Solid State Polymorphism and Dynamics οf 2,2-Dimethylbutan-1-ol as Studied by Adiabatic Calorimetry and Dielectric Spectroscopy

• Authors: E. Juszyńska-Gałązka , P. Zieliński , M. Massalska-Arodź , J. Krawczyk
• Languages of publication: EN

Abstracts

EN

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 C_{p}(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.

Keywords

EN

65.60.+a; 77.22.Gm; 64.70.P-

Discipline

• 77.22.Gm: Dielectric loss and relaxation
• 64.70.P-: Glass transitions of specific systems
• 65.60.+a: Thermal properties of amorphous solids and glasses: heat capacity, thermal expansion, etc.

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 6
• Pages: 917-925

Dates

published

2013-12

Contributors

author

E. Juszyńska-Gałązka

• The H. Niewodniczański Institute of Nuclear Physics, PAS, Kraków, Poland

author

P. Zieliński

• The H. Niewodniczański Institute of Nuclear Physics, PAS, Kraków, Poland

author

M. Massalska-Arodź

• The H. Niewodniczański Institute of Nuclear Physics, PAS, Kraków, Poland

author

J. Krawczyk

• The H. Niewodniczański Institute of Nuclear Physics, PAS, Kraków, Poland

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Identifiers

DOI

10.12693/APhysPolA.124.917