Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5204234 | Polymer Degradation and Stability | 2007 | 9 Pages |
Abstract
Thermal chemiluminescence (TCL) from the fibrous proteins wool and feather keratin, silk fibroin and Type I collagen is reported for the first time. The proteins all emit TCL when heated in the atmosphere of O2 or N2 in the range 40-220 °C. Plotting non-isothermal CL data in O2 in Arrhenius format showed an increase in the activation energy at temperatures in the range 129-161 °C for each protein. This may indicate that a different free radical oxidation process operates when the mobility of the amorphous phase of the protein is increased above its Tg. Wool, silk and collagen exhibited a luminescence peak at 130 °C (with feather keratin at 145 °C) during non-isothermal CL experiments in N2, similar to that observed in many synthetic polymers and characteristic of polymer hydroperoxides.
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Keith R. Millington, George Maurdev, Michael J. Jones,