Abstract
Far-infrared spectra in the region 25–500 cm −1 were obtained for glycerol and triacetin (glycerol triacetate) at temperatures from 253 to 323 K. Far-infrared spectra of glycerol look more complicated in comparison with spectra of triacetin due to the hydrogen bonding. Band fitting performed for the frequency range 25–250 cm −1 shows that four bands have contributed to spectra of glycerol and triacetin in this region. The experimental results obtained for glycerol are in good agreement with normal mode analyses performed recently for crystalline glycerol [E.J. Bermejo, A. Criado, A. de Andress, E. Enciso, H. Schober, Phys. Rev. B 53 (1996) 5259.] and for glycerol in the liquid state [T. Uchino, T. Yoko, Science 273 (1996) 480.]. The far-infrared result are compared to the low-frequency Raman spectra of the two liquids. The difference in temperature behaviour revealed from these two kind of spectra is explained on the basis of different temperature contribution of relaxational and vibrational processes to the low-frequency vibrational spectra.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
