7-11 July 2014
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=16&confId=34"><font color=#0000ff>SAIP2014 Proceedings published on 17 April 2015</font></a>

Preparation and characterization of poly(vinyl alcohol)/graphene composite nanofibers via electrospinning

8 Jul 2014, 11:50
20m
D Les 103

D Les 103

Oral Presentation Track F - Applied Physics Applied

Speaker

Mr Farshad Barzegar (University of Pretoria)

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

Yes

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

We report on the synthesis and characterization of electrospun polyvinyl alcohol (PVA)/graphene nanofibers. The samples produced were characterized by Raman spectroscopy for spectroscopy for composition, scanning electron microscopy (SEM) for surface morphology and Thermogravimetric analysis (TGA) for thermal properties. SEM measurements clearly show uniform fiber formation and excellent graphene dispertion within the fibers, while TGA measurements show the improved thermal stability of PVA in the presence of graphene. The synthesized polymer reinforced nano-fibers have potential to serve in many different applications such as thermal management, electrodes and biomedical materials for drug delivery. We successfully incorporated graphene nanofillers into PVA fibers in order to improve the thermal properties of the resulting fibers. Three different source of graphene were used for that purpose and all show improved thermal properties of the fibers after incorporation of the graphene nanofillers. The relatively simple and economical electrospinning technique was used to fabricate continuous fibers. The growth of the PVA fibers was optimized for this system in term of bead free fibers and thinner fibers. It was realized that the fibers synthesized were hollow.the results show a slow weight loses, meaning enhanced thermal stability of the fibers with increasing graphene loading into the PVA fibers.

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD)?

MSc

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

Yes

Main supervisor (name and email)<br>and his / her institution

Prof. Ncholu Manyala
ncholu.manyala@up.ac.za
University of Pretoria

Primary author

Mr Farshad Barzegar (University of Pretoria)

Co-authors

Mr Abdulhakeem Bello (University of Pretoria) Mr Damilola Momodu (University of Pretoria) Dr Kouadio Julien Dangbegnon (Nelson Mandela Metropolitan University) Dr Ncholu Manyala (University of Pretoria)

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