What is it about?
The slow and fast motion of particles in different regions of a glass-forming system leads to heterogeneity in the dynamics, which is one of the hallmarks of the glasses. In this work, we compare the structure and dynamics of one higher and one lower density system to examine the effect of structural heterogeneity on the dynamical heterogeneity. We show that disparity in the slow and fast motion of monomers gives rise to more dynamical heterogeneity in the linear polymer melt system.
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Why is it important?
Our study shows that an extent to slow and fast motion of monomers in supercooled polymers is also related to structural heterogeneity.
Perspectives
This work comparing the structure and dynamics of the polymer melt system at the higher and lower density, is relevant to the porous glasses.
Dr. Jalim Singh
National Institute of Science Education and Research Bhubaneswar
Read the Original
This page is a summary of: Density dependence of structural and dynamical heterogeneity in a linear polymer melt system, January 2019, American Institute of Physics,
DOI: 10.1063/1.5113075.
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