Spectral sensitivity of chitosan photodegradation

作者：Anthony L. Andrady, Ayako Torikai, Takahiro Kobatake · 发表于：Journal of Applied Polymer Science · 年份：1996 · DOI：10.1002/(sici)1097-4628(19961128)62:9<1465::aid-app16>3.0.co;2-y · 被引用次数：90 · 研究领域：Spectroscopy and Chemometric Analyses、Water Quality Monitoring and Analysis

The wavelength sensitivity of photodegradation of solvent-cast chitosan films exposed to monochromatic UV-visible radiation is reported. Measurements were made of changes in absorption spectra, both in the UV-visible region and in the infrared region, as well as changes in dilute solution viscosity of samples, on irradiation at selected wavelengths. Action spectra are reported for these processes. A mechanism of photodegradation based on changes in Fourier transform infrared (FTIR) spectra of irradiated chitosan is presented. © 1996 John Wiley & Sons, Inc.