Broadband dielectric response of glycerol and propylene carbonate: a comparison

TL;DR

This study compares the dielectric responses of glycerol and propylene carbonate across 18 decades of frequency, highlighting similarities and differences, and supports the mode coupling theory of the glass transition.

Contribution

It provides a comprehensive dielectric comparison of glycerol and propylene carbonate over an extensive frequency range, emphasizing differences near the boson peak.

Findings

Both materials show similar dielectric behavior over most frequencies.

Distinct differences are observed in the high-frequency region below the boson peak.

Results support the mode coupling theory of the glass transition.

Abstract

Dielectric data on glycerol and propylene carbonate covering 18 decades of frequency are presented and compared to each other. Both materials exhibit qualitatively similar behavior except for marked differences in the high-frequency region just below the boson peak. The results on both materials are consistent with the mode coupling theory of the glass transition.