Characterization of graded polyurethane elastomer by FTIR

Autor:	Hua Xing-yan, Zhu Jin-hua, Wen Qing-zhen, Wang Yuan-sheng, Zhao Pei-zhong
Rok vydání:	2008
Předmět:	chemistry.chemical_compound Materials science chemistry Molar ratio Polymer chemistry General Chemistry Fourier transform infrared spectroscopy Composite material Curing (chemistry) Polyurethane elastomer Polyurethane
Zdroj:	Science in China Series B: Chemistry. 51:58-61
ISSN:	1862-2771 1006-9291
DOI:	10.1007/s11426-007-0093-x
Popis:	Polyurethane elastomers with graded structure were prepared in the graded temperature field. The samples were characterized by FTIR technology. The results show that the degree of microphase separation in the samples decreases with the decrease of the curing temperature. As far as the molar ratio of NH2 and NCO is concerned, the sample exhibits better graded morphology when the ratio is 0.95. The transparence of the samples prepared also changes gradually, increasing along the direction, in which temperature decreases.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1c0361633f1b4218dc9001b42a46154a https://doi.org/10.1007/s11426-007-0093-x Zobrazit plný text záznamu Full text from SpringerLink