Effect of ionizing radiation on hydrocarbons and polyethylene in their crystalline state

Journal Article · Sat Dec 01 04:00:00 EST 1973 · J. Polym. Sci., Polym. Lett. Ed., v. 11, no. 12, pp. 739-743

DOI:https://doi.org/10.1002/pol.1973.130111202· OSTI ID:4338651

Patel, G N; Keller, A

Polyethylene, dicarboxylic acids, and the paraffin n-C/sub 36/H/sub 74/ were irradiated with /sup 60/Co gamma rays and were studied for cross-linking, double bonds, and chain scission. No cross-links occurred within the paraffinoid lattice up to doses of 600 Mrads. In nonpolymeric hydrocarbon crystals, the cross-links link chains at their ends, and in chain-folded polyethylene they are situated exclusively within the fold surface and may form links either in the fold region of the same molecule or between folds of other molecules. Transvinylene double bonds are uniformly distributed within the crystalline lattice, but there is a reduced concentration of such double bonds within the fold region of polyethylene. There is no chain scission within the paraffinoid lattice and by existing results there is no reason for invoking chain scission, even in the composite amorphous-crystalline system of chain-folded polyethylene. (LK)

• Research Organization: Univ. of Bristol, Eng.
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-024043
• OSTI ID: 4338651
• Journal Information: J. Polym. Sci., Polym. Lett. Ed., v. 11, no. 12, pp. 739-743, Journal Name: J. Polym. Sci., Polym. Lett. Ed., v. 11, no. 12, pp. 739-743; ISSN JPYBA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

*ALKANES-- CHEMICAL RADIATION EFFECTS
*DICARBOXYLIC ACIDS-- CHEMICAL RADIATION EFFECTS
*POLYETHYLENES-- CHEMICAL RADIATION EFFECTS
CROSS-LINKING
CRYSTALS
DOUBLE BONDS
G VALUE
GAMMA RADIATION
IONIZING RADIATIONS
N40300* --Chemistry--Radiation Chemistry