MECHANISM OF ACETYLENE POLYMERIZATION ON DIFFERENT TYPES OF CATALYSTS- SYNTHESIS OF HIGH STABLE POLYACETYLENE

The poymerization of acetylene with different types of catalysts was i nvestigated. Most of them have been used for this purpose first time. These are new Re catalysts and new class sterically straitened catalys ts. Use of different catalysts has permeated to regulate the ratio bet ween the rate of polymer chain grows and rate of the solid state forma tion. As a result the films of polyacetylene (PA) and PA - polyvinylbu tyral (PVB) blends with 40 - 50% trans form and very low content defec ts were obtained. Spectral parameters of obtained PA sampler. were the same ar. in PA obtained the other methods. However the rate of their oxidation was considerable lower. For example the process of cis-trans isomerization of PA-PVB-thin films could be produced in air atmospher e without oxidation. The most stable films could be kept in chemical l aboratory more then two years without change.