Перегляд за Автор "Vakuliuk, Polina"

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    Preparation and characterization of polyacrylonitrile membranes with antibacterial properties
    (КПІ ім. Ігоря Сікорського; ТОВ «Українська водна спілка», 2021) Vakuliuk, Polina; Furtat, Iryna; Potvorova, Nadiia; Zabava, Lucia; Sobczuk, Henryk
    A common problem in separation, fractionation and water treatment is the development of methods for modifying industrial PAN membranes to prevent biological contamination, including the formation of biofilm on the surface of the membrane, and prolong their use. We describe the method of formation of polyacrylonitrile membranes with antibacterial properties by addition into the casting polymer solution of antibacterial polymeric compounds: polyhexamethyleneguanidine chloride, oligourethanesemicarbazide with terminal cationic pyridinium chloride groups, and the polyvinylpyrrolidone-iodine complex. We investigated the effect of the addition of antibacterial compounds to the casting solution on the physicochemical, transport and antibacterial properties of the obtained membranes. We show that increasing the concentration of the bactericidal additives in the casting solution to 3% (wt.) leads to a change in the investigated physicochemical characteristics, water flux and membrane rejection of polyethyleneglycol and low molecular weight electrolyte type 2-1 (CaCl2). We found that membranes prepared from the polymer solution with 3% (wt.) of antimicrobial substances are characterized by high antibacterial activity up to 50 days.