TY - JOUR
T1 - Brillouin scattering study of glass-forming propylene glycol
AU - Tsukada, S.
AU - Ike, Y.
AU - Kano, J.
AU - Kojima, S.
N1 - Funding Information:
This work was supported in part by Grant-in-Aid Nos. 137400232 and 15654057 from the Ministry of Education, Culture, Sports, Science, and Technology, Japan.
PY - 2006/12/20
Y1 - 2006/12/20
N2 - The elastic properties of propylene glycol (PG) were studied by Brillouin scattering between 100 K and 442 K using a high-resolution Fabry-Perot interferometer. The acoustic phonon velocity, phonon damping, and relaxation time were measured as functions of temperature. At high temperatures, the temperature dependence of the relaxation time obeyed the Arrhenius law, τ = τ0 exp (ΔE/kBT). We obtained ΔE = 0.27 eV and τ0 = 6.40 × 10-16 s. The dynamical properties between racemic PG and chiral isomer (S)-PG were compared and small differences, which were within the experimental uncertainty, were observed. These differences were attributed to the molecular interaction, which played an important role in relaxation. Neither material displayed an elastic anomaly at its melting point.
AB - The elastic properties of propylene glycol (PG) were studied by Brillouin scattering between 100 K and 442 K using a high-resolution Fabry-Perot interferometer. The acoustic phonon velocity, phonon damping, and relaxation time were measured as functions of temperature. At high temperatures, the temperature dependence of the relaxation time obeyed the Arrhenius law, τ = τ0 exp (ΔE/kBT). We obtained ΔE = 0.27 eV and τ0 = 6.40 × 10-16 s. The dynamical properties between racemic PG and chiral isomer (S)-PG were compared and small differences, which were within the experimental uncertainty, were observed. These differences were attributed to the molecular interaction, which played an important role in relaxation. Neither material displayed an elastic anomaly at its melting point.
KW - Brillouin scattering
KW - Chiral isomer
KW - Liquid-glass transition
KW - Lower alcohol
KW - Propylene glycol
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U2 - 10.1016/j.msea.2006.03.131
DO - 10.1016/j.msea.2006.03.131
M3 - Article
AN - SCOPUS:33751104781
SN - 0921-5093
VL - 442
SP - 379
EP - 382
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
IS - 1-2 SPEC. ISS.
ER -