In Situ Synthesis and Mechanical Properties of Polylactic Acid/Hydroxyapatite Functionalized Graphene Nanocomposite

Abstract:

The hydroxyapatite functionalized graphene (HAp-GnP) was prepared by precipitation method. It was characterized by Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). Polylactic acid (PLA)/HAp-GnP and PLA/HAp-GnP composites were prepared in film by solution casting. The amount of HAp-GnP and HAp/GnP filled in PLA was fixed at 5% (by weight). The influence of HAp-GnP in the mechanical properties including tensile strength (TS), tensile modulus (E) and elongation at break (EB) of composites was investigated. It was found that tensile strength (TS) and tensile modulus (E) of the PLA/HAp-GnP composite were higher than those of PLA/HAp/GnP composite as a result of HAp making the interfacing with graphene leading to the greater distribution of HAp-GnP in PLA matrix. The PLA/HAp-GnP composite is applicable to be applied as bone substitute in the future.

• Periodical: Key Engineering Materials (Volume 735)
• Pages: 230-234
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.735.230
• Online since: May 2017
• Authors: Aekkapan Sriboonrung, Siree Tangbunsuk, Chomdao Sinthuvanich, Wirunya Keawwattana*
• Keywords: Composite, Graphene, Hydroxyapatite, Polylactic Acid

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