Formation of sorption acrylamide foam composites under microwave heating conditions

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Abstract

The results of the formation of foamed acrylamide sorption composites (SC) from suspensions of various natures under microwave heating conditions are presented. The increase in sorption properties (SP) was carried out due to the additional introduction of inorganic (manganese oxide) and organic (chitosan) sorbents into the acrylamide foam matrix. The production of acrylamide foam composites based on dispersion media with chemical reagents that react with toxic compounds and form sediments in the polymer matrix increases the sorption capacity (SC).

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About the authors

V. N. Gorshenev

Emanuel Institute of Biochemical Physics of the Russian Academy of Sciences

Email: lina.invers@gmail.com
Russian Federation, Moscow

M. A. Yakovleva

Emanuel Institute of Biochemical Physics of the Russian Academy of Sciences

Author for correspondence.
Email: lina.invers@gmail.com
Russian Federation, Moscow

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2. Fig. 1. Absorption spectra of a PAAG gel sample: 1 – initial solution of cobalt salt (0.01 M), 2 – cobalt solution after the release of cobalt nitrate from the gel into water.

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3. Fig. 2. To prevent the release of cobalt ions from the foam gel, the gel foaming was carried out on a solution of alkali KOH (a) or sodium hydrogen phosphate Na2HPO4 (b) as a dispersion medium. As a result of the cobalt hydroxide precipitation reaction, the release of cobalt ions from the gel matrix was reduced; 1 - initial solution of cobalt salt (0.479 M), 2 - cobalt solution after the release of cobalt nitrate from the gel into water.

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4. Fig. 3. Raman spectra: a – PAAG gel, b – after the reaction of manganese oxide formation in polyacrylamide gel.

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5. Fig. 4. Experiment with precipitation of manganese dioxide by the reaction of interaction of 3% hydrogen peroxide solution with KMnO4 solution: a – type of reaction in cobalt nitrate solution before precipitation of manganese oxide, b – type of reaction with precipitation of solid phase particles. Demonstration of ferromagnetic properties of precipitated manganese oxide after sorption of cobalt salt and addition of NaBH4: c – sample on paper, d – sample on the side surface of a magnet (TU 48-4/531-6-92).

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