ISSN:
0098-1273
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Three loss peaks in the dielectric spectra of thermally oxidized polyethylene at temperatures below 50°K are each apparently associated with specific species of nonvolatile oxidation products involving hydrogen atoms. We report how each is influenced by room-temperature rolling, heat treatment, isotopic substitution, and chemical attack. One, the Vincett-Phillips peak, is susceptible to attack by Cu2+, Fe3+, and HI, and is attributed to a hydroperoxide species. Its rapid and easy determination has promise in the study of polyethylene oxidation. Carson's (higher-frequency) peak is tentatively attributed to an alcohol species and a new (lower-frequency higher-temperature) peak is described but not yet attributed. A few additional observations are made on the loss peaks associated with antioxidants of the substituted phenol type, as reported by Thomas and King.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1978.180161006
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