Idriss Blakey - Simultaneous FTIR Emission Spectroscopy and Chemiluminescence of Oxidizing Polypropylene: Evidence for Alternate Chemiluminescence Mechanisms.

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      Publication Details (including relevant citation   information):

      Blakey, I.; George, G. A.,  Macromolecules 2001, 34 (6),   1873-1880.

      DOI: 10.1021/ma001206n


      The thermal oxidn. of polypropylene was probed, in situ, by a   novel technique that simultaneously monitors chem. induced light   emission (chemiluminescence) and changes in FTIR emission spectra   of an oxidizing sample. The results obtained from this technique   demonstrated that the chemiluminescence intensity (ICL) was   proportional to the accumulation of carbonyl species formed   during oxidn., rather than the rate of oxidn., which is predicted   from application of the steady-state approxn. to classical   chemiluminescence mechanisms assocd. with auto-oxidn. Two   possible mechanisms were proposed to account for the results   obtained. The first mechanism involved energy transfer from a   triplet carbonyl, formed via a classical mechanism, to a more   efficient emitter formed during oxidn. The second possible   mechanism involved reaction of a peroxidic compd. with an oxidn.   product.

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