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Microsized uniform magnetic polymer microspheres with carboxyl groups

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Abstract

A two-step synthetic method has been described to produce uniform magnetic polymer microspheres with carboxyl groups. The approach used proposes modification of polymer microspheres with magnetic nanoparticles, therefore allowing to expand range of sizes, shapes and surface group concentration of the resulting magnetic polymer microspheres. Synthesized magnetic polymer particles of 5.2 µm in size and carboxyl group concentration of 350 µmol/g react to magnetic fields, allowing them to be easily pulled from the solution after only 4 min of exposure to a permanent magnet. The desired size and morphology of the polymer particles were achieved by studying the influence of the swelling agent concentration, seed particle amount and size, inhibitor concentration, and initiator type.

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The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Acknowledgements

The authors would like to thank D. V. Maslennikov for assistance in the sample analysis, A. G. Okunev and A. V. Matveev for providing their expertise in the use of the cloud service based on the Telegram channel that allows a user to train the neural network on microscopy images.

Funding

This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the governmental order for Boreskov Institute of Catalysis.

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Authors and Affiliations

  1. Boreskov Institute of Catalysis SB RAS, 5 Lavrentieva St., Novosibirsk, 630090, Russia

    Daria O. Shestakova, Natalya N. Sankova & Ekaterina V. Parkhomchuk

  2. Novosibirsk State University, 2 Pirogova St., Novosibirsk, 630090, Russia

    Daria O. Shestakova & Ekaterina V. Parkhomchuk

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  1. Daria O. Shestakova
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  2. Natalya N. Sankova
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  3. Ekaterina V. Parkhomchuk
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Contributions

D.S., N.S., and E.P. conceived and planned the synthesis experiments. D.S. and N.S. carried out the synthesis experiments. D.S., N.S., and E.P. contributed to the interpretation of the results. D.S. took the lead in writing the manuscript. All authors provided critical feedback and helped shape the research, analysis and manuscript.

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Correspondence to Daria O. Shestakova.

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Shestakova, D.O., Sankova, N.N. & Parkhomchuk, E.V. Microsized uniform magnetic polymer microspheres with carboxyl groups. Colloid Polym Sci 302, 695–709 (2024). https://doi.org/10.1007/s00396-023-05219-6

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  • DOI: https://doi.org/10.1007/s00396-023-05219-6

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