화학공학소재연구정보센터
Korea Polymer Journal, Vol.7, No.5, 321-324, October, 1999
Apparatus for Anionic Polymerization under Inert Gas and Polymerization of Polystyrene
An apparatus for anionic polymerization under inert atmosphere was constructed and tested by polymerizaion of styrene. Polymerizaion of styrene was initiated with sec-butyllithium in cyclohexane solvent at 45℃. During the polymerization, seven aliquots of the reaction mixture were taken out by use of double tipped needle and terminated with 2-propanol at various reaction times. Analyzing the time varying molecular weights of the polystyrenes, it was found that the polymerization rate is first order to the monomer concentration. The rate constant of the polymerization is 0.024/M1/2/s assuming one half order dependence on the concentration of the anionic active center.
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