Mechanical Behavior of Melt‐Mixed 3D Hierarchical Graphene/Polypropylene Nanocomposites
Journal article, 2020

The mechanical properties of novel low percolation melt-mixed 3D hierarchical graphene/polypropylene nanocomposites are analyzed in this study. The analysis spans a broad range of techniques and time scales, from impact to tensile, dynamic mechanical behavior, and creep. The applicability of the time–temperature superposition principle and its limitations in the construction of the master curve for the isotactic polypropylene (iPP)-based graphene nanocomposites has been verified and presented. The Williams–Landel–Ferry method has been used to evaluate the dynamics and also Cole–Cole curves were presented to verify the thermorheological character of the nanocomposites. Short term (quasi-static) tensile tests, creep, and impact strength measurements were used to evaluate the load transfer efficiency. A significant increase of Young’s modulus with increasing filler content indicates reasonably good dispersion and adhesion between the iPP and the filler. The Young’s modulus results were compared with predicted modulus values using Halpin–Tsai model. An increase in brittleness resulting in lower impact strength values has also been recorded.

nanocomposites

time–temperature superposition

mechanical properties

graphene

Author

Karolina Gaska

Chalmers, Industrial and Materials Science, Engineering Materials

Georgia Manika

Chalmers, Industrial and Materials Science, Engineering Materials

Thomas Gkourmpis

Chalmers, Industrial and Materials Science, Engineering Materials

Davide Trachida

Borealis Polyolefine GmbH

Antonis Gitsas

Borealis Polyolefine GmbH

Roland Kádár

2D-Tech

Chalmers, Industrial and Materials Science, Engineering Materials

Polymers

2073-4360 (eISSN)

Vol. 12 1309

High performance and scalable tailored graphene - polyolefin nanocomposites

VINNOVA, 2018-11-30 -- 2021-02-28.

Subject Categories

Materials Engineering

Areas of Advance

Materials Science

DOI

10.3390/polym12061309

More information

Latest update

9/10/2020