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Polymers 2017, 9(1), 27; doi:10.3390/polym9010027

Effect of Short-Term Water Exposure on the Mechanical Properties of Halloysite Nanotube-Multi Layer Graphene Reinforced Polyester Nanocomposites

1
Institute of Product Design and Manufacturing (UniKL IPROM), Universiti Kuala Lumpur, 56100 Cheras, Kuala Lumpur, Malaysia
2
Department of Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
*
Author to whom correspondence should be addressed.
Academic Editors: Joannis K. Kallitsis, Georgios Bokias and Valadoula Deimede
Received: 5 December 2016 / Revised: 4 January 2017 / Accepted: 10 January 2017 / Published: 14 January 2017
(This article belongs to the Special Issue Hybrid Polymeric Materials)
View Full-Text   |   Download PDF [4964 KB, uploaded 14 January 2017]   |  

Abstract

The influence of short-term water absorption on the mechanical properties of halloysite nanotubes-multi layer graphene reinforced polyester hybrid nanocomposites has been investigated. The addition of nano-fillers significantly increased the flexural strength, tensile strength, and impact strength in dry and wet conditions. After short-term water exposure, the maximum microhardness, tensile, flexural and impact toughness values were observed at 0.1 wt % multi-layer graphene (MLG). The microhardness increased up to 50.3%, tensile strength increased up to 40% and flexural strength increased up to 44%. Compared to dry samples, the fracture toughness and surface roughness of all types of produced nanocomposites were increased that may be attributed to the plasticization effect. Scanning electron microscopy revealed that the main failure mechanism is caused by the weakening of the nano-filler-matrix interface induced by water absorption. It was further observed that synergistic effects were not effective at a concentration of 0.1 wt % to produce considerable improvement in the mechanical properties of the produced hybrid nanocomposites. View Full-Text
Keywords: nanocomposites; halloysite nanotubes; multi-layer graphene; water absorption; mechanical properties nanocomposites; halloysite nanotubes; multi-layer graphene; water absorption; mechanical properties
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Saharudin, M.S.; Atif, R.; Inam, F. Effect of Short-Term Water Exposure on the Mechanical Properties of Halloysite Nanotube-Multi Layer Graphene Reinforced Polyester Nanocomposites. Polymers 2017, 9, 27.

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