase dispersing. Their solutions and dense nonporous films were studied by different techniques. The structure of the PPO/ND composites was examined by atomic force microscopy, dynamic light scattering, and birefringence. The increase of ND content in the film leads to a more complex structure because of accumulation of aggregates containing ND particles and PPO molecules. The physical and mechanical properties were exhaustively evaluated by measuring intrinsic viscosity, density, surface tension, the Young's modulus, yield stress, tensile strength, and ultimate strain. Gas transport properties were determined by measuring H2, CO2, N2, CH4, and O2 permeation. The gas permeability coefficients decrease slightly with an increase of the ND content in composites, but the ideal selectivity of gas separation increases at the same time. POLYM. COMPOS., 39:3952–3961, 2018. © 2017 Society of Plastics Engineers

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“…Diffusion membranes with ND particles incorporated into the matrix of polyphenylene oxide and polyphenylene isophthalamide exhibited improved transport properties in gas separation processes [26,27] and in the pervaporation of a methanol-methyl acetate mixture [28].…”

Section: Introductionmentioning

confidence: 99%

Pervaporation Purification of Oxygenate from an Ethyl tert-Butyl Ether/Ethanol Azeotropic Mixture

Pulyalina

Putintseva

Polotskaya

et al. 2019

Membr. Membr. Technol.

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Ethyl tert-butyl ether (ETBE) is one of the most promising oxygenates used as high-octane components of fuels. A method to purify ETBE from an ethanol/ETBE azeotropic mixture formed during industrial synthesis is pervaporation. In this study, hybrid membranes containing nanodiamond particles incorporated into the P84 copolyimide matrix have been synthesized for the pervaporation purification of ETBE. The membrane structure has been studied by scanning electron microscopy and via determining the experimental and theoretical density and free volume. The transport properties of the membranes have been determined in sorption and pervaporation experiments. It has been shown that the introduction of up to 1 wt % of nanodiamonds in the P84 matrix leads to an increase in the main mass transfer parameters, namely, the flux and the separation factor of the azeotropic mixture.

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Nanodiamond-modified polyamide evaporation membranes for separating methanol-methyl acetate mixtures

Cited by 23 publications

References 30 publications

Improved Hydrogen Separation Using Hybrid Membrane Composed of Nanodiamonds and P84 Copolyimide

Improved Hydrogen Separation Using Hybrid Membrane Composed of Nanodiamonds and P84 Copolyimide

Optical, mechanical, and transport studies of nanodiamonds/poly(phenylene oxide) composites

Pervaporation Purification of Oxygenate from an Ethyl tert-Butyl Ether/Ethanol Azeotropic Mixture

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