Effects of graphene nanoplatelets and multiwall carbon nanotubes on the structure and mechanical properties of Poly(lactic acid) composites: A comparative study

Todor Batakliev*, Ivanka Petrova-Doycheva, Verislav Angelov, Vladimir Georgiev, Evgeni Ivanov, Rumiana Kotsilkova, Marcello Casa, Claudia Cirillo, Renata Adami, Maria Sarno, Paolo Ciambelli

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)

Abstract

Poly(lactic acid)/graphene and poly(lactic acid)/carbon nanotube nanocomposites were prepared by an easy and low-cost method of melt blending of preliminary grinded poly(lactic acid) (PLA) with nanosized carbon fillers used as powder. Morphological, structural and mechanical properties were investigated to reveal the influence of carbon nanofiller on the PLA-based composite. The dependence of tensile strength on nanocomposite loading was defined by a series of experiments over extruded filaments using a universal mechanical testing instrument. The applying the XRD technique disclosed that compounds crystallinity significantly changed upon addition of multi walled carbon nanotubes. We demonstrated that Raman spectroscopy can be used as a quick and unambiguous method to determine the homogeneity of the nanocomposites in terms of carbon filler dispersion in a polymer matrix.

Original languageEnglish
Article number469
JournalApplied Sciences (Switzerland)
Volume9
Issue number3
DOIs
Publication statusPublished - 2019 Jan 30
Externally publishedYes

Keywords

  • Carbon nanofillers
  • Nanocomposites
  • Poly(lactic) acid (PLA)
  • Structure properties
  • Tensile strength

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

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