Crosslinked chitosan—preparation and characterization

Chitosan undergoes radical-induced depolymerization in the presence of potassium persulfate at 60 °C, leading to extensive crosslinking of the fragmented chains on subsequent cooling at 4 °C. As a result, a possible conformational change leading to higher crystallinity, as evidenced by IR, X-ray and 13C NMR was observed.

Graphical abstractChitosan undergoes radical-induced depolymerization in the presence of potassium persulfate at 60 °C, leading to extensive crosslinking of the fragmented chains upon subsequent cooling at 4 °C.Figure optionsDownload full-size imageDownload as PowerPoint slide