Characterization of gelification of chitosan solutions by dynamic light scattering

► The kinetics of chitosan crosslinking by glutaraldehyde can be monitored using DLS data coupled to the KWW equation. ► Gelification time can be characterized as the time at which ICF amplitude catastrophically decreases. ► The gelification time can be characterized as the time at which relaxation rate distribution center reaches its minimum value. ► Gelification time can be characterized as the time at which KWW exponential factor reaches its minimum value. ► KWW equation can be used to indicate the occurrence of non-ergodicity during gelification of chitosan solutions.