Formation of Multilayer Membranes from One Polymer Using IR Treatment

Yushkin, A. A.; Balynin, A. V.; Ефимов, М. Н.; Муратов, Д. Г.; Карпачева, Г. П.; Волков, А. В.

doi:10.1134/s2517751622040114

Cited by 6 publications

(2 citation statements)

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“…A laboratory-synthesized PAN homopolymer was used as a reference material. This polymer was used for preparation of the membrane in our previous works and a detailed description can be found in our previous articles [ 25 , 30 , 51 ]. Membranes from this polymer were used as a reference for comparison of the obtained P(AN-co-AA) membranes.…”

Section: Methodsmentioning

confidence: 99%

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Acrylonitrile–Acrylic Acid Copolymer Ultrafiltration Membranes for Selective Asphaltene Removal from Crude Oil

Yushkin,

Balynin,

Nebesskaya

et al. 2023

Membranes

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In this study, ultrafiltration membranes were developed via a nonsolvent-induced phase separation method for the removal of asphaltenes from crude oil. Polyacrylonitrile (PAN) and acrylonitrile copolymers with acrylic acid were used as membrane materials. Copolymerizing acrylonitrile with acrylic acid resulted in an improvement in the fouling resistance of the membranes. The addition of 10% of acrylic acid to the polymer chain decreases the water contact angle from 71° to 43°, reducing both the total fouling and irreversible fouling compared to membranes made from a PAN homopolymer. The obtained membranes with a pore size of 32–55 nm demonstrated a pure toluene permeance of 84.8–130.4 L/(m2·h·bar) and asphaltene rejection from oil/toluene solutions (100 g/L) of 33–95%. An analysis of the asphaltene rejection values revealed that the addition of acrylic acid increases the rejection values in comparison to PAN membranes with the same pore size. Our results suggest that the acrylonitrile–acrylic acid copolymer ultrafiltration membranes have promising potential for the efficient removal of asphaltenes from crude oil.

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Section: Methodsmentioning

confidence: 99%

“…It is a semicrystalline polymer that is insoluble in nonpolar and low-polar solvents, such as hydrocarbons and alcohols [ 23 ]. PAN finds a wide range of applications, from the textile industry [ 24 ], through polymeric membranes preparation [ 25 , 26 ], to the production of carbon materials [ 27 ].…”

Section: Introductionmentioning

confidence: 99%