Synthesis of a magnetoactive compound based on iron(II) sulfate

Khabarov, Yu. G.; Babkin, I. M.; Veshnyakov, V. A.

doi:10.1134/s1070427212060080

Cited by 9 publications

(2 citation statements)

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“…RMS was measured using a Gouy balance mounted on an analytical balance. 49 The particle size of the MF was measured on a HORIBA LB-550 particle size analyzer in scattering light intensity mode. Electron micrographs were obtained on a ZEISS Sigma VP scanning electronic microscope, with an accelerating voltage of 10 kV and an InLens detector.…”

Section: Methodsmentioning

confidence: 99%

“…33 High molecular weight stabilizers, such as synthetic polymers, [34][35][36] including polyvinyl alcohol, 37 polyacrylic acid, 38 polymethacrylic acid, 39 the three-block copolymer PEO-COOH-PEO, 40 the copolymer of acrylic, and p-vinylbenzenesulfonic and vinylsulfonic acids, 41 can be used to stabilize the colloidal particles of MFs. In addition, natural or modi¯ed biopolymers, such as dextran, 42,43 alginic acid, 44 humic acids 45 and lignosulfonates (LS), [46][47][48] including nitrosated LS, 49,50 are used as stabilizers.…”

Section: Introductionmentioning

confidence: 99%

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Using Nitrated Lignosulfonates for the Synthesis of a Water-Based Magnetic Fluid

et al. 2019

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Nitrated lignosulfonates were used to synthesize a water-based magnetic fluid. Lignosulfonates were nitrated by nitric acid under mild conditions and without further purification were used to synthesize a magnetic fluid. Part of the iron(II) were oxidized with an excess of nitric acid, so that the magnetoactive phase under the condensation by action of sodium hydroxide was formed. Optimum conditions for nitration of lignosulfonates and synthesis of a magnetic fluid were experimentally established. The optimum consumption of iron(II) was 1.3–1.5[Formula: see text]g per 1[Formula: see text]g of sodium lignosulfonate. Unlike the initial lignosulfonates, nitrated lignosulfonates have peptizing properties, due to which the precipitate formed during condensation was dispersed to nanoparticles (15–30[Formula: see text]nm). The resulting magnetic fluid had a high magnetic activity and was stable for a long time.

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Section: Methodsmentioning

confidence: 99%