Kinetics of Oxyluminescence

Wynne and Wendlandt (142) found a linear relationship between OL and the rate of reaction using 

Chen (151, 159) described a general kinetics equation that was applied to a thermolumiuescence glow curve but could possibly be employed to an OL curve as well. The basic equation is 

Wendlandt (152) described a method for evaluating the kinetics of OL employing a method developed by McCarter (153) for evolved gas detection (EGA). Using the corrected light emission curve, the rate of OL was given by 

The OL E values obtained for selected polymers are listed in Table 9.1. 

It was pointed out by Ashby (136) that in the presence of stabilizers (antioxidants), ihe OL of the polymer was changed. Using polypropylene containing a 1 1 mixture of the stabilizer, 4,4 -thiobis(6-terr-butyl-o-cresol) with dilaurylthiopropionate. he greatly reduced the OL intensity for an initial time interval and the extent of this reduction was determined by the concentration of the stabilizer. When the stabilizer concentration was depleted, the OL returned to its original intensity. This suggested that the intensity of OL is reduced as the rate of oxidation was reduced by the sta- 

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C.H. Hsueh, W.W. Wendlandt, The kinetics of oxyluminescence of selected polymers. Thermochim. Acta 99, 41-43 (1986)... 

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