Fabrication Of Uniaxially Aligned Electrospun Nanofibre Using A Rotating Collector

Amir Hamzah, Muhamad Nasruddin (2018) Fabrication Of Uniaxially Aligned Electrospun Nanofibre Using A Rotating Collector. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Due to the development of nanofiber in medical application, military equipment and many more, the aligned nanofiber required intensive knowledge and information in electrospinning process and rotating drum as collector of nanofiber. Yet, the normal process of electrospinning using flat plate as collector produced random of nanofiber due to whipping instability that occur when the electrostatic force is induced to the polymeric solution. Thus, formation of aligned nanofiber can be generated by using rotary collector with suitable speed. Therefore, this research aims to obtain the uniaxially aligned electrospun nanofiber by using collector and identify the suitable speed of rotating collector. Polyvinyl Alcohol (PVA) electrospun nanofiber was produced by using electrospinning machine fabricated by UTeM students. The speed of rotating collector was set up at 100, 200, 300, 400, 500 600, 700, 800, 900, 1000, 1100, 1200, 1300, 1400, 1500 and 1600 RPM for 7 minutes with 10 cm distance needle tip with rotating collector and set up feed rate at 0.5 ml/h. The voltage was set at 15kv. Scanning Electron Microscope (SEM) was used to examine the morphology of the fiber. While ImageJ software was used to analyze the characteristic of nanofiber. Alignment of electrospun nanofibers were fabricated but there were still random nanofiber were obtain. This is because the speed of rotating collector need to get alignment approximately 24 m/s but the speed of rotating collector that can that use for this study only can rotate at 8.46 m/s. Generally, to get aligned eelctrospun nanofiber, the speed of rotating collector must be same or higher with speed of whipping instability.

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