Synthesis and Molecular-Weight Characteristics of N-Oxidized Copolymers of N-Vinylpyrrolidone and 2-Methyl-5-Vinylpyridine

Autor:	E. V. Vorfolomeeva, D. V. Vasil’eva, A. V. Panov, E. S. Zhavoronok, Yu. S. Efimov, S. A. Kedik, G. V. Zatonskii, M. S. Starchenkova
Rok vydání:	2015
Předmět:	Pharmacology chemistry.chemical_compound Ultraviolet visible spectroscopy chemistry Peracetic acid Drug Discovery Polymer chemistry N-Vinylpyrrolidone Copolymer Carbon-13 NMR Kinetic rate constant 2-methyl-5-vinylpyridine Uv spectrophotometry
Zdroj:	Pharmaceutical Chemistry Journal. 49:554-558
ISSN:	1573-9031 0091-150X
DOI:	10.1007/s11094-015-1326-5
Popis:	Aseries of N-oxides of N-vinylpyrrolidone and 2-methyl-5-vinylpyridine copolymers with various degrees of oxidation were prepared via oxidation of the copolymers by peracetic acid. The N-oxidation kinetic rate constants were calculated using UV spectrophotometry. The temperature dependence of the limiting N-oxidation was determined. The molecular-weight characteristics of the N-oxidized copolymers were established using 13C NMR methods. An approach based on direct UV spectrophotometry was proposed for practical monitoring of the reaction completion (degree of conversion).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::05998660f264a9dd8b9ca7b1bda0fd62 https://doi.org/10.1007/s11094-015-1326-5 Zobrazit plný text záznamu Plný text ve formátu PDF