Tensile behavior of electrospun polyacrylonitrile (PAN) nanofiber membrane for water desalination process

Ahmad Khushaini, ntan Nuraina (2021) Tensile behavior of electrospun polyacrylonitrile (PAN) nanofiber membrane for water desalination process. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Desalination is one of the advanced technologies to manage the freshwater shortage and membrane distillation (MD) is one of the powerful application for desalinating water. MD is a non-isothermal membrane-based desalination method controlled by the temperature difference created within the membrane. There is also the limitation issued as the membrane breakage can occur when mechanical strength is insufficient due to unable to withstand the stress and pressure applied during the MD procedure. To build a membrane that is ideal for long-term performance, comprehensive research is required to investigate the relationship between the MD and mechanical properties. The polyacrylonitrile (PAN) and electrospinning are the polymer and technique chosen to generate the desired feature of nanofiber membrane that is compatible with water desalination application. The preparation of the solution and fabrication of nanofiber were discussed. The parameters during the electrospinning process are controlled because it gives an impact on the result. The characterization process is done using scanning electron microscopy (SEM) to assess the morphological characteristic and fiber diameter of the fibers. The average diameter of the fiber was decreased as the tip-to-collector distance increased. A comparative study for tensile strength was conducted to compare the result of tensile behavior. Tensile strength and Young’s modulus were increased while the strain of the nanofiber was decreased if the fillers were added. This study aims to show a brief introduction to electrospun PAN nanofiber and a comprehension to achieve the required properties in polymeric membranes used in MD for desalination purposes.

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