Structural changes occurring in butadiene-nitrile and fluororubbers exposed to γ-irradiation

Autor:	G.G. Gubanova, F.A. Makhlis, V.M. Popova
Rok vydání:	1973
Předmět:	chemistry.chemical_classification Nitrile technology industry and agriculture General Engineering macromolecular substances Polymer chemistry.chemical_compound chemistry Polymer chemistry Copolymer Degradation (geology) Irradiation Hexafluoropropylene Absorption (chemistry) Fluoride
Zdroj:	Polymer Science U.S.S.R.. 15:2250-2259
ISSN:	0032-3950
DOI:	10.1016/0032-3950(73)90091-9
Popis:	A study is made of the effect of the irradiation temperature and the absorbed dose on the crosslinking and degradation of butadiene-nitrile (BNR) and fluororubbers and their vulcanizates in the strained and the free states. In the case of low absorption doses, the irradiation of BNR and their vulcanizates leads to simultaneous rupturing of molecular crosslinks and main chains of the polymers, while in the high dose region the degradation of crosslinks predominates. Irradiation of the fluororubbers (copolymers of vinylidene fluoride and hexafluoropropylene) leads to main chain scission accompanied by the formation of mainly trifunctional crosslinks. The rate of degradation of the strained vulcanizates in higher by one order compared with the undeformed samples.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::977fc2f23071cd9b56d9b3b4628c795a https://doi.org/10.1016/0032-3950(73)90091-9 Zobrazit plný text záznamu