3 years ago

Graphene And Poly (Butylene Terephthalate)-Block-Poly (Tetramethylene Glycol) Enhance The Mechanical Performance Of Polyamide-6

Xubing Fu, Xia Dong, Yan Liu, Xingke Zhao, Na Zhang, Shunxin Qi, Dujin Wang, Guisheng Yang

Publication date: Available online 13 November 2018

Source: European Polymer Journal

Author(s): Xubing Fu, Xia Dong, Yan Liu, Xingke Zhao, Na Zhang, Shunxin Qi, Dujin Wang, Guisheng Yang

Abstract

Adding graphene to a polymer matrix is an effective way of fabricating advanced materials. Few-layer graphene (FLG)/polyamide-6 (PA6)/Poly (butylene terephthalate)-block-poly (tetramethylene glycol) (PBT-PTMG) ternary nanocomposites were prepared using an in situ polymerization extrusion method. Characterizations using scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy revealed a good dispersion of graphene in the composite matrix. Under the synergistic effects of a nanofiller and an elastomer, the nanocomposites showed apparent improvements in both strength and toughness. When incorporating 0.5 wt% FLG and 10 wt% PBT-PTMG, the flexural strength, impact strength, and elongation at break increased by 45%, 217%, and 390%, respectively. The reinforcing and toughening mechanisms are discussed in detail. As this method combines both the advantages of in situ polymerization and extrusion technology, it is therefore suitable for commercial production, enabling the potential applications of polymer composites.

Graphical abstract

This work demonstrated a new approach to fabricate graphene/PA6/ Poly (butylene terephthalate)-block-poly (tetramethylene glycol) nanocomposites with extraordinary strength and toughness by an in situ polymerization extrusion and melt extrusion process.

Graphical abstract for this article

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