Abstract
Water-soluble chitosan with low molecular weight was prepared by the depolymerization of chitosan with aqueous H2O2 solution. The IR and 1H-NMR studies verify that depolymerization leads to the breakage of 1,4-β-D-glucoside bonds of chitosan. X-ray analysis shows the depolymerization takes place at the surface of the chitosan in crystal region by so called peeling-off process while the amorphous portion is depolymerized by penetrating pattern.
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References
S. Younsook et al.J. Appl. Polym. Sci. 67 (1998) 1515.
R. A. A. Muzzarelli, in “Polymeric Biomaterials,” edited by S. Dumitriu (New York, 1994) p. 179.
L. Ikeda et al.J. Agric. Food Chem. 41 (1993) 431.
H. Irmi M. Tsujikubo and S. Hirano Biosci. Biotechnol. Biochem. 59 (1995) 2111.
K. Sugano et al.Lipids 27 (1988) 187.
J. A. Rupley Biochim. Biophys. Acta 83 (1964) 245.
K. Nagasawa Carbohydr. Res. 18 (1971) 95.
M. V. Kjell et al.Carbohydr. Res. 211 (1991) 17.
N. N. Kabal'Nova et al.J. Appl. Poky. Sci. 81 (2001) 875.
G. G. Allan and M. Peyron Carbohydr. Res. 277 (1995) 257.
S. Tanioka et al.Biosci. Biotech. Biochem. 60 (1996) 2001.
L. B. Chang et al.J. Agric. Food Chem. 49 (2001) 4845.
J. Xu P. M. Stephen and A. G. Richard Macromolecules 29 (1996) 2436.
M. R. Kasaai J. A. Arul and G. Charlet, in Proc. 7th Int. Conf. on Chitin and Chitosan, France, 1997, p. 241.
F. G. Pearson R. H. Marchessault and C. Y. Liang J. Polym. Sci. 43 (1960) 101.
R. A. A. Muzzarelli et al.Carbohydr. Res. 107 (1982) 199.
J. M. Fang R. C. Sun and D. Salisbury Polym. Degrad. Stab. 66 (1999) 423.
S. Kawakishi et al.Agric. Biol. Chem. 41 (1977) 951.
R. J. Samuels J. Polym. Sci., Polym. Phys. Ed. 19 (1981) 1081.
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Tian, F., Liu, Y., Hu, K. et al. The depolymerization mechanism of chitosan by hydrogen peroxide. Journal of Materials Science 38, 4709–4712 (2003). https://doi.org/10.1023/A:1027466716950
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DOI: https://doi.org/10.1023/A:1027466716950