DSC studies of neohexanol and its isomers |
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| Authors: | E Juszyńska P M Zieliński J Ściesiński |
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| Institution: | The Henryk Niewodniczański Institute of Nuclear Physics , Polish Academy of Sciences, Radzikowskiego 152, 31–342 Kraków, Poland |
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| Abstract: | DSC method has been used to establish a solid state polymorphism of four dimethyl butanols having CH3 side groups: 2,2-dimethyl-1-butanol CH3CH2C(CH3)2CH2OH)], 3,3-dimethyl-1-butanol (CH3)3CCH2CH2OH], 3,3-dimethyl-2-butanol (CH3)3CCH(OH)CH3] and 2,3-dimethyl-2-butanol (CH3)2CHCOH(CH3)2]. Three isomers appear to be glass formers. Glass of liquid phase has been observed for 3,3-DM-1-B while glass of plastic phase for 2,2-DM-1-B and 3,3-DM-2-B. For 2,3-DM-2-B on cooling only crystallization has been found. Influence of location of the OH group in molecule on polymorphism is discussed. IR-spectra, measured in the liquid phase, have revealed hydrogen bonds in all isomers. |
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| Keywords: | Neohexanol Dimethyl butanols Phase transitions Glass transition |
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