Figure 5. Cross-section micrographs of chitosan based films incubated for 30 and 150 days: a,b) chitosan films (CH), c,d) chitosan crosslinked with tannic acid (CHTA), e,f) CH160ºC films and g,h) CHTA160ºC films. Magnification is indicated in the micrographs

From

Physical and Chemical Treatments on Chitosan Matrix to Modify Film Properties and Kinetics of Biodegradation

S. Rivero, M. A. García, A. Pinotti

Journal of Materials Physics and Chemistry. 2013, 1(3), 51-57 doi:10.12691/jmpc-1-3-5