| Abstract
| - The kinetic theories on the polymerization rate and polydispersity in atom transfer radicalpolymerization (ATRP) were, for the first time, quantitatively tested by experiments for the polymerizationof styrene at 110 °C with a polystyryl bromide/Cu(I)Br/ligand initiating system in the presence or absenceof the conventional radical initiator 2,2‘-azobis(2,2,4-trimethylpentane) (VR110). The polymerization ratein the VR110-free system conformed to the theory on an absolute scale, showing a 2/3-order time dependenceof conversion index. The addition of VR110 increased the polymerization rate to reach a stationary state.Experimental results on polydispersity also quantitatively agreed with the theories in both the presenceand absence of VR110, exhibiting the theoretically predicted time evolutions of polydispersity indexcharacterized by the prefactors 1/2 and 3/8, respectively.
|
