Fractional Coupling of Primary and Johari–Goldstein Relaxations in a Model Polymer

Fractional Coupling of Primary and Johari–Goldstein Relaxations in a Model Polymer

A polymer model exhibiting heterogeneous Johari–Goldstein (JG) secondary relaxation is studied by extensive molecular-dynamics simulations of states with different temperature and pressure. Time–temperature–pressure superposition of the primary (segmental) relaxation is evidenced. The time scales of...

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Bibliographic Details
Main Authors: Carlo Andrea Massa, Francesco Puosi, Dino Leporini
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Polymers
Subjects:
polymer melt
Johari-Goldstein relaxation
dynamic heterogeneity
molecular-dynamics simulation
Online Access:https://www.mdpi.com/2073-4360/14/24/5560

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