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Ozkan S, Petrov V, Vasilev A, Chernavskii P, Efimov M, Muratov D, Pankina G, Karpacheva G. Formation Features of Polymer-Metal-Carbon Ternary Electromagnetic Nanocomposites Based on Polyphenoxazine. Polymers (Basel) 2023; 15:2894. [PMID: 37447539 DOI: 10.3390/polym15132894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
Novel ternary hybrid polyphenoxazine (PPOA)-derived nanocomposites involving Co-Fe particles and single-walled (SWCNTs) or multi-walled (MWCNTs) carbon nanotubes were prepared and investigated. An efficient one-pot method employing infrared (IR) heating enabled the formation of Co-Fe/CNT/PPOA nanocomposites. During this, the dehydrogenation of phenoxazine (POA) units led to the simultaneous reduction of metals by released hydrogen, yielding bimetallic Co-Fe particles with a size range from the nanoscale (5-30 nm) to the microscale (400-1400 nm). The synthesized Co-Fe/CNT/PPOA nanomaterials exhibited impressive thermal stability, demonstrating a half-weight loss at 640 °C and 563 °C in air for Co-Fe/SWCNT/PPOA and Co-Fe/MWCNT/PPOA, respectively. Although a slightly broader range of saturation magnetization values was obtained using MWCNTs, it was found that the type of carbon nanotube, whether an SWCNT (22.14-41.82 emu/g) or an MWCNT (20.93-44.33 emu/g), did not considerably affect the magnetic characteristics of the resulting nanomaterial. By contrast, saturation magnetization escalated with an increasing concentration of both cobalt and iron. These nanocomposites demonstrated a weak dependence of electrical conductivity on frequency. It is shown that the conductivity value for hybrid nanocomposites is higher compared to single-polymer materials and becomes higher with increasing CNT content.
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Affiliation(s)
- Sveta Ozkan
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, Moscow 119991, Russia
| | - Valeriy Petrov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, Moscow 119991, Russia
| | - Andrey Vasilev
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, Moscow 119991, Russia
| | - Petr Chernavskii
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, Moscow 119991, Russia
- Department of Chemistry Lomonosov, Moscow State University, 1-3 Leninskie Gory, Moscow 119991, Russia
| | - Mikhail Efimov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, Moscow 119991, Russia
| | - Dmitriy Muratov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, Moscow 119991, Russia
| | - Galina Pankina
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, Moscow 119991, Russia
- Department of Chemistry Lomonosov, Moscow State University, 1-3 Leninskie Gory, Moscow 119991, Russia
| | - Galina Karpacheva
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, Moscow 119991, Russia
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Electrochemical behavior of polydiphenylamine-2-carboxylic acid and its hybrid nanocomposites with single-walled carbon nanotubes on anodized graphite foil in lithium aprotic electrolyte. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Ozkan SZ, Karpacheva GP, Efimov MN, Vasilev AA, Muratov DG, Petrov VA, Chernavskii PA, Pankina GV. One-step synthesis, characterization and properties of novel hybrid electromagnetic nanomaterials based on polydiphenylamine and Co-Fe particles in the absence and presence of single-walled carbon nanotubes. RSC Adv 2021; 11:24772-24786. [PMID: 35481017 PMCID: PMC9036972 DOI: 10.1039/d1ra03114g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 07/08/2021] [Indexed: 11/23/2022] Open
Abstract
A one-step preparation method for hybrid electromagnetic nanomaterials based on polydiphenylamine (PDPA) and bimetallic Co-Fe particles in the absence and presence of single-walled carbon nanotubes (SWCNT) was proposed. During IR heating of PDPA in the presence of Co(ii) and Fe(iii) salts in an inert atmosphere at T = 450-600 °C, the polycondensation of diphenylamine (DPA) oligomers and dehydrogenation of phenyleneamine units of the polymer with the formation of C[double bond, length as m-dash]N bonds and reduction of metals by evolved hydrogen with the formation of bimetallic Co-Fe particles dispersed in a polymer matrix occur simultaneously. When carbon nanotubes are introduced into the reaction system, a nanocomposite material is formed, in which bimetallic Co-Fe particles immobilized on SWCNT are distributed in the matrix of the polymer. According to XRD data, reflection peaks of bimetallic Co-Fe particles at diffraction scattering angles 2θ = 69.04° and 106.5° correspond to a solid solution based on the fcc-Co crystal lattice. According to SEM and TEM data, a mixture of particles with sizes of 8-30 nm and 400-800 nm (Co-Fe/PDPA) and 23-50 nm and 400-1100 nm (Co-Fe/SWCNT/PDPA) is formed in the nanocomposites. The obtained multifunctional Co-Fe/PDPA and Co-Fe/SWCNT/PDPA nanomaterials demonstrate good thermal, electrical and magnetic properties. The saturation magnetization of the nanomaterials is M S = 14.99-31.32 emu g-1 (Co-Fe/PDPA) and M S = 29.48-48.84 emu g-1 (Co-Fe/SWCNT/PDPA). The electrical conductivity of the nanomaterials reaches 3.5 × 10-3 S cm-1 (Co-Fe/PDPA) and 1.3 S cm-1 (Co-Fe/SWCNT/PDPA). In an inert medium, at 1000 °C the residue is 71-77%.
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Affiliation(s)
- Sveta Zhiraslanovna Ozkan
- A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29 Leninsky Prospect Moscow 119991 Russia
| | - Galina Petrovna Karpacheva
- A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29 Leninsky Prospect Moscow 119991 Russia
| | - Mikhail Nikolaevich Efimov
- A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29 Leninsky Prospect Moscow 119991 Russia
| | - Andrey Aleksandrovich Vasilev
- A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29 Leninsky Prospect Moscow 119991 Russia
| | - Dmitriy Gennad'evich Muratov
- A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29 Leninsky Prospect Moscow 119991 Russia
| | - Valeriy Alekseevich Petrov
- A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29 Leninsky Prospect Moscow 119991 Russia
| | - Petr Aleksandrovich Chernavskii
- A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29 Leninsky Prospect Moscow 119991 Russia
- Department of Chemistry, Lomonosov Moscow State University 1-3 Leninskie Gory Moscow 119991 Russia
| | - Galina Viktorovna Pankina
- A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29 Leninsky Prospect Moscow 119991 Russia
- Department of Chemistry, Lomonosov Moscow State University 1-3 Leninskie Gory Moscow 119991 Russia
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