Abstract
A MECHANISM has been recently proposed1 to account for the behaviour of polypropylene on irradiation, in which the formation of a cross-link between molecules involves reaction between an activated centre in the polymer and a chain fragment containing a vinylidene double bond. This suggests that the cross-linking induced by radiation would be enhanced by the incorporation of unsaturated additives into this polymer. Considerable enhancement of cross-linking has been claimed to occur in the irradiation of ‘solid solutions’ of polyvinyl chloride in di- and tri-allyl esters2.
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References
Black, R. M., and Lyons, B. J., Proc. Roy. Soc., A, 253, 322 (1959).
Pinner, S. H., Nature, 183, 1108 (1959).
Bovey, F. A., “The Effects of Ionizing Radiation on Natural and Synthetic High Polymers” (Interscience Pub., New York, 1958).
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LYONS, B. Effect of High-Energy Radiation on Mixtures of Vinyl or Related Polymers with Unsaturated Compounds. Nature 185, 604–606 (1960). https://doi.org/10.1038/185604b0
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DOI: https://doi.org/10.1038/185604b0
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