The role of temperature and density on the glass-transition dynamics of glass formers.
A correlation between the monomeric volume and the dynamic quantity E*(V)/H*, used to provide a quantitative measure of the role of temperature and density on the dynamics, is demonstrated for a series of polymers and glass-forming liquids. We show that monomeric volume and local packing play a key role in controlling the value of this ratio and thus the dynamics associated with the glass temperature.
Floudas
G
G
Department of Physics, University of Ioannina, Greece. gfloudas@cc.uoi.gr
Mpoukouvalas
K
K
Papadopoulos
P
P