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Determination of phase transitions in Y-shaped, branched alkane, C120H241CH(C195H391)C119H23 using Raman spectroscopy

Authors:

PA Suranga L Wickramarachchi ,

Department of Chemistry, University of Kelaniya, Kelaniya, LK
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Stephen J Spells

Materials and Engineering Research Institute, City Campus, Sheffield Hallam University, GB
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Abstract

Raman spectroscopy has been used to identify solid – solid phase transitions in the symmetrically branched alkane, C120H241CH(C195H391)C119H23  during real-time heating. The vibrational modes in the region from 1700 to 200 cm-1 were studied. A single phase transition was identified at 87°C ± 5°C in this alkane based on the changes in the band intensities. It was revealed that the crystalline bands show subtle changes whereas the disorder bands show the most significant changes at this transition.

Key words: Monodisperse alkanes; vibrational spectroscopy; crystal structures

DOI: 10.4038/josuk.v4i0.2696

J Sci.Univ.Kelaniya 4 (2008): 36-45
DOI: http://doi.org/10.4038/josuk.v4i0.2696
How to Cite: Wickramarachchi, P.S.L. & Spells, S.J., (2011). Determination of phase transitions in Y-shaped, branched alkane, C120H241CH(C195H391)C119H23 using Raman spectroscopy. Journal of Science of the University of Kelaniya Sri Lanka. 4, pp.36–45. DOI: http://doi.org/10.4038/josuk.v4i0.2696
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Published on 17 Jan 2011.
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