Graphene/polypropylene nanocomposites with improved thermal and mechanical properties

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Small amount of large surface area graphene (G) is expected to significantly alter functional properties of polymers. The property enhancement is a function of degree of exfoliation and dispersion of G as well as its compatibility with base polymer. However, nonpolar nature of polyolefins such as polypropylene (PP) restricts homogeneous dispersion of G, leading to significant agglomeration and properties reduction. In this work, two compatibilizers, poly (ethylene-co-butyl acrylate) (EBA) (new compatibilizer) and PP-grafted-maleic anhydride (MA-PP) (conventional compatibilizer) were compared to enhance the dispersion efficacy of G in PP. The EBA-compatibilized nanocomposites exhibited 44% increase in the Young's modulus compared to 32% increment in MA-PP-compatibilized nanocomposites. Higher elongation at break for EBA-compatibilized nanocomposites is attributed to lower degree of crystallinity in these nanocomposites. On the other hand, EBA-compatibilized nanocomposites showed significantly improved thermal stability compared to MA-PP-compatibilized nanocomposites. The results indicate that EBA may act as a potential compatibilizer for G/PP nanocomposites.

Original languageEnglish
Article number50024
JournalJournal of Applied Polymer Science
Volume138
Issue number11
DOIs
Publication statusPublished - Mar 15 2021

Keywords

  • extrusion
  • graphene
  • mechanical properties
  • nanotubes
  • thermal properties
  • thermoplastics

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Graphene/polypropylene nanocomposites with improved thermal and mechanical properties'. Together they form a unique fingerprint.

Cite this