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Studies on the pH-dependent swelling properties and morphologies of chitosan/calcium-alginate complexed beads by Ok-Sub Lee; Byung-Jo Ha; Soo-Nam Park; Yoon-Sik Lee is a Materials Science article available to read on EtoBox.

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## Abstract Chitosan/calcium‐alginate beads were prepared by a coacervation method in aqueous medium. Their swelling properties and morphologies were studied. Complexed beads with a mean diameter of 500 μm were obtained by dropwise addition of a sodium alginate solution into a chitosan‐calcium chloride solution. From scanning electron microscopic studies, we observed that chitosan modifies the morphology of calcium‐alginate beads. The swelling properties of chitosan/calcium‐alginate beads are different from those of calcium‐alginate beads. In the case of the calcium‐alginate beads, the swelling volume increases as the pH of the medium increases. However, chitosan/calcium‐alginate beads show a maximum swelling volume at pH 9.0.

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Author

Ok-Sub Lee; Byung-Jo Ha; Soo-Nam Park; Yoon-Sik Lee

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 1022-1352)

Published

1997

Language

EN

Field

Materials Science (Physical Sciences)