The Influence of Temperature on 1,3-Butadiene and Styrene Copolymerization Induced by Multicomponent Initiation System
The influence of temperature from 30 to 70 oC on the 1,3-butadiene and styrene copolymerization process in hexane solvent was studied. n -butyllithium, mixture of amine-containing alkali with alkaline-earth metal alcoholates, and 2,2’-ditetrahydrofurylpropane as initiation system were in use. Characteristics of SSBR synthesized samples were also determined. Introducing of amine-containing alkali and alkaline-earth metal alcoholates and 2,2’-ditetrahydrofurylpropane increases the activity of initiation system and the initial rate of copolymerization process. The rise in the copolymerization temperature from 30 to 70° C is accompanied by a multiple increase in the values of the kinetic constants. The decrease of the process temperature is followed by the growth of 1,2- units content in the butadiene part of the copolymer.