Processing and properties of antibacterial silver nanoparticle-loaded hemp hurd/poly(lactic acid) biocomposites

Khan, Belas A. and Chevali, Venkata S. and Na, Haining and Zhu, Jin and Warner, Philip and Wang, Hao (2016) Processing and properties of antibacterial silver nanoparticle-loaded hemp hurd/poly(lactic acid) biocomposites. Composites Part B: Engineering, 100. pp. 10-18. ISSN 1359-8368

Abstract

The use of silver nanoparticles in providing effective antibacterial resistance in glycidyl methacrylate-compatibilized hemp hurd-filled poly(lactic acid) biocomposite is presented. The thermal and mechanical properties, and antibacterial resistance against gram negative E. Coli was investigated, and characterized using X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis, and scanning electron microscopy. The inclusion of glycidyl methacrylate assisted in elastic moduli and strength increases at 10–30 wt % fraction of silver nanoparticle-loaded hemp hurd in poly(lactic acid), with 20 wt % hemp hurd-filled biocomposite exhibiting the highest range of properties within the biocomposites investigated. The inherent antibacterial property of hemp hurd was further enhanced using silver nanoparticle loading to achieve a safe level of heavy metal migration at 0.20–3.08 mg/kg. Effective antibacterial activity was achieved with distinct decreases of 85% and 89% in bacterial growth at 0.025 wt % and 0.05 wt % loading of silver nanoparticle in the biocomposite. Overall, the properties of these novel biocomposites demonstrated discernible potential in further development of food packaging applications.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 18 Aug 2016 02:10
Last Modified: 18 Aug 2016 02:10
Uncontrolled Keywords: Polymer-matrix composites (PMCs); Thermomechanical; Micro-mechanics; Mechanical testing; Injection moulding
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0910 Manufacturing Engineering > 091012 Textile Technology
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1016/j.compositesb.2016.06.022
URI: http://eprints.usq.edu.au/id/eprint/28891

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