Delayed and immediate processes in the radiolysis of hydrocarbon polycrystals

Tilquin, Bernard; Tilman, P.; Claes, P.

doi:10.1016/0146-5724(80)90033-3

Cited by 15 publications

(3 citation statements)

References 23 publications

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“…In crystalline short-chain n-alkanes from butane to octane, between 30% -2q), from which q, the average number of cross-links per initial molecule, is obtained. and 50% of dimerization was found to occur immediately, possibly by a non-radical mechanism, at temperatures below 140K [39,103]. This has been deduced from experiments where the irradiated crystals were dissolved in a radical scavenger at temperatures sufficiently low to prevent any combination of trapped radicals before dissolution was completed.…”

Section: Cross-linkingmentioning

confidence: 91%

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Radiation effects in polyethylene and n-alkanes

Ungar

1981

J Mater Sci

138

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The effect of high-energy radiation on n-alkanes and polyethylene (PE) are reviewed. The article includes a description of (a) primary radiation events, formation, spatial distribution and decay of free radicals and radical migration mechanisms, (b) formation of cross-lin ks and other sta ble products, (c) the effects of crystal linity, crystalline modifications and morphology on radiation cross-linking, and (d) radiation-induced changes in the crystal lattice and the destruction of crystallinity at high irradiation doses.An attempt is made to bring together conflicting views on various unsolved problems of the radiation physics and chemistry of these important and much studied substances. Long-chain paraffins are given considerable attention since their radiation behaviour often provides a link between that of PE and its short-chain analogues.

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Section: Cross-linkingmentioning

confidence: 91%

“…Much information on radiotysis of shorter alkanes can be found in books by Topchiev [35] and G~iumann and Hoign6 [36], as well as in more recent articles by G~umann et al [37,38], Tilquin, Tilman and Claes [39], F61diak [40], and references therein.…”

Section: Introductionmentioning

confidence: 99%

Radiation effects in polyethylene and n-alkanes

Ungar

1981

J Mater Sci

138

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“…La contribution de ce mecanisme radicalaire B la formation des PL est fonction de la temperature de la reaction de terminaison radicalaire et de la qualit6 des radicaux; 6 des mecanismes ioniques en cours de radiolyse ( ' ) . La contribution de ce mecanisme radicalaire B la formation des PL est fonction de la temperature de la reaction de terminaison radicalaire et de la qualit6 des radicaux; 6 des mecanismes ioniques en cours de radiolyse ( ' ) .…”

Section: Ltatsunclassified

Produits Lourds Insaturés de la Radiolyse du Diméthyl‐2,3 Butane en Phase Solide III. Processus Ioniques

Tilquin

Bombaertmichielsen

1983

Bulletin des Soc Chimique

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Low Temperature Disproportionation and Combination Reactions of Alkyl Radicals in the Solid State

Tilquin

1982

Bulletin des Soc Chimique

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Bernard TILQUIN U n i v e r s i t y o f Louvain, L a b o r a t o i r e CHAN, B a t i m e n t L a v o i s i e r P l a c e L o u i s P a s t e u r 1, B-1348 Louvain-la-Neuve, Belgium P r e v i o u s work on c y c l o a l k y l r a d i c a l s y s t e m s i s now e x t e n d e d t o t h e s t u d y o f a l k y l r a d i c a l s i n s o l i d s t a t e . The y i e l d s of t h e s e r a d i c a l s t r a p p e d i n s o l i d a l k a n e s exposed t o y -r a y s a t 77 K were e s t i m a t e d by esr meas u r e m e n t s ( 2 ) . Upon h e a t i n g t h e i r r a d i a t e d sample, t h e r e i s no change i n t h e

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Delayed and immediate processes in the radiolysis of hydrocarbon polycrystals

Cited by 15 publications

References 23 publications

Radiation effects in polyethylene and n-alkanes

Radiation effects in polyethylene and n-alkanes

Produits Lourds Insaturés de la Radiolyse du Diméthyl‐2,3 Butane en Phase Solide III. Processus Ioniques

Low Temperature Disproportionation and Combination Reactions of Alkyl Radicals in the Solid State

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