title: Asymmetric Membranes Based on Copolyheteroarylenes with Imide, Biquinoline, and Oxazinone Units: Formation and Characterization
metadata.name: dc.contributor.author
metadata.value: Polotskaya, Galina
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Pulyalina, Alexandra
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Goikhman, Mikhail
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Podeshvo, Irina
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Gofman, Iosif
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Shugurov, Sergey
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Rostovtseva, Valeriia
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Faykov, Ilya
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Tataurov, Maksim
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Toikka, Alexander
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Polotsky, Alexander
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2019-11-11T08:41:59Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2019-11-11T08:41:59Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2019-09-22
metadata.lang: -
metadata.name: dc.identifier
metadata.value: 10.3390/polym11101542
metadata.lang: -
metadata.name: dc.identifier.issn
metadata.value: 10.3390/polym11101542
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/16558
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: Modern ultrafiltration requires novel perfect membranes with narrow pore size, high porosity, and minimal pore tortuosity to achieve high separation performance. In this work, copolyamic acid (co-PAA) was synthesized and used for the preparation of asymmetric porous membranes by phase inversion technique. Several co-PAA membranes were heated up to 250 °C; during heating, they undergo solid-phase transformation into co-polybenzoxazinoneimide (co-PBOI) via dehydration and cyclization. Comparative characterization of both co-PAA and co-PBOI membranes was realized by scanning electron microscopy, mechanical testing, thermogravimetric analysis, and ultrafiltration experiments. Membrane calibration was carried out using a mixture of seven proteins with different molecular weights. During heat treatment, the molecular weight cut-off of the membranes decreased from 20 × 103 g/mol (co-PAA) to 3 × 103 g/mol (co-PBOI). Abnormally low dispersions of rejection (0.3 for co-PAA and 0.45 for co-PBOI) were observed for the studied membranes; this fact indicates that the membranes possess enhanced resolving power.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: This work was funded by the Russian Science Foundation (RSF) [grant 16-13-10164].
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: copolyheteroarylene
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: membrane
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: ultrafiltrarion
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: rejection
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Asymmetric Membranes Based on Copolyheteroarylenes with Imide, Biquinoline, and Oxazinone Units: Formation and Characterization
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: polymers-11-01542.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/16558/1/polymers-11-01542.pdf
resources.format: Adobe PDF
resources.size: 2,45 MB