Work

Johari–Goldstein Heterogeneous Dynamics in a Model Polymer

Year: 2021

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide The heterogeneous character of the Johari–Goldstein (JG) relaxation is evidenced by molecular-dynamics simulation of a model polymer system. A double-peaked evolution of dynamic heterogeneity, with maxima located at JG and structural relaxation time scales, is observed and mechanistically explained. The short-time single-particle displacement during JG relaxation weakly correlates with the long-time one observed during structural relaxation.

Source: Macromolecules

DOI: 10.1021/acs.macromol.1c00066

Authors: Francesco Puosi, Antonio Tripodo, Marco Malvaldi, Dino Leporini

Institutions: University of Pisa, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, National Research Council

Language: English

Topic: Material Dynamics and Properties

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $5,000

Funder: Università di Pisa