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Titanium Dioxide Floculation by Magnetic Nanocomposites Based оn Magnetite Nanoparticles and Statistical Copolymers of Acrylamide with Dimethylaminoethyl Methacrylate Hydrochloride

  • Inorganic Synthesis and Industrial Inorganic Chemistry
  • Published:
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Abstract

Magnetic flocculants based on magnetite nanoparticles and statistical copolymers of acrylamide with dimethylaminoethyl methacrylate hydrochloride, differing in the content of ionogenic links and molecular mass, were synthesized. The FeCl2 and FeCl3 co-precipitation method yielded magnetite samples, differing in the average nanoparticles size, which were then modified acrylamide cationic copolymers. Individual magnetite particles, copolymers, and magnetic flocculants obtained by modification of copolymers with magnetite were characterized by the dynamic light scattering method. The influence of the magnetite nanoparticle size and ionogenic link content of the magnetic flocculant magnetic component on the TiO2 suspension flocculation process has been estimated. The predominantly neutralizing flocculation mechanism is evidenced by the opposite sign of the TiO2 charge particles and the macromolecules of the flocculating agents. It is shown that using magnetite characterized by a particle size of 70 nm can be obtained a highly effective multifunctional flocculant for phase separation of disperse systems.

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ACKNOWLEDGMENTS

Experiments on a stereoscopic microscope MSP-2 were performed by S.S. Dryabina, Ph.D., Associate Professor of the Department of Analytical, Physical Chemistry and Physical Chemistry of Polymers, Volgograd State Technical University.

The study was carried out using the equipment of the Center for Collective Use “Nanomaterials and Nanotechnologies” of the Kazan National Research Technological University with the financial support of the project of the Ministry of Education and Science of Russia (grant no. 075-15-2021-699).

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Authors and Affiliations

  1. Kazan National Research Technological University, 420015, Kazan, Russia

    V. E. Proskurina, E. S. Kashina & A. P. Rakhmatullina

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  1. V. E. Proskurina
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  2. E. S. Kashina
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  3. A. P. Rakhmatullina
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Correspondence to V. E. Proskurina.

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Proskurina, V.E., Kashina, E.S. & Rakhmatullina, A.P. Titanium Dioxide Floculation by Magnetic Nanocomposites Based оn Magnetite Nanoparticles and Statistical Copolymers of Acrylamide with Dimethylaminoethyl Methacrylate Hydrochloride. Russ J Appl Chem 95, 1387–1393 (2022). https://doi.org/10.1134/S1070427222090142

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