Complexation behavior of octenyl succinic anhydride starch with chitosan

This study investigated the complexation behavior of octenyl succinic anhydride (OSA) starch (OSA-S) and chitosan (CS). According to the analysis of the turbidity, ζ-potential, optical micrographs and state diagrams, a pH-induced phase transition occurred due to the modification of the surface charge in biopolymers through ionic group dissociation. The aggregation of biopolymers was then altered to exhibit different complexation states,...