Die Startgeschwindigkeit des Systems Styrol/Maleinsaureanhydrid wurde unter Benutzung eines radioaktiv markierten Initiators (Tracer-Methode) in den Losungsmitteln Acetonitril, Aceton, Tetrahydrofuran bei unterschiedlicher molarer Zusammensetzung der Monomermischung unter Konstanthalten der Gesamtmonomerkonzentration gemessen. Es zeigte sich eine deutliche Abhangigkeit der Startgeschwindigkeit von der Zusammensetzung der Monomermischung. Die kinetische Kettenlange sowie das Konstantenverhaltnis k,/kalP werden diskutiert. Hawbnaa enopocma npu n o n w p u a a y u u cucmeMu cmupon/anzuapua a w u n o s o 8 menornbz H e m e M M e g e m o r 0 H H m q u a COCTaBe MOHOMepHOa CMeCH UO IlOCTORHHOt 061qea KOHqeHTpalJHH MOHOMepOB. Ha6nm;qa~1acb OTWTJIHBaR 3aSHCH-
MOCTb H a t W T b H O t CKOPOCTH IIOJIHMepHBaqHH OT COCTaBa M O H O M e P H O~ CMeCH. 0 6 c y m p~0 T C R A n H H a KHHeTHWCKOa q e n HH COOTHOlJIeHHe KOHCT;\IIT kw/kalP.The initiation rate of the system styrene-maleic acid anhydride The initiation rate of the system styrene-maleic acid anhydride was determined by using a labelled initiator (tracer method) in acetonitrile, acetone and tetrahydrofurane as solvents a t different molar ratios of the monomers and constant overall monomer concentration. The initiation rate was found to depend distinctly on the composition of the monomer mixture. The kinetic chain length and the ratio of the rate constants k,/k,lP are discussed.
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