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Background. Research is underway to obtain three-component interpolyelectrolyte complexes (IPECs) of chitosan with polyanions and polyampholytes. The presence of a surface charge in the macromolecule of three-component IPECs can effectively immobilize oppositely charged particles. Purpose: obtaining stable three-component interpolyelectrolyte complexes based on Bombyxmori chitosan and studying their physicochemical properties. Methodology. We used conductometric titration, DLS, Litesizer and other research methods. Originality.Three-component interpolyelectrolyte complexes based on natural macromolecules have been obtained and their hydrodynamic parameters have been studied. Findings.The compositions and hydrodynamic dimensions of three-component complexes of chitosan were revealed. It has been established that at pH 6.3 binary complexes of chitosan/Na-CMC interact with collagen at 1:0.75:0.01 wt. ratio, where the sum of the surface charge of the complex is equal to zero. The hydrodynamic particle sizes of ternary IPECs vary from 98 to 132 nm. [ABSTRACT FROM AUTHOR]

Background. Currently huge amount of work has been carried out to obtain interpolyelectrolyte complexes (IPEC) of chitosan with natural and synthetic polyanions. Presence of charge in the macromolecule on surface of IPEC particles could effectively immobilize oppositely charged of particles. In this regard, polyelectrolyte complexes are used for wastewater purification, targeted drug delivery, for the construction of different biomaterials, as well as biologically active and biodegradabled of agricultural preparations. At the present, time study of fundamental principles of obtaining IPEC of natural polyelectrolytes and creation of preparations based on nosshown scientific and applied interest. Purpose. The aimof study is obtaining thermodynamically stable interpolyelectrolyte complexes based on Bombyx mori chitosan and study their ability to bind with soil minerals. Methodology. At this work are used turbidimetric, potentiometric and conductometric titration, laser microelectrophoresis, elemental analysis, etc. Originality. For the first time, stoichiometric and non-stoichiometric Bombyx mori chitosan complexes were obtained and hoyghown the possibility of their applicotions as a structurant for soil erosion. Findings. Obtained IPEC chitosan Bombyx mori with macromolecules of Na-CMC. The composition and hydrodynamic dimensions of the complexes are revealed. It was established that at pH = 6.3 of, chitosan and Na-CMC interacted at 1: 0.34 molar ratio. The particle size of IPEC in solution ranges from 80 to 1000 nm and has ability to bind with soil minerals, forming strong crusts. It hos shown that polyelectrolyte crusts are durable to washing and mechanical stress, which in will be applied in soil erosion. [ABSTRACT FROM AUTHOR]