Atomic force microscopic characterization of Aloe vera/garphene oxide based electrospun nanofibers

There has been increasing interest in polymeric fibers for biomedical and biotechnological applications . Nanofibrous structures developed by electrospinning technology provide suitable extracellular matrix for regenerative medicine. Aloe vera is one of the medicinal herbs with a well-established spectrum of wound healing, antimicrobial and anti-inflammatory property. The purpose of the present work was to combine the biological properties of Aloe vera and the advantages of electrospun nanofibers. Also, garphene oxide was produced by the modified Hummers method and was then dispersed in water by sonication for about 2 h. It was synthesized from natural graphite by the modified Hummers method. The samples were then air dried under ambient lab conditions. With amounts of 6% w/v for total concentration of solid powder of polyvinylpyrrolidone (PVP) and Aloe vera in the solution; 30% w/w of Aloe vera with respect to total concentration; 18 kV for applied voltage. After completely dissolving PVP in Ethanol:DMF:H2O (45:45:10) Aloe vera powder was dissolved in the solution. Stable graphene oxide nanosheets 1.5% w/w with respect to total concentration were prepared by adding these particles to Ethanol:DMF:H2O followed by sonication.The morphology of the resulting PVP/Aloe vera/graphene oxide electrospun nanofibers was analyzed using Atomic force microscope (AFM).

کلیدواژه ها:

Electrospun nanofibers ، Garphene oxide ، Atomic force microscope ، Polyvinylpyrrolidone (PVP)