Hydrogen bond and IR spectra of polyurethanes

Autor:	O. M. Kutsenko, N. S. Nedashkovskaya, T. M. Gritsenko, V. A. Khranovskii, L. V. Stepanenko
Rok vydání:	1980
Předmět:	Materials science Hydrogen Hydrogen bond Analytical chemistry Infrared spectroscopy chemistry.chemical_element Condensed Matter Physics chemistry.chemical_compound chemistry Absorption band Molecule Multiplet Spectroscopy Polyurethane
Zdroj:	Journal of Applied Spectroscopy. 33:961-966
ISSN:	1573-8647 0021-9037
DOI:	10.1007/bf00619492
Popis:	In the IR spectra of polyurethanes obtained using aromatic diisocyanates, in many cases a multiplet nature of the carbonyl absorption band is observed. Thus, in the investigation of copolyurethanes by the method of IR spectroscopy [i], we found that in the spectrum of PUIf, produced on the basis of 2,4-toluylene diisocyanate (2,4-TDI) and 1,4-butanediol, two bands are observed in the ~egion of vibrations of the C=O groups bonded by an H-bond, 1665 and 1700 cm -I. The band ~ e appears at 1730 cm -I. With time (after 0.5 yr, the same sample), the band 1665 cm -I is weakened with increasing intensity of the band 1700 cm -:.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ec5fbb2ea43a7f62ecc55e239a5504c2 https://doi.org/10.1007/bf00619492 Zobrazit plný text záznamu Full text from SpringerLink