Mechanical and thermal properties of hyperbranched poly(ε-caprolactone) modified graphene/epoxy composites

A Correction to this article was published on 10 May 2020

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Abstract

Graphene nanosheets (GNs) often results in incompatibility with the hydrophobic polymer matrix, and the tendency to form aggregates during processing. Herein, hyperbranched polycaprolactone modified GNs (PGNs) was obtained using 3,4,9,10-perylenetetracarboxylic acid anhydride (PTCDA)reacted with GNs and caprolactone. Firstly, π-π stacking interactions between GNs and perylenebisimide derivatives (PBI), and then in-situ polymerization of ε-caprolactone. The structure and characteristic of PGNs were investigated by infrared spectroscopy, wide angle X-ray diffractometry, thermogravimetric analysis and ultraviolet spectrum. PGNs was added into epoxy matrix at different contents to improve the mechanical and thermal properties of epoxy. At 1.0 wt.% PGNs content, the impact strength and tensile strength of PGNs/epoxy composites were 43.41 kJ/m2 and 91.60 MPa. Compared with those of pure epoxy, these value increased by148% and 87%, respectively, as well as the Tg increased by about 20 °C.

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Change history

  • 10 May 2020

    The original version of this article unfortunately contained a mistake. Figure 2 was processed incorrectly. The correct Fig.��2 is now shown here.

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Acknowledgments

The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (51605109, 51763009 and 51463007), the Natural Science Foundation of Guangxi Province, China (2015GXNSFBA139231 2018GXNSFAA281296 and 2018GXNSFBA281052), Guangxi Ministry-Province Jointly-Constructed Cultivation Base for State Key Laboratory of Processing for Non-ferrous Metal and Featured Materials (19-KF-2 and 19-KF-9).

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Correspondence to Hong Ruan or Xu Xu or Shaorong Lu.

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The original version of this article was revised: Figure 2 was processed incorrectly. The correct Figure 2 is now shown here.

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Hou, L., Gao, J., Ruan, H. et al. Mechanical and thermal properties of hyperbranched poly(ε-caprolactone) modified graphene/epoxy composites. J Polym Res 27, 32 (2020). https://doi.org/10.1007/s10965-020-2008-x

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Keywords

  • Hyperbranched poly(ε-caprolactone)
  • Graphene
  • Epoxy resin
  • Mechanical properties