RADIATION EFFECTS ON DIMETHYL-DIPHENYL SILOXANE COPOLYMER. I. PROTECTIVE EFFECT OF PHENYL RADICAL ON THE CROSS-LINKING

Journal Article · Mon Aug 01 04:00:00 EDT 1960 · J. Phys. Soc. Japan

DOI:https://doi.org/10.1143/JPSJ.15.1501· OSTI ID:4165645

Koike, M; Danno, A

The radiation effects both of polydimethyl siloxane and dimethyldiphenyl siloxane copolymers were studied by the use of gamma rays of cobalt-60 in order to estimate the protective effect due to phenyl radical against the radiationinduced cross linking. The viscosity of irradiated sample increased with the absorbed dose and finally the sample became gel. The efficiency of cross linking of copolymers is remarkably reduced with increasing concentration of diphenyl silonane. The minimum absorbed dose for gel formation, the efficiencies of cross linking per monomer unlt were obtained as a function of the concentration of phenyl radical. It is estimated that the protective effect of diphenyl siloxane may extend over five or six neighboring monomers of dimethyl siloxane. (auth)

• Research Organization: Japan Atomic Energy Research Inst., Tokyo
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-022928
• OSTI ID: 4165645
• Journal Information: J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 15
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ALKENES
CHEMISTRY
COBALT 60
CONFIGURATION
EFFICIENCY
GAMMA RADIATION
METHYL RADICALS
METHYLENE
POLYMERS
RADIATION DOSES
RADIATION EFFECTS
VISCOSITY