Abstract
Polyvinyl alochol(PVA) physiological saline gel was prepared using physiological saline solution of the polymer by freezing and thawing method. The influences of the concentration of PVA, freezing and thawing cycle times and solvent swelling media on the swelling properties of PVA saline gel were investigated. The result show that the electrolytical ions have great effect on the swelling behavior of PVA saline gel. The equilibrium swelling ratio of PVA saline gel in aqueous swelling media is larger than that in saline swelling media. Also, the equilibrium swelling ratios of PVA saline gel in aqueous and in saline media decrease with the increase of gel concentration and the increase of freezing and thawing cycle times. The decreasing speed of equilibrium swelling ratio with the increase of freezing and thawing cycle times of PVA gel in distilled water is faster than that in physiological saline. The swelling kinetic equation can sufficiently describe the swelling behavior of PVA physiological saline gel.
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Foundation item: Project(50575106) supported by the National Natural Science Foundation of China
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Pan, Ys., Xiong, Ds. & Ma, Ry. Preparation and swelling behavior of polyvinyl alcohol physiological saline gel. J Cent. South Univ. Technol. 13, 27–31 (2006). https://doi.org/10.1007/s11771-006-0101-x
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DOI: https://doi.org/10.1007/s11771-006-0101-x