Abstract
Polyisoprenes synthesized on titanium–magnesium catalysts were studied by 1H and 13C NMR spectroscopy (Larmor’s frequency for protons 700 MHz). The problems concerning the accuracy of determining the microstructure of polyisoprenes with high content of trans units are discussed. As demonstrated for a series of samples with varied configurational and isomeric composition, the cis and trans units are distributed in the macromolecules in the block (continuous) fashion, whereas the 3,4-units are distributed randomly.
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