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Short-time propagator techniques

A fourth method is the dead-end polymerization technique, which allows the simultaneous determination of kd [Catalgil and Baysal, 1987 Reimschuessel and Creasy, 1978 Stickler, 1979]. Dead-end polymerization refers to a polymerization in which the initiator concentration decreases to such a low value that the half-life of the propagating polymer chains approximates that of the initiator. Under such circumstances the polymerization stops short of completion, and one observes a limiting conversion of monomer to polymer at infinite reaction time. Consider a dead-end polymerization initiated by the thermal homolysis of an initiator. Equations 3-28a and 3-32 can be combined and rearranged to yield... [Pg.234]

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See also in sourсe #XX -- [ Pg.249 ]



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