NRCC Guest Researcher. Permanent address: Universite Blaise Pascal, Aubiere Cedex, France.
Gamma-, photo-, and thermally-initiated oxidation of linear low density polyethylene: A quantitative comparison of oxidation products†
Article first published online: 10 MAR 2003
Copyright © 1992 John Wiley & Sons, Inc.
Journal of Polymer Science Part A: Polymer Chemistry
Volume 30, Issue 3, pages 493–500, 15 March 1992
How to Cite
Lacoste, J. and Carlsson, D. J. (1992), Gamma-, photo-, and thermally-initiated oxidation of linear low density polyethylene: A quantitative comparison of oxidation products. J. Polym. Sci. A Polym. Chem., 30: 493–500. doi: 10.1002/pola.1992.080300316
Issued as NRCC #32937.
- Issue published online: 10 MAR 2003
- Article first published online: 10 MAR 2003
- Manuscript Accepted: 23 MAY 1991
- Manuscript Received: 24 AUG 1990
- oxidation products;
The detailed oxidation products from the initiated oxidation of linear low density polyethylene have been compared by the use of infrared spectroscopy combined with chemical derivatization. Oxidized films were treated with NO or SF4 to allow the resolution of the various alcohol and hydroperoxides and of the carbonyl species, respectively. All types of initiation gave very similar products but in varying quantities. In photooxidation, hydroperoxide was clearly shown to approach a photostationary concentration either from below for fresh film or from above for samples that had been pre-oxidized by γ-irradiation, prior to UV exposure. Carboxylic acid groups, the main backbone scission product, dominated in photooxidations, possibly as the result of the further oxidation of sec-hydroperoxide sites.