PMSE 276 |
| We have prepared the intermediate hydroxylpropyl chloride of chitosan (CS1). By the reaction of hydroxylpropyl chloride of chitosan and β-cyclodextrins, a novel chitosan grafted with β-cyclodextrins (CC) has been gained. Their structures were characterized by IR and X-ray diffraction, which were in accordance with the designed ones. The apparent grafted amount of β-cyclodextrins was 25.48 μmol•g-1 by UV-9100 ultraviolet-visible spectrophotometer. The influences of initial concentration, adsorption time, pH, and ion strength on adsorption capacity for salicyclic acid were studied. This kind of modified resin has a higher adsorption capacity for salicyclic acid than chitosan itself (CS). The maximium adsorption for salicyclic acid on CC was 55.2% while on CS was 49.1%. CC needed about 180 minute to get adsorption equilibrium. |
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Joint PMSE/POLY Poster Session
6:00 PM-8:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster
Division of Polymeric Materials: Science & Engineering |