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Synthesis, characterization, and metal ions adsorption properties of chitosan–calixarenes (I)

✍ Scribed by Hai-Bing Li; Yuan-Yin Chen; Shi-Lan Liu

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
131 KB
Volume
89
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Calixarene‐modified chitosans (CTS–CA‐I and CTS–CA‐II) were first synthesized by the reaction of chitosan (CTS‐NH~2~) with 1,3‐bis‐chloroethoxyethoxy‐2,4‐dihydroxy‐p‐tert‐butylcalix[4]arene (CA‐I) or its benzoyl derivative (CA‐II). Their structures were characterized by infrared and X‐ray diffraction spectroscopy and scanning electron microscopy (SEM). The adsorption of Ni^2+^, Cd^2+^, Cu^2+^, Pd^2+^, Ag^+^, and Hg^2+^ by CTS–CA‐I and CTS–CA‐II was studied and the thermodynamic parameter of two calixarene‐modified chitosans toward Hg^2+^ was deduced. The adsorption properties of CTS–CA‐I and CTS–CA‐II were greatly varied compared with that CTS‐NH~2~, especially with the adsorption capacity toward Ag^+^ and Hg^2+^, because of the presence of the calixarene moiety. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 1139–1144, 2003

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