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Effects of temperature, strain rate and molecule length on the deformation of graphene/polyethylene composites: A molecular dynamics simulation

Authors :
Dong Hao
Pengju Ren
Li Jiyong
Junqiao Zhao
Meng Bo
Songqing Hu
Source :
Chemical Physics Letters. 726:39-45
Publication Year :
2019
Publisher :
Elsevier BV, 2019.

Abstract

Molecular dynamics simulations are used to investigate the effects of temperature, strain rate and molecule length on the deformation of graphene/polyethylene composites. At higher temperature, the host molecules move easily to fit the strain during the deformation. When the strain rate is lower, atoms in the composite model are more relaxed to fit the strain, thus the yield stress of the composite model is smaller than that at a higher strain rate. Due to the longer the length of molecules, the relative movement between molecules is more difficult with the increase of the strain, resulting in a larger yield stress.

Details

ISSN :
00092614
Volume :
726
Database :
OpenAIRE
Journal :
Chemical Physics Letters
Accession number :
edsair.doi...........63006e143ac864c80e45f0fe50aa08b2
Full Text :
https://doi.org/10.1016/j.cplett.2019.04.037