Research Papers by Zhiping Zhao
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An amphoteric chitosan derivative, containing carboxymethyl (–COOH) groups and amine (–NH2) groups, had been prepared. FT-IR spectra confirmed the presence of γsymCOO (1408 cm–1) and γasCOO (1584 cm–1) on the structural units of the chitosan derivative, and 13C NMR spectra revealed that carboxy meth
Desalination 144 (2002)
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