Synergistic Effect of Graphene Nanoplatelets and Multiwall Carbon Nanotubes Incorporated in PLA Matrix: Nanoindentation of Composites with Improved Mechanical Properties

Todor Batakliev*, Vladimir Georgiev, Verislav Angelov, Evgeni Ivanov, Cristiane Kalupgian, Pablo A.R. Muñoz, Guilhermino J.M. Fechine, Ricardo J.E. Andrade, Rumiana Kotsilkova

*この研究の対応する著者

研究成果: Article査読

3 被引用数 (Scopus)

抄録

The synergistic effect of two carbon nanofillers on the mechanical properties of PLA-based nanocomposites was investigated in the present work. Polylactic acid is relatively brittle semi-crystalline polymer which was selected for composite matrix because of its biodegradable properties. It was reinforced with graphene nanoplatelets and multiwall carbon nanotubes by means of melt mixing preparation method. Nanohardness and Young’s modulus of smooth nanocomposite samples received by 3D printing were defined by nanoindentation experiments using Berkovich-type pyramidal nanoindenter. It was found that the compounds, incorporated with both graphene and carbon nanotubes in the polymer structure, exhibit better mechanical performance compared to the nanocomposites loaded with a single carbon nanofiller. Different techniques of sample preparation were applied in order to see the influence of preliminary processing on the nanomechanical properties of composite specimens. X-ray diffraction and Raman spectroscopy were used to study the structural features of the pristine carbon nanomaterials.

本文言語English
ページ(範囲)3822-3830
ページ数9
ジャーナルJournal of Materials Engineering and Performance
30
5
DOI
出版ステータスPublished - 2021 5月
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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