Asymmetric Membranes Based on Copolyheteroarylenes with Imide, Biquinoline, and Oxazinone Units: Formation and Characterization

Galina Polotskaya, Alexandra Pulyalina, Mikhail Goikhman, Irina Podeshvo, Iosif Gofman, Sergey Shugurov, Valeriia Rostovtseva, Ilya Faykov, Maksim Tataurov, Alexander Toikka, Alexander Polotsky

Research output

Abstract

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 copolybenzoxazinoneimide (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.
Original languageEnglish
Article number1542
Number of pages17
JournalPolymers
Volume11
Issue number10
Publication statusPublished - 22 Sep 2019

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Imides
Membranes
Acids
Ultrafiltration
Molecular weight
Mechanical testing
Cyclization
Optical resolving power
Dehydration
Dispersions
Pore size
Thermogravimetric analysis
Porosity
Phase transitions
Heat treatment
Calibration
Proteins
Heating
Scanning electron microscopy

Cite this

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title = "Asymmetric Membranes Based on Copolyheteroarylenes with Imide, Biquinoline, and Oxazinone Units: Formation and Characterization",
abstract = "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 copolybenzoxazinoneimide (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.",
keywords = "copolyheteroarylene, membrane, Ultrafiltration, protein calibration, rejection",
author = "Galina Polotskaya and Alexandra Pulyalina and Mikhail Goikhman and Irina Podeshvo and Iosif Gofman and Sergey Shugurov and Valeriia Rostovtseva and Ilya Faykov and Maksim Tataurov and Alexander Toikka and Alexander Polotsky",
year = "2019",
month = "9",
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language = "English",
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journal = "Polymers",
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T1 - Asymmetric Membranes Based on Copolyheteroarylenes with Imide, Biquinoline, and Oxazinone Units: Formation and Characterization

AU - Polotskaya, Galina

AU - Pulyalina, Alexandra

AU - Goikhman, Mikhail

AU - Podeshvo, Irina

AU - Gofman, Iosif

AU - Shugurov, Sergey

AU - Rostovtseva, Valeriia

AU - Faykov, Ilya

AU - Tataurov, Maksim

AU - Toikka, Alexander

AU - Polotsky, Alexander

PY - 2019/9/22

Y1 - 2019/9/22

N2 - 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 copolybenzoxazinoneimide (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.

AB - 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 copolybenzoxazinoneimide (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.

KW - copolyheteroarylene

KW - membrane

KW - Ultrafiltration

KW - protein calibration

KW - rejection

UR - https://www.researchgate.net/publication/335978900_Asymmetric_Membranes_Based_on_Copolyheteroarylenes_with_Imide_Biquinoline_and_Oxazinone_Units_Formation_and_Characterization

M3 - Article

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