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December 2017 (published: 25.12.2017)
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Synthesis and properties of Biostim protein filler based acrylic composites
Marina V. Baidakova , Sitnikova Vera E, Uspenskaya Maya Valerievna, Kremenevskaya M.I., Sosnina O.A., Lebedeva T.V.
The purpose of the study was to develop methods for the synthesis of composite materials filled with protein substances, obtained by deep processing by-products of cattle and having the properties of growth promoters and development of plants. The methods of preparation of the hydrogel composites filled with active material are analyzed. Acrylic composite materials with different concentrations of Biostim protein filler (0.5; 1.0; 1.5; 2, and 5 wt.%) were obtained by the method of free radical polymerization in aqueous medium with different stirring speed (1200 rpm and 6000 rpm). The dependenceof the influence of stirring speed and concentration of filler on the properties of the final product is determined. It is revealed experimentally that with increasing concentration of filler materials synthesized at the stirring speed of 1200 rpm increased their sorption properties. Thesample with filler concentration of 5 wt. % synthesized with thestirring speed of 1200 rpm is shown to havethe best swelling properties in distilled water (up to 700 g/g) comparedwith the samples synthesized at highermixing speeds. The method of IR spectroscopy was used to analyze the chemical structure of the hydrogels filled with the composite. The use of polymeric protein-acrylic composites with concentration of active substance in theamount of 5 wt.% is provednot only to improve physicochemical properties of soil, but also to obtain substances withpre-specified composition.
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Keywords: high-molecular compounds; plant nutrition; acrylic composite; protein hydrolysate; methods of synthesis; foodstuff
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