Sulfoethylated polyethylenimine: synthesis in gel and sorption properties

• Published in: Russian chemical bulletin 2019-06, Vol.68 (6), p.1252-1256
• Main Authors: Kapitanova, E. I., Zemlyakova, E. O., Pestov, A. V., Sinelshchikova, A. R., Petrova, Yu. S., Neudachina, L. K.
• Format: Article
• Language: English
• Subjects: Alkaline earth metals; Ammonia; Buffer solutions; Chemical analysis; Chemical synthesis; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Chitosan; Feature extraction; Full Article; Infrared analysis; Infrared spectroscopy; Inorganic Chemistry; NMR spectroscopy; Organic Chemistry; Polyethyleneimine; Selectivity; Sodium vinyl sulfonate; Sorbents; Sorption; Spectrum analysis; Transition metals
• ISSN: 1066-5285; 1573-9171
• DOI: 10.1007/s11172-019-2549-5

Using the gel synthesis approach of polymer-analogous transformations, N -sulfoethylation of polyethylenimine was carried out by treating the polymer with sodium vinyl sulfonate. The compositions and structures of the products were characterized by elemental analysis, FT-IR spectroscopy, and 1 H NMR spectroscopy. At pH 3.0–4.5 sulfoethylated polyethylenimine can selectively extract Ag I and Cu II from an ammonia—acetate buffer solution in the presence of a series of transition and alkaline-earth metals. At pH > 6.5 the sorbent can be used for the group extraction of a number of transition metal ions. The structural feature of the obtained derivative eliminates the selectivity of sorption of Ag I ions compared to Cu II ions, which has previously been revealed for the sulfoethylated derivatives of chitosan and polyaminostyrene.