Polymerization of butadiene and isoprene in the presence of a titanium catalytic system under ultrasonic irradiation

The ultrasonic irradiation of the reaction mixture during its formation in the polymerization of butadiene and isoprene with a microheterogeneous titanium catalytic system causes acceleration of the process. In this case, the multicenter titanium catalytic system is transformed into a quasi-single-c...

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Bibliographic Details
Published in:Polymer science. Series B 2011-08, Vol.53 (7-8), p.375-384
Main Authors: Mingaleev, V. Z., Zakharov, V. P., Ionova, I. A., Zakharova, A. V., Monakov, Yu. B.
Format: Article
Language:English
Subjects:
Butadiene
Catalysis
Catalysts
Chemistry
Chemistry and Materials Science
Dienes
Irradiation
Isoprene
Polymer Sciences
Polymerization
Titanium
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Summary:The ultrasonic irradiation of the reaction mixture during its formation in the polymerization of butadiene and isoprene with a microheterogeneous titanium catalytic system causes acceleration of the process. In this case, the multicenter titanium catalytic system is transformed into a quasi-single-center system and the type of operating center depends on the nature of a polymerizing diene. During the polymerization of butadiene, this effect leads to an increase in the amount of trans-1,4-units and to a decrease in the average molecular masses. In the case of isoprene, the resulting polymer contains a higher amount of cis-1,4-units.
ISSN:1560-0904
1555-6123
DOI:10.1134/S1560090411070062