Accession Number:

AD0632666

Title:

X-IRRADIATION OF NORMAL SATURATED HYDROCARBONS.

Descriptive Note:

Technical rept., 1 Oct 64-30 Sep 64,

Corporate Author:

GENERAL DYNAMICS/FORT WORTH TEX NUCLEAR AEROSPACE RESEARCH FACILITY

Personal Author(s):

Report Date:

1966-05-01

Pagination or Media Count:

34.0

Abstract:

The development of trans-vinylene in X-irradiated octacosane and Marlex 6002 polyethylene films was measured by means of the infrared spectrometer. Initial development of the trans-vinylene in the octacosane films at temperatures of 137K, 229K, and 289K had a G-value of 2.1 plus or minus 0.4 bonds formed per 100 ev, with decay of the trans-vinylene being most rapid at the highest temperature. Hydrogen evolution from X-irradiated films of these same materials was measured by means of the mass spectrometer. The evolution showed a decrease as the temperature of the irradiation was decreased below 194.5K, with practically no hydrogen liberation at liquid-nitrogen temperature. When the cold irradiated films were slowly warmed, they released a burst of hydrogen at approximately 194.5K. The amount of hydrogen liberated in the burst was dependent upon the irradiation temperature and the irradiating time. EPR Electron Paramagnetic Resonance spectra of the free radicals in irradiated Marlex 6002 polyethylene were predominantly of seven lines centered at g 2.003 and spanning 120 gauss. Author

Subject Categories:

  • Radiation and Nuclear Chemistry
  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE