S. Hirano et al., THE MINERALIZATION OF CO-3(2-) IONS ON CHITIN-METAL OR CHITOSAN-METALCOMPOSITE BEADS IN WATER, Macromolecular symposia, 105, 1996, pp. 149-154
The following dry composite beads (diameter 1.0-1.2 mm) were prepared:
chitin-CaCO3, chitosan -CaCl2, chitosan-CuCl2, partially (N) over bar
-acetylated chitosan-CuCl2, chitosan-CuSO4, chitosan-Fe3O4, chitin-SiO
2. Each of chitosan-CuCl2, chitosan-CuSO4 and chitin-CaCl2 composite b
eads was treated in aqueous K2CO3 at room temperature to afford a mixt
ure of metal carbonates and hydroxides on chitin or chitosan chain.