Diamond nanothread as a new reinforcement for nanocomposites

Zhan, Haifei, Zhang, Gang, Tan, Vincent B. C., Cheng, Yuan, Bell, John M., Zhang, Yong-Wei, & Gu, Yuantong (2016) Diamond nanothread as a new reinforcement for nanocomposites. Advanced Functional Materials, 26(29), pp. 5279-5283.

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Abstract

This work explores the application of a new one-dimensional carbon nanomaterial, the diamond nanothread (DNT), as a reinforcement for nanocomposites. Owing to the existence of Stone-Wales transformation defects, the DNT intrinsically possesses irregular surfaces, which is expected to enhance the non-covalent interfacial load transfer. Through a series of in silico pull-out studies of the DNT in polyethylene (PE) matrix, we found that the load transfer between DNT and PE matrix is dominated by the non-covalent interactions, in particular the van der Waals interactions. Although the hydrogenated surface of the DNT reduces the strength of the van der Waals interactions at the interface, the irregular surface of the DNT can compensate for the weak bonds. These factors lead to an interfacial shear strength of the DNT/PE interface comparable with that of the carbon nanotube (CNT)/PE interface. Our results show that the DNT/PE interfacial shear strength remains high even as the number of Stone-Wales transformation defects decreases. It can be enhanced further by increasing the PE density or introduction of functional groups to the DNT, both of which greatly increase the non-covalent interactions.

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ID Code: 95798
Item Type: Journal Article
Refereed: Yes
Keywords: nanocomposite, reinforcement, diamond nanothread, interfacial shear strength
DOI: 10.1002/adfm.201600119
ISSN: 1616-3028
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Composite and Hybrid Materials (091202)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Numerical Modelling and Mechanical Characterisation (091307)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > NANOTECHNOLOGY (100700) > Nanoscale Characterisation (100712)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Funding:
Facilities: HPC – QUT Supercomputer
Copyright Owner: Copyright 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Deposited On: 26 May 2016 22:52
Last Modified: 13 Oct 2016 23:53

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