An NMR study of the structure and molecular characteristics of polyether block copolymers based on propylene oxide and ethylene oxide

Autor:	D. Kh. Safin, N. Makhiyanov
Rok vydání:	2006
Předmět:	Polymers and Plastics Ethylene oxide Chemistry Oxide Nuclear magnetic resonance spectroscopy Carbon-13 NMR Catalysis chemistry.chemical_compound Monomer Polymer chemistry Materials Chemistry Ceramics and Composites Copolymer Propylene oxide
Zdroj:	Polymer Science Series B. 48:37-45
ISSN:	1555-6123 1560-0904
Popis:	The structure of propylene oxide-ethylene oxide block copolymers prepared with the use of glycerol as an initiator and potassium monoglycerate as a catalyst was studied by NMR spectroscopy. The relative amounts of oxypropylene and oxyethylene monomer units, the functionality-type distribution, the number-average molecular mass, and the ratio between primary and secondary terminal hydroxyl groups were determined. The applicability of 1H and 13C NMR techniques to characterization of these copolymers is discussed. The obtained NMR data are compared with results obtained by other techniques.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9773af0fd06e6c769fdf4af341f9b20a https://doi.org/10.1134/s1560090406010088 Zobrazit plný text záznamu Full text from SpringerLink