3D printing biocompatible polyurethane/poly(lactic acid)/graphene oxide nanocomposites: Anisotropic properties

Qiyi Chen, Joey Dacula Mangadlao, Jaqueline Wallat, Al De Leon, Jonathan K. Pokorski, Rigoberto C. Advincula

Research output: Contribution to journalArticle

94 Citations (Scopus)

Abstract

Blending thermoplastic polyurethane (TPU) with poly(lactic acid) (PLA) is a proven method to achieve a much more mechanically robust material, whereas the addition of graphene oxide (GO) is increasingly applied in polymer nanocomposites to tailor further their properties. On the other hand, additive manufacturing has high flexibility of structure design which can significantly expand the application of materials in many fields. This study demonstrates the fused deposition modeling (FDM) 3D printing of TPU/PLA/GO nanocomposites and its potential application as biocompatible materials. Nanocomposites are prepared by solvent-based mixing process and extruded into filaments for FDM printing. The addition of GO largely enhanced the mechanical property and thermal stability of the nanocomposites. Interestingly, we found that the mechanical response is highly dependent on printing orientation. Furthermore, the 3D printed nanocomposites exhibit good biocompatibility with NIH3T3 cells, indicating promise as biomaterials scaffold for tissue engineering applications.

Original languageEnglish
Pages (from-to)4015-4023
Number of pages9
JournalACS Applied Materials and Interfaces
Volume9
Issue number4
DOIs
Publication statusPublished - 2017 Feb 1
Externally publishedYes

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Keywords

  • Biocompatibility
  • Fused deposition modeling
  • Graphene oxide
  • Mechanical enhancement
  • Thermal stability
  • Thermoplastic polyurethane/poly(lactic acid) polymer blend

ASJC Scopus subject areas

  • Materials Science(all)

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