HOMOGENEOUS ZIEGLER-NATTA POLYMERIZATION - A KINETIC APPROACH .2. TRANSIENT-STATE KINETICS

An integrated view is presented of several possible mechanisms applica ble to the interpretation of homogeneous Ziegler-Natta polymerisation. In this paper, the transient aspects related to the kinetics of Ziegl er-Natta polymerisation are investigated. Extensive data are used to c onstruct kinetic profiles (r(M) vs. t) from a theoretical approach. Sp ecial attention is given to the duration of the transient period as a function of the different kinetic parameters. The kinetic models devel oped are fitted to experimental data, either directly obtained by the authors or published in the literature. These general models have a br oad range of application.