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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Superabsorbent Hydrogels
verfasst von : Grigoriy Mun, Ibragim Suleimenov, Kinam Park, Hossein Omidian
Erschienen in: Biomedical Applications of Hydrogels Handbook
Verlag: Springer New York
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Abstract
Superabsorbent hydrogels have unique swelling features that are highly attractive for biomedical, pharmaceutical, and industrial applications. The swelling capacity of many hydrogels, however, is very sensitive to the pH and ionic strength of the solution. Acids and bases, as well as salts (monovalent, multivalent) can significantly affect the solution properties of these polymers. Therefore, it is essential to understand the swelling phenomena of hydrogels, such as the forces responsible for the swelling and swelling barriers. Since the swelling rate of hydrogels is basically required for most applications, detailed information with respect to the swelling kinetics in hydrogels is important as well as the theoretical aspects of swelling mechanisms, especially in solutions containing salts.