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- W2104128567 abstract "Abstract Chitosan gel particles were prepared by the suspension evaporation method, and their fundamental adsorption properties have been investigated. The chitosan gel particles were spherical in shape, 150 μm in diameter, and had large macropores, about 2 μm in diameter, formed by the polymer networks. The adsorption properties were evaluated from an interaction viewpoint using anionic surfactants having various numbers of carbon atoms, ethylbenzenesulfonate (EBS), octylbenzenesulfonate (OBS), and dodecylbenzenesulfonate (DBS). The pK a values of the amino groups within the gel particles were remarkably small compared with those of chitosan polymer. EBS, with its short hydrophobic chain, was adsorbed mainly by an electrostatic interaction in the pH range 3.0 to 6.0, where the amino groups were dissociated. On the contrary, the adsorption of OBS and DBS, with their relatively long hydrophobic chains, took place via an electrostatic interaction in the pH range 3.0 to 5.0, and then by a hydrophobic interaction in the presence of an electrostatic interaction in the pH range 5.0 to 8.0. We conclude that an electrostatic interaction is essential, even for the adsorption of surfactants having strong hydrophobic interactions. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 901–906, 2002" @default.
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- W2104128567 date "2002-08-14" @default.
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- W2104128567 title "Fundamental adsorption properties of chitosan gel particles prepared by suspension evaporation method" @default.
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- W2104128567 doi "https://doi.org/10.1002/app.11001" @default.
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