<![CDATA[Research about preparation and characterization complex of chitosan hydrogel–copper(II) had been done. Chitosan hydrogel was obtained from deacetylation of chitin which was isolated from crab shells. Characterization included determination of N-total, Corganic , deacetylation degree, and FTIR spectroscopy. The results of research showed that obtained chitosan had 7,9571% N-total, 2,767% Corganic, and 71,486% deacetylation degree. FTIR spectrum of chitosan showed the increasing in percentage of transmitant from C=O group and the shifting in wavenumber from 1561,5 to 1563 cm-1 indicated N-H bending. Generally, FTIR spectrum of chitosan hydrogel showed the shifting to higher wavenumbers caused by changing in bond angles of chitosan group. FTIR spectrum of chitosan hydrogel-copper(II) complex showed that absorption regions of N-H group becoming wide and the shifting in wavenumber from 1594,74 to 1542,9 cm-1 whichindicated N-H bending because of copper(II) bonding to N-group of chitosan.]]>
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