Pressure-induced phase transitions in palmitic acid: C form

In this article, we report a high‐pressure Raman spectroscopy study of palmitic acid (PA, C form) from ambient pressure up to 21 GPa. The effects of hydrostatic pressure on the vibrational spectrum of PA are reported, and the data show that PA experiences a rich sequence of phase transformations. Th...

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Bibliographic Details
Published in:Journal of Raman spectroscopy 2012-01, Vol.43 (1), p.146-152
Main Authors: de Sousa, F. F., Saraiva, G. D., Freire, P. T. C., Lima Jr, J. A., Alcantara Jr, P., Melo, F. E. A., Mendes Filho, J.
Format: Article
Language:English
Subjects:
conformational changes
high pressure
palmitic acid
phase transition
Raman scattering
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Summary:In this article, we report a high‐pressure Raman spectroscopy study of palmitic acid (PA, C form) from ambient pressure up to 21 GPa. The effects of hydrostatic pressure on the vibrational spectrum of PA are reported, and the data show that PA experiences a rich sequence of phase transformations. These changes in the crystal structure occur gradually as the pressure increases and they are related to the highly flexible crystalline structure. Copyright © 2011 John Wiley & Sons, Ltd. In this article, we report a high‐pressure Raman spectroscopy study of the palmitic acid (PA, C form) from ambient pressure up to 21 GPa. The effects of hydrostatic pressure on the vibrational spectrum of PA are reported, and the data show that PA experiences a rich sequence of phase transformations. These changes in the crystal structure occur gradually as the pressure increases and they are related with the highly flexible crystalline structure.
ISSN:0377-0486
1097-4555
DOI:10.1002/jrs.2980