Length scale of dynamic heterogeneity in polymer nanocomposites

TL;DR

This study uses X-ray photon correlation spectroscopy to identify an intrinsic length scale of dynamic heterogeneity in polymer nanocomposites, revealing complex dynamics influenced by multiple parameters.

Contribution

It provides experimental evidence of a characteristic length scale for dynamic heterogeneity in polymer nanocomposites, a concept previously observed in other soft materials.

Findings

Existence of an intrinsic length scale for dynamic heterogeneity.

Dynamics vary complexly with different parameters.

Evidence consistent with behaviors in other soft materials.

Abstract

Using X- ray photon correlation spectroscopy measurements on gold nanoparticles embedded in polymethylmethacrylate we provide evidence for existence of an intrinsic length scale for dynamic heterogeneity in polymer nanocomposites similar to that in other soft materials.We also show how the dynamics varies in a complex way with various parameters.