| abstract |
PROBLEM TO BE SOLVED: To obtain homogeneous polyion complex fine particles comprising a cationic polymer and an anionic polymer and a dispersion thereof. SOLUTION: An aqueous solution of an anionic polymer and an aqueous solution of a cationic polymer are mixed to obtain a mixed aqueous solution, and then the pH of the mixed aqueous solution is changed to change the fine particles of the polyion complex. Disperse. [Selection figure] None |