Solid State Polymorphism and Dynamics of 2,2-Dimethylbutan-1-ol as Studied by Adiabatic Calorimetry and Dielectric Spectroscopy |
| E. Juszyńska-Gałązka, P.M. Zieliński, M. Massalska-Arodź and J. Krawczyk
The H. Niewodniczański Institute of Nuclear Physics, PAS, Kraków, Poland |
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| 2,2-dimethylbutan-1-ol, known as neohexanol, was studied by adiabatic calorimetry and dielectric spectroscopy. Details of complex solid state polymorphism and relaxational dynamics were identified and described. System of phases of neohexanol was found to be monotropic with three orientationally disordered crystalline phases besides isotropic liquid and ordered crystal. Moreover, two subsequent glass transition anomalies of heat capacity Cp (T) were detected on heating in one of the supercooled orientationally disordered crystalline phases. Thermodynamical properties of neohexanol are described in relation to the dielectric relaxation processes found. |
DOI: 10.12693/APhysPolA.124.917 PACS numbers: 65.60.+a, 77.22.Gm, 64.70.P- |