Accession Number : AD0426974


Title :   GAMMA RADIATION EFFECTS ON ISOPRENOIDS. II. 2,6 DIMETHYLOCTANE AND 2,6-DIMETHYLOCTADIENE-2,6,


Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF


Personal Author(s) : Shelberg,W E


Report Date : 20 Sep 1963


Pagination or Media Count : 26


Abstract : The radiolytic decomposition of 2,6-dimethylo ctadiene-2,6 and 2,6-dimethyloctane, respectively models for rubber and hydro-rubber, was investi gated. Yields of hydrogen gas and hydrocarbons through C5 were determined at low conversions. For both models, hydrogen gas was attributed to abstractions by hot and lesser energetic hydrogen atoms and to hydrogen molecule detachments. Nineteen hydrocarbon products were found for the diene and twenty for the parafin. Yields from the diene are generally smaller than those from the parafin. The formation of hydrocarbon pro ducts from the diene is interpreted by means of radical reactions involving little or no diffu sion. The formation of hydrocarbon products from the paraffin is interpreted by means of radical reactions involving caging as well as free diffusion. (Author)


Descriptors :   RADIATION EFFECTS , RUBBER , DIFFUSION , RADIATION , POLYMERS


Distribution Statement : APPROVED FOR PUBLIC RELEASE