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Synthesis, characterization, and adsorption properties of chitosan azacrown ethers bearing hydroxyl group
Author(s) -
Yang Zhikuan,
Yang Yuan
Publication year - 2001
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1612
Subject(s) - chitosan , selectivity , chemistry , adsorption , polymer chemistry , organic chemistry , catalysis
Two new chitosan azacrown ethers bearing hydroxyl groups (CTS‐DH and CTS‐DO) were synthesized by the reaction of 3‐hydroxyl‐1,5‐diaza‐cycloheptane and 3‐hydroxyl‐1,5‐diaza‐cyclooctane with epoxy‐activated chitosan. Their structures were characterized by elemental analysis, infrared spectra analysis, and X‐ray diffraction analysis. The adsorption and selectivity properties of the hydroxyl azacrown ethers chitosan derivatives for Ag + , Cr 3+ , Cd 2+ , and Pb 2+ were also investigated. The experimental results showed that the two novel chitosan azacrown ethers have good adsorption capacity for Ag + , and also showed that the grafted chitosan azacrown ethers have high selectivity for the adsorption of Ag + in the presence of Pb 2+ and Cd 2+ . The selectivity coefficients of CTS‐DH and CTS‐DO were K Ag + /Pb 2+= 21, K Ag + /Cd 2+= 42, K Ag + /Pb 2+= 20.5, K Ag + /Cd 2+= 41, respectively. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 1793–1798, 2001