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زبان فایل : انگلیسی
نوع فایل : PDF
Addition polymerization initiated by organometallic compounds has in
recent years aroused widespread interest mainly because of the stereospeciflc
character of many of these systems. It soon became apparent that the chain
propagation reaction in these systems differed markedly from that of the wellknown free radical polymerizations in that it involved an orientation of the
incoming monomer instead of a more random reaction. However elucidating
the detailed mechanism of this important step has been difficult owing to lack
of knowledge about the exact structure of the organometallic compound as well
as the heterogeneous nature of most such systems. The available knowledge
of stereoregular polymerization (1) anionic propagation kinetics (13) and
organolithium polymerization (2) has recently been reviewed. Based on
presently available knowledge therefore it is now possible to sketch some
general guide lines toward a better understanding of these phenomena.
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