Mechanism of radiation crosslinking of SKN-26 and its protection with additives

Autor:	N.I. Pak, T.G. Degteva
Rok vydání:	1987
Předmět:	chemistry.chemical_classification Double bond Nitrile Intermolecular force General Engineering Polymer Ring (chemistry) Photochemistry chemistry.chemical_compound chemistry Natural rubber Electron excitation visual_art Polymer chemistry visual_art.visual_art_medium Amine gas treating
Zdroj:	Polymer Science U.S.S.R.. 29:1750-1756
ISSN:	0032-3950
DOI:	10.1016/0032-3950(87)90040-2
Popis:	It is shown that the mechanism of radiation crosslinking of the rubber SKN-26 not containing additives in vacuo at room temperature is chiefly made up of processes of intermolecular cyclization with the participation of the vinyl, trans -vinylene and nitrile groups. The protection of SKN-26 with aromatic secondary amines comes about in two stages. In the first most effective stage there is migration of the polymer “hole” to the double bond present at the α-carbon atom of the naphthyl ring of the amine. The π-bond opens and one of its electrons passes to the “hole” as a result of which the amine attaches to the rubber and arrests the processes of cyclization and crosslinking of SKN-26. At the second stage protection results from the scattering of the energy of electron excitation by the attached additive.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fa41d1f8fe85459350ff5bc6b37e4f0e https://doi.org/10.1016/0032-3950(87)90040-2 Zobrazit plný text záznamu