2D-alumina platelets enhance mechanical and abrasion properties of PA-612 via interfacial hydrogen-bond interactions

Qian, Mengbo and Sun, Yiqi and Xu, Xiaodong and Liu, Lina and Song, Pingan and Yu, Youming and Wang, Hao and Qian, Jun (2017) 2D-alumina platelets enhance mechanical and abrasion properties of PA-612 via interfacial hydrogen-bond interactions. Chemical Engineering Journal, 308. pp. 760-771.

Abstract

Despite excellent ductility and dimension stability, the relatively low mechanical strength and stiffness of
PA612 extremely restrict its engineering applications. We herein have demonstrated the fabrication of
high-performance PA612 composites combining superior mechanical and abrasion resistance properties
by choosing two dimensional alumina platelets with a relatively low aspect ratio (~35). Infrared spectra
show that Al2O3 forms strong hydrogen-bond interactions with PA612. Tensile results demonstrate that adding 30 wt% of Al2O3 platelets increases the tensile strength and elastic modulus of PA612 by 55% (~73 MPa) and 128% (~3.38 GPa), respectively. In addition, the specific wear rate is reduced by about 61%. Such remarkable improvements in mechanical and abrasion resistance properties are mainly due
to the high strength and stiffness of alumina platelets and the strong interfacial interactions with the PA612 matrix. This work offers one new methodology for creating advanced polymer composites by choosing suitable building blocks and by regulating the interfacial interactions.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 07 Mar 2017 01:41
Last Modified: 17 Apr 2018 02:44
Uncontrolled Keywords: nylon 612, Al2O3, mechanical property, friction, hydrogen bond
Fields of Research : 03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030301 Chemical Characterisation of Materials
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Identification Number or DOI: 10.1016/j.cej.2016.09.124
URI: http://eprints.usq.edu.au/id/eprint/30847

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