Fourier Transform Infrared Study on the Melting Phase Transition of Octadecanoic Acid |
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| Authors: | Jiang Yutao Tian Yongchi Liang Yingqiu |
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| Affiliation: | Institute of Theoretical Chemistry, Jilin University, Changchun |
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| Abstract: | Fourier transform Infrared (FT-IR) spectroscopy was used to study the melting phase transition of anhydrous octadecanoic acid. The phase transition occurs at 69℃(Tc). In solid phase, the alkyl chains take the all-trans zigzag conformation and the CB-Ca= 0 group adopts trans configuration in the dimers. In liquid state, the alkyl chains convert to gauche conformation and the CB-Ca= 0 to cis configuration. |
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| Keywords: | FT-IR Phase transition Octadecanoic acid |
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