Synthesis and copolymerization of azidomethyl-substituted oxetanes: the morphology of statistical block copolymers

Autor:	Vladimir A. Petrov, Nina V. Kuznetsova, Natalia V. Averianova, Aleksei I. Petrov, Timur I. Mukhametshin, P. V. Bulatov, Aidar T. Gubaidullin, Ilgiz Kh. Garaev, A. V. Kostochko, D. B. Vinogradov
Rok vydání:	2017
Předmět:	010405 organic chemistry Organic Chemistry Halogenation Sulfuric acid 010402 general chemistry Oxetane 01 natural sciences Pentaerythritol 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Bromide Polymer chemistry Copolymer Azide
Zdroj:	Chemistry of Heterocyclic Compounds. 53:811-821
ISSN:	1573-8353 0009-3122
DOI:	10.1007/s10593-017-2128-3
Popis:	3,3-Bis(azidomethyl)oxetane and 3-azidomethyl-3-methyloxetane were obtained by bromination of pentaerythritol and metriol with a mixture of hydrobromic, acetic, and sulfuric acids, followed by cyclization in the presence of a phase-transfer catalyst TBAB, with the formation of oxetane ring and replacement of bromide substituents with azide ions. The copolymerization reaction of 3,3-bis-(azidomethyl)oxetane and 3-azidomethyl-3-methyloxetane was performed in the presence of a catalytic system prepared from triisobutylaluminum and water. The methods of small-angle and wide-angle X-ray diffraction analysis were used to determine the amorphous-crystalline and domain structures of the synthesized copolymers. We also present data about conformational and relaxation transitions in these statistical copolymers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9159c93ec9cf67987f7e8686c544c95e https://doi.org/10.1007/s10593-017-2128-3 Zobrazit plný text záznamu Plný text ve formátu PDF