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In the present paper the results regarding the influence of UV-irradiation with 254 nm wavelength
on the molecular weight of chitosan are presented. The concentration of chitosan solution was
0.5%(w/w) in 0.1 M acetic acid. The degree of deacetylation, determined by potentiometric
titration in an acidic solution by alkaline, was 81%. Viscosity-average molecular weight of
chitosan was determined...
The biodegradable blends of chitosan and starch with different component ratios were prepared by casting method. Obtained thin films were UV-irradiated (λ = 254 nm) and changes in chemical structure were monitored using FTIR and UV-Vis spectroscopies. It was found that the chitosanstarch blends were more susceptible to UV irradiation comparing to pure starch specimen. FTIR spectra of blends suggest...
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