Olkhov A.A., Iordanskiy A.L., Ishchenko A.A., Zaikov G.E. Effect of Solvent’s Polarity on the Structure of Polyhydroxybutyrate

EFFECT OF SOLVENT’S POLARITY ON THE STRUCTURE OF POLYHYDROXYBUTYRATE

Anatoliy Aleksandrovich Olkhov

Candidate of Technical Sciences, Associate Professor,

Senior Researcher, Laboratory of Advanced Composite Materials and Technologies,

Plekhanov Russian University of Economics

Stremyannyy Lane, 36, 117997 Moscow, Russian Federation;

Researcher, Institute of Chemical Physics named after N. N. Semenov, Russian Academy of Sciences

This email address is being protected from spambots. You need JavaScript enabled to view it.

Kosygina St., 4, 119991 Moscow, Russian Federation

Aleksey Leonidovich Iordanskiy

Doctor of Chemical Sciences, http://acheterdufrance.com/ Professor,

Head of Laboratory of Diffusion Phenomena in Polymeric Systems,

Institute of Chemical Physics named after N. N. Semenov, Russian Academy of Sciences

This email address is being protected from spambots. You need JavaScript enabled to view it.

Kosygina St., 4, 119991 Moscow, Russian Federation

Anatoliy Aleksandrovich Ishchenko

Doctor of Chemical Sciences, Professor,

Head of Department of Analytical Chemistry,

Lomonosov Moscow State University of Fine Chemical Technologies

This email address is being protected from spambots. You need JavaScript enabled to view it.

Prosp. Vernadskogo, 86, 119571 Moscow, Russian Federation

Gennadiy Efremovich Zaikov

Doctor of Chemical Sciences, Professor, Head of Department of Polymers,

Institute of Biochemical Physics named after N.M. Emanuel, Russian Academy of Sciences

This email address is being protected from spambots. You need JavaScript enabled to view it.

Kosygina St., 4, 119334 Moscow, Russian Federation

Abstract. The authors study the process of making the polymer materials of the required set of service properties using various types of chemical, physical or physico-chemical modifications at the stage of raw materials preparation or in the process of molding products. It is noted that there is a radical change in the structure of the polymer material at various levels of structural organization.

In this regard, there is need to establish the relationship between factors which influence and change the structural parameters of the polymeric material. Establishing such relationships allows to purposefully change the properties of the polymeric system depending on the application area of this product. As a rule, most of the biopolymers of bacterial origin are very sensitive to high temperatures. This is especially important for medical products, for example, matrices for controlled release of drugs because the introduction of drugs into the polymer is carried out mainly through the solution.

The authors found out that with increasing polarity of the solvent and refinement of the crystal structure the decrease in the proportion of the amorphous phase of PHB took place. It is shown that the proportion of defective crystalline phase in the films of PHB is directly proportional to the cohesive energy of the solvent.

Key words: polyhydroxybutyrate, solvent parameters, structure, polarity, amorphous phase.

This work is licensed under a Creative Commons Attribution 4.0 International License.