Abstract

Some specific features of polymer synthesis by polycondensation methods are outlined. A tendency toward the use of a wide range of elements in synthesis of heteroorganic polymers by polycondensation is noted. Problems of equilibrium and non-equilibrium polycondensation, associated with reaction mechanism, are discussed. The causes of the appearance of chain units of different nature in polycondensation and its effect on the properties of the polymers are shown. The effect of the functionality of the reactants in non-equilibrium polycondensation is stressed. The influence of the conditions of formation of the macromolecules and of the nature of the catalysts and solvents, on the structure and properties of the polymers is revealed. Some aspects of the rule of non-equivalency of functional groups in the case of poly-functional monomers are pointed out, and the mechanism of action of catalysts and solvents in non-equilibrium polycondensation is discussed.

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