Akademik Veri Yönetim Sistemi
International Congress on Medicine Life Science and Healtcare (UTYAB), 21 - 23 Şubat 2022, ss.13-21
This study focus on the production of fibers, beads and beaded-fibers from aqueous solutions of
different concentrations of Poly(ethylene oxide) (PEO) via electrospinning. Effect of PEO
concentration (3-5%) on the viscosity of the polymer solution and the morphology of electrospun
mats (bead area%, fiber area%, bead to fiber ratio, average length and width of beads, number of
beads, aspect ratio of beads, average diameter of fibers) were investigated.
The increase in PEO concentration caused an increase in the viscosity of the polymer solution. As the
PEO concentration increased, mainly fibers were formed, while the probability of bead formaton
decreased. The obtained beads were also more elliptical. A critical high polymer
concentration/viscosity is required to form fibers. Below the critical concentration, the number of
beads increases, while the size of beads decreases and more elliptical beads are formed.
In conclusion, the percentage of fiber area, the length and width of the beads, and the average diameter
of the fibers increase with increasing polymer concentration, while the precentage of bead area, the
bead/fiber ratio, and the number of beads per micrometer decrease.
As a result, it was found that PEO concentration and viscosity are parameters that significantly affect
the formation and size of fibers/beads/beaded fibers and their proportions and areas in mats. The morphology of the produced beads and/or fibers can be modified by changing the polymer
concentration and thus the solution viscosity.