Abstract
AbstractThe basic ideas of Figini and Schulz on inadequate mixing have been further developed using a laminar mixing model. It was found that the derived equations explained semiquantitatively the initiation phenomena as well as the molecular weight distributions found in anionic polymerization, while the “expanding drop” hypothesis of Figini and Schulz failed. When the theory of slow initiation was examined, no agreement with experimental data was observed; in fact, inadequate mixing was able to explain all the phenomena previously attributed to slow initiation. The rate of initiation is probably greater than the rate of polymerization with an initiator such as sodium naphthalene. Ways to obtain monodisperse polymer were discussed; polymerization in a solvent such as dioxane seemed to be the best solution.
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