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201920212022

论文（9）

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1Polymerization of 2-(Perfluorohexyl)ethyl Methacrylate in the Presence of 2-Cyano-2-propyl Dithiobenzoate in Supercritical CO2

Chekurov K. E.,Barabanova A. I.,Blagodatskikh I. V.,Vyshivannaya O. V.,Muranov A. V.,Peregudov A. S.,Khokhlov A. R.

The radical polymerization of 2-(perfluorohexyl)ethyl methacrylate (FHEMA) initiated by azobis(isobutyronitrile) in the presence of a commercially available chain transfer agent, 2-cyano-2-propyl dithiobenzoate, carried out in trifluorotoluene (TFT) or in supercritical carbon dioxide (scCO2) was studied for the first time. The conditions were found under which the FHEMA polymerization in TFT or in scCO2 proceeds under homogeneous conditions with reversible chain transfer via the addition–fragmentation mechanism.

2022Doklady Chemistry（2022）

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2Properties of Solutions of Amphiphilic Diblock and Random Copolymers of 2-Perfluorohexylethyl Methacrylate and 2-Hydroxyethyl Methacrylate and Coatings Based on Them

Blagodatskikh I. V.,Vyshivannaya O. V.,Chekurov K. E.,Barabanova A. I.,Khokhlov A. R.

The study addresses the relationship between the structure of solutions of amphiphilic diblock and random copolymers of 2-(perfluorohexyl)ethyl methacrylate and 2-hydroxyethyl methacrylate in mixed solvents and water contact angles of the surfaces treated with these solutions. For the first time, the solubility and the structuring of homo- and copolymers in mixed solvents were studied and the regions of molecular solubility and microphase and macrophase separation were determined by light scattering techniques. The structure of thin films formed from various solutions was characterized by transmission electron microscopy.

2022Doklady Physical Chemistry（2022）

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3Synthesis and Surface Properties of Amphiphilic Fluorine‐containing Diblock Copolymers

Kirill E. Chekurov,Anna I. Barabanova,Inesa V. Blagodatskikh,Boris V. Lokshin,Mikhail S. Kondratenko,Marat O. Gallyamov,Alexander S. Peregudov,Alexei R. Khokhlov

Amphiphilic diblock copolymers (DCs) of 2,3,4,5,6-pentafluorostyrene (PFS) and 2-hydroxyethyl methacrylate (HEMA) of different composition and molecular weights were prepared by two-step reversible addition-fragmentation chain transfer (RAFT) polymerization and first used for preparation of superhydrophobic coatings for cotton/polyester fabrics. The transition from hydrophobic to superhydrophobic coatings is controlled by the ratio between poly(2,3,4,5,6-pentafluorostyrene) (PPFS) block and poly(2-hydroxyethyl methacrylate) (PHEMA) block lengths (P-n(PFS)/P-n(HEMA)). The increase inP(n)(PFS)/P(n)(HEMA)is accompanied by a significant increase in water (theta(H)(O)(2)) and diiodomethane (theta(CH)(I)(2)(2)) contact angles, which reach the plateau atP(n)(PFS)/P-n(HEMA)= 3.5 and remains almost constant up toP(n)(PFS)/P-n(HEMA)= 6.2. Surface modification of the cotton/polyester fabric with the DC havingP(n)(PFS)/P-n(HEMA)= 6.2 produced superhydrophobic surface with theta(H)(O)(2)= 158 +/- 4 degrees and contact angle hysteresis CAH = 5 +/- 2 degrees, and theta(CH)(I)(2)(2)= 107 +/- 3 degrees.

2021JOURNAL OF APPLIED POLYMER SCIENCE（2021）引用：6

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4Omniphobic Coatings Based on Amphiphilic Diblock Copolymers of 2-(Perfluorohexyl)ethyl Methacrylate and 2-Hydroxyethyl Methacrylate

Chekurov K. E.,Barabanova A. I.,Blagodatskikh I. V.,Kabaeva N. M.,Barakovskaya I. G.,Buyanovskaya A. G.,Moscow State University

Amphiphilic diblock copolymers of 2-(perfluorohexyl)ethyl methacrylate and 2-hydroxylethyl methacrylate have been synthesized for the first time by two-stage reversible addition-fragmentation chain transfer polymerization and have been used as coatings on cotton fabric. The hydrophobic and oleophobic properties of fabric coatings obtained by using the diblock copolymers have been studied; samples with superhydrophobic properties have been obtained; it has been shown that the contact angles can be controlled by the ratio of the lengths of polymethacrylate blocks.

2021Doklady Chemistry（2021）引用：2

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5Омнифобные Покрытия Из Амфифильных Диблок-Сополимеров 2-(Перфторгексилэтил)метакрилата И 2-Гидроксиэтилметакрилата

К. Е. Чекуров,А. И. Барабанова,И. В. Благодатских,Н. М. Кабаева, И. Г. Бараковская,А. Г. Буяновская,А. Р. Хохлов

2021Доклады Российской академии наук Химия, науки о материалах

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6Study of the of Polymerization of 2,3,4,5,6-Pentafluorostyrene in the Presence of Poly-2-hydroxyethyl Methacrylate Chain Transfer Agent

K. E. Chekurov,A. I. Barabanova,I. V. Blagodatskikh,A. V. Muranov,T. V. Laptinskaya,A. S. Peregudov,A. R. Khokhlov

The radical polymerization of 2,3,4,5,6-pentafluorostyrene (PFS) in the presence of poly-2-hydroxyethyl methacrylate with a dithiobenzoate end group as a chain transfer agent was studied in DMF-d7 in situ by 1H NMR spectroscopy. It was found that the reaction has virtually no induction period and proceeds at a higher rate than PFS polymerization in the presence of a low-molecular-weight chain transfer agent. A possible reason for the observed kinetic features is the self-assembly of PFS and 2-hydroxyethyl methacrylate diblock copolymers during the polymerization.

2020Doklady Chemistry（2020）

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7ИССЛЕДОВАНИЕ ПОЛИМЕРИЗАЦИИ 2,3,4,5,6-ПЕНТАФТОРСТИРОЛА В ПРИСУТСТВИИ ПОЛИ-2-ГИДРОКСИЭТИЛМЕТАКРИЛАТНОГО АГЕНТА ПЕРЕДАЧИ ЦЕПИ

К. Е. Чекуров,А. И. Барабанова,И. В. Благодатских,А. В. Муранов, Т. В. Лаптинская,А. С. Перегудов,А. Р. Хохлов

2020Доклады Российской академии наук Химия, науки о материалах

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8Синтез И Самоассоциация Амфифильных Диблок-Сополимеров 2,3,4,5,6-Пентафторстирола

К Е Чекуров,А И Барабанова,И. В. Благодатских,Б В Локшин,А С Перегудов, С,А Р Хохлов

Амфифильные диблок-сополимеры (ДС) 2,3,4,5,6-пентафторстирола и 2-гидроксиэтилметакрилата впервые синтезированы двухстадийной радикальной полимеризацией с обратимой передачей цепи по механизму присоединения–фрагментации. Морфология плёнок из ДС, имеющих близкий к эквимолекулярному состав, исследована просвечивающей электронной микроскопией. Наблюдаемое микрофазовое расслоение с образованием сферических нанодоменов является нетипичным для эквимолекулярных ДС и связано, вероятно, с образованием водородных связей между гидроксильными и карбонильными группами (ОН ∙∙∙ ОН и С=О ∙∙∙ НО) в поли-2-гидроксиэтилметакрилатных блоках. Очевидно, именно способность ДС к самоорганизации является причиной формирования тканевых покрытий с низкой поверхностной энергией (γ = 11,9 мДж/м 2 ) и относительно высокими контактными углами смачивания водой (θ Н2О = 120° ± 6°) и дийодметаном (θ CH2I2 = 93° ± 2°).

2019Доклады Академии наук

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9Synthesis and Self-Assembling of Amphiphilic Diblock Copolymers of 2,3,4,5,6-Pentafluorostyrene

K. E. Chekurov,A. I. Barabanova,I. V. Blagodatskikh,B. V. Lokshin,A. S. Peregudov,S. S. Abramchuk,A. R. Khokhlov

Amphiphilic diblock-copolymers (DC) of (2,3,4,5,6)-pentafluorostyrene and 2-hydroxyethyl methacrylate were prepared for the first time by two-step reversible addition–fragmentation chain transfer (RAFT) polymerization. The morphology of films of diblock-copolymers that have a composition close to equimolar was studied by transmission electron microscopy. The observed microphase separation and formation of spherical nanodomains is not typical for equimolar diblock-copolymers and seems to result from hydrogen bonding between the hydroxyl and carbonyl groups (OH···OH and C=O···HO) in poly(2-hydroxyethyl methacrylate) blocks. Obviously, it is the ability of diblock-copolymers to self-organization is the cause of formation of fabric coatings with low surface energy (γ = 11.9 mJ/m2) and relatively large water contact angles (θН2О = 120±6°) and diiodmetane (θCH2I2 = 93±2°).

2019Doklady Chemistry（2019）引用：5

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