gamma. radiolysis of polyethylene grafted with sytrene. [Gamma rays]

Journal Article · Mon Jun 01 04:00:00 EDT 1981 · J. Polym. Sci., Polym. Chem. Ed.; (United States)

DOI:https://doi.org/10.1002/pol.1981.170190625· OSTI ID:6343163

Mitsui, H; Shimizu, Y

..gamma.. radiolysis of polyethylene grafted with styrene of 0-76 wt % was carried out at 30-100/sup 0/C in vacuo with a dose rate of 6.35 x 10/sup 5/ rad/hr. The formation of hydrogen and trans-vinylene unsaturation decreased as the content of styrene unit in polymer increased and the rate of formulation was described by zero-order formation kinetics with respect to each concentration combined with first-order disappearance. The gel fraction changed with the content of styrene unit according to irradation time and temperature. The gel data were evaluated by using the Charlesby-Pinner equation. Kinetic analysis showed that in ..gamma.. radiolysis of polyethylene grafted with styrene the formation of hydrogen is somewhat retarded, the crosslinking and main chain scission are accelerated, and the disappearance of hydrogen and formation and disappearance of trans-vinylene unsaturation are almost entirely unaffected. On the basis of these results the reactions induced by ..gamma.. rays in graft polymer were discussed in connection with the reaction mechanisms of the ..gamma.. radiolyses of polyethylene and polystyrene.

• Research Organization: Japan Atomic Energy Research Establishment, Gunma
• OSTI ID: 6343163
• Journal Information: J. Polym. Sci., Polym. Chem. Ed.; (United States), Journal Name: J. Polym. Sci., Polym. Chem. Ed.; (United States) Vol. 19:6; ISSN JPLCA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360406* -- Materials-- Polymers & Plastics-- Radiation Effects-- (-1987)
AROMATICS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CROSS-LINKING
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELEMENTS
GAMMA RADIATION
GRAFT POLYMERS
HYDROCARBONS
HYDROGEN
IONIZING RADIATIONS
KINETICS
MEDIUM TEMPERATURE
NONMETALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYETHYLENES
POLYMERIZATION
POLYMERS
POLYOLEFINS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOLYSIS
REACTION KINETICS
STYRENE