Abstract
Electrospinning is a versatile technique which results in the formation of a fine web of fibers. The mechanical properties of electrospun fibers depend on the choice of solution constituents, processing parameters, environmental conditions, and collector design. Once electrospun, the fibrous web has little mechanical integrity and needs post fabrication treatments for enhancing its mechanical properties. The treatment strategies include both the chemical and physical techniques. The effect of these post fabrication treatments on the properties of electrospun membranes can be assessed through either conducting tests on extracted single fiber specimens or macro scale testing on membrane specimens. The latter scenario is more common in the literature due to its simplicity and low cost. In this review, a detailed literature survey of post fabrication strength enhancement strategies adopted for electrospun membranes has been presented. For optimum effect, enhancement strategies have to be implemented without significant loss to fiber morphology even though fiber diameters, porosity, and pore tortuosity are usually affected. A discussion of these treatments on fiber crystallinity, diameters, and mechanical properties has also been produced. The choice of a particular post fabrication strength enhancement strategy is dictated by the application area intended for the membrane system and permissible changes to the initial fibrous morphology.
Highlights
Fabrication of nanoscale materials has attracted a lot of attention in recent years due to the promise of nanotechnology in various domains, owing to their unique mechanical, electrical, and optical properties distinct from their bulk counterparts [1,2]
It was reported that the combined impact of superior mechanical properties of surface deposited CNTs and crosslinking of polyvinyl alcohol (PVA) was an increase in tensile modulus of the membrane by 20%
The results revealed that the crosslinking time of 1 day was insufficient, as it did not impart sufficient stability to the gelatin nanofibrous membranes, which became transparent and sticky after an hour of exposure to the aqueous medium
Summary
Fabrication of nanoscale materials has attracted a lot of attention in recent years due to the promise of nanotechnology in various domains, owing to their unique mechanical, electrical, and optical properties distinct from their bulk counterparts [1,2]. A lot of effort has been invested in the control of size and morphology at the nanoscale in order to design and fabricate viable structures and devices [3] using so called bottom up and top down methods [4,5,6,7] Electrospinning is one such promising technique for the fabrication of nanoscale fibers and their structures due to its simple execution. The versatility of this technique makes it suitable for many different polymeric materials, their blends, and composites in different forms such as solutions, sols, and polymer melts. The droplet connected to the two terminals of a high voltage power high from applied the needle droplettip towards at the needle tip gets charged assupply
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
