Studies on the pH‐dependent swelling properties and morphologies of chitosan/calcium‐alginate complexed beads
1997; Wiley; Volume: 198; Issue: 9 Linguagem: Inglês
10.1002/macp.1997.021980925
ISSN1521-3935
AutoresOk‐Sub Lee, Byung‐Jo Ha, Soo‐Nam Park, Jeong Yong Lee,
Tópico(s)Innovative Microfluidic and Catalytic Techniques Innovation
ResumoAbstract 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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