ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Atactic polypropylene was irradiated in vacuo, in O2, and in Cl2 with 60Co γ-rays, and changes in polymer structure were investigated by means of IR and ESR measurements of the irradiated polymer and by mass spectrometry of gaseous products. The irradiation in vacuo mainly produced H2 with small amounts of lower hydrocarbons (C1 - C3). As a radical product, only an alkyl radical was observed. The increase in IR absorption at 886 cm-1 indicated the formation of vinylidene unsaturation. The irradiation in O2 produced oxygenated products such as CO, CO2, and H2O with a reduced amount of H2. In the irradiation in Cl2, HCI was a main gaseous product. The existence of C—Cl bonds and a small amount of polyenyl groups in the irradiated polymer indicated that the radiation-induced chlorination of APP was partly followed by elimination of HCl through a zip mechanism.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1979.021800808
