ABSTRACT: 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.
Key words: chitin, chitosan
hydrogel–copper(II)
Penulis: Risfidian Mohadi,
Nurlisa Hidayati, Melany N.R
Kode Jurnal: jpkimiadd070020
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