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

摘要

The radiolytlc decomposition of 2,6-dimethyoetalene-2,6 and 2,6-dimethyloctane, respectively models for rubber and hydro-rubber, was investigated. 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 paraffin. Yields from the diene are generally smaller than those from the paraffin. The formation of hydrocarbon products from the diene is interpreted by means of radical reactions involving little or no diffusion. The formation of hydrocarbon products from the paraffin is interpreted by means of radical reactions involving caging as well as free diffusion.