“…Applying the theoretical approach of colloid engineering [ 20 , 21 ], the authors in their previous research showed that the process of forming a spatial polymer network (gel) from a colloidal chitosan solution in the presence of GP salt proceeds in two stages. Since the amino groups present in the chitosan chain form non-covalent bonds with anionic phosphate groups, it was found that the aggregation rate of particles is not limited only by the phenomenon of their diffusion (diffusion-limited cluster aggregation (DLCA) mechanism [ 22 , 23 , 24 , 25 ]), but will also depend on the resulting interactions between the amino groups and anionic phosphate groups, so-called reaction-limited cluster aggregation (reaction-limited cluster aggregation (RLCA) mechanism [ 22 , 23 , 24 , 25 ]). In the first stage, the charge of the chitosan polyion is neutralized, leading to the precipitation of chitosan chains from the solution, thus creating aggregation nuclei.…”