Modified titanium-magnesium nanocatalysts in the polymerization of isoprene

The polymerization of isoprene on titanium-magnesium nanocatalysts modified with electron-donor compounds based on organic phosphines and sulfides has been studied. It was shown that the catalyst modification makes it possible to increase the content of trans-1,4 units in polyisoprene up to 97% (acc...

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Published inPolymer science. Series B Vol. 55; no. 7-8; pp. 453 - 459
Main Authors Smetannikov, O. V., Tavtorkin, A. N., Nifant’ev, I. E., Chinova, M. S., Gavrilenko, I. F.
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.07.2013
Subjects
Catalysis
Catalysts
Chemistry
Chemistry and Materials Science
Polymer Sciences
Polymer Science Series
Insoluble Fraction
Carbon Disulfide
Nanocatalysts
Isoprene
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Summary:The polymerization of isoprene on titanium-magnesium nanocatalysts modified with electron-donor compounds based on organic phosphines and sulfides has been studied. It was shown that the catalyst modification makes it possible to increase the content of trans-1,4 units in polyisoprene up to 97% (according to the data of 1 H NMR spectra). In the case of a catalyst modified with tributylphosphine, the effects of the phosphorus-to-titanium ratio on the polymerization kinetics, on the microstructure of trans -1,4-polyisoprene, and on the molecular mass of the polymer have been estimated.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1560-0904
1555-6123
DOI:10.1134/S1560090413070051