Ñêà÷àòü ïîëíóþ âåðñèþ ñòàòüè (â PDF ôîðìàòå)
V. V. Turov, T. V. Krupska, A. P. Golovan’, L. S. Andriyko, M. D. Tsapko, G. V. Ostrovska, O. A. Kalmykova, and M. T. Kartel’
«Influence of Silica on Hydratability of the Grinded Flowers of a Hibiscus Sabdariffa in Neutral and Acidic Mediums»
643–660 (2016)
PACS numbers: 81.07.-b, 82.39.Rt, 82.56.-b, 82.70.Uv, 87.64.kj, 87.80.Lg, 88.20.dh
The water state in milled hibiscus flowers and its composite systems with nanosilicas having various bulk density (Ñd), namely, initial (Ñd???50 mg/ml) and hydrodensified (Ñd???250 mg/ml) ones, are investigated by low-temperature 1H NMR method. As revealed, the nanosilica forms a continuous film on the surface of plant material particles, which has a significant impact on their hydratability. As shown for composite systems in a hydrophobic medium, a water binding energy increases due to enhancing the interaction energy of plant components with water that is induced by nanosilica. The effect of hydrochloric acid on the composite is studied, and as shown, the solvation energy of acid by interface water is less than in composite systems in comparison with the individual components.
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