High-Strength Stereolithographic 3D Printed Nanocomposites: Graphene Oxide Metastability

Jill Z. Manapat, Joey Dacula Mangadlao, Brylee David Buada Tiu, Grace C. Tritchler, Rigoberto C. Advincula*

*この研究の対応する著者

研究成果: Article査読

103 被引用数 (Scopus)

抄録

The weak thermomechanical properties of commercial 3D printing plastics have limited the technology’s application mainly to rapid prototyping. In this report, we demonstrate a simple approach that takes advantage of the metastable, temperature-dependent structure of graphene oxide (GO) to enhance the mechanical properties of conventional 3D-printed resins produced by stereolithography (SLA). A commercially available SLA resin was reinforced with minimal amounts of GO nanofillers and thermally annealed at 50 and 100 °C for 12 h. Tensile tests revealed increasing strength and modulus at an annealing temperature of 100 °C, with the highest tensile strength increase recorded at 673.6% (for 1 wt % GO). Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) also showed increasing thermal stability with increasing annealing temperature. The drastic enhancement in mechanical properties, which is seen to this degree in 3D-printed samples reported in literature, is attributed to the metastable structure of GO, polymer-nanofiller cross-linking via acid-catalyzed esterification, and removal of intercalated water, thus improving filler-matrix interaction as evidenced by spectroscopy and microscopy analyses.

本文言語English
ページ(範囲)10085-10093
ページ数9
ジャーナルACS Applied Materials and Interfaces
9
11
DOI
出版ステータスPublished - 2017 3月 22
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)

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