Hydrogen motions and the α-relaxation in glass-forming polymers: Molecular dynamics simulation and quasi-elastic neutron scattering results
J Colmenero A Arbe F Alvarez A Narros D Richter M Monkenbusch B Farago
Click here to view fulltext PDF
Permanent link:
https://www.ias.ac.in/article/fulltext/pram/063/01/0025-0032
The combination of molecular dynamics simulations and neutron scattering measurements on three different glass-forming polymers (polyisoprene, poly(vinyl ethylene) and polybutadiene) has allowed to establish the existence of a crossover from Gaussian to non-Gaussian behavior for the incoherent scattering function in the α-relaxation regime. The deviation from Gaussian behavior observed can be reproduced assuming the existence of a distribution of discrete jump lengths underlying the sublinear diffusion of the atomic motions during the structural relaxation.
J Colmenero1 2 3 A Arbe2 F Alvarez1 2 A Narros1 D Richter4 M Monkenbusch4 B Farago5
Volume 96, 2022
All articles
Continuous Article Publishing mode
Click here for Editorial Note on CAP Mode
© 2021-2022 Indian Academy of Sciences, Bengaluru.