Predicting the Thermodynamic Ideal Glass Transition Temperature in Glass-Forming Liquids

Area of Science:

• Materials Science
• Physical Chemistry
• Thermodynamics

Background:

• The Kauzmann temperature (T_K) represents the ideal thermodynamic glass transition temperature.
• Supercooled liquids transform into glass before reaching T_K.
• Understanding T_K is crucial for elucidating the fundamental nature of glass transition in liquids.

Purpose of the Study:

• To accurately predict T_K values for 38 distinct glass-forming liquids.
• To develop and validate a new deduced equation for T_K prediction.
• To improve existing models for T_K estimation.

Main Methods:

• A new equation was deduced to predict T_K.
• Best-fitting parameters for the deduced equation were determined, achieving a high coefficient of determination (R² = 0.966).
• Coefficients of two established relations were updated with the new parameters, significantly enhancing prediction accuracy.

Main Results:

• The new deduced equation yielded accurate T_K predictions with R² = 0.966.
• Updating two prior relations with the best-fitting parameters improved their R² values to 0.970 and 0.969.
• Three refined models were successfully applied for precise T_K value determination.

Conclusions:

• The study successfully predicted T_K for 38 glass-forming liquids using an optimized equation.
• The refined models demonstrate improved accuracy in predicting the ideal thermodynamic glass transition temperature.
• This research contributes to a deeper understanding of the glass transition phenomenon.