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Polymers 2018, 10(9), 1020; https://doi.org/10.3390/polym10091020

Nanoscale Mechanical Properties and Indentation Recovery of PI@GO Composites Measured Using AFM

1,2
,
2
and
2,*
1
College of Civil Engineering, Hunan University of Science and Engineering, Yongzhou 425006, China
2
College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan 411105, China
*
Author to whom correspondence should be addressed.
Received: 24 August 2018 / Revised: 12 September 2018 / Accepted: 13 September 2018 / Published: 13 September 2018
(This article belongs to the Special Issue Polymer Clay Nano-composites)
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Abstract

Polyimide@graphene oxide (PI@GO) composites were prepared by way of a simple solution blending method. The nanoscale hardness and Young’s modulus of the composites were measured using nanoindentation based on atomic force microscopy (AFM). A nanoscale hardness of ~0.65 GPa and an elastic modulus of ~6.5 GPa were reached with a load of ~55 μN. The indentation recovery on the surface of PI@GO was evaluated. The results show that relatively low GO content can remarkably improve the nanoscale mechanical properties of PI. View Full-Text
Keywords: polyimide; graphene oxide; composite; mechanical properties; indentation recovery; AFM polyimide; graphene oxide; composite; mechanical properties; indentation recovery; AFM
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Zhou, J.; Cai, Q.; Xu, F. Nanoscale Mechanical Properties and Indentation Recovery of PI@GO Composites Measured Using AFM. Polymers 2018, 10, 1020.

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