Morphological Study of Electrospun Polyvinylpyrrolidone Fibers at High Concentration Using Water and Ethanol Solvents

Doni Bowo Nugroho; Nada Nadzira Ayasha Kamal; Jenni Bunga Enjelita Sidabalok; Rosita Wati; Nova Resfita; Muhammad Wildan Gifari

doi:10.23960/jemit.363

Authors

Doni Bowo Nugroho Biomedical Engineering Study Program, Institut Teknologi Sumatera, Lampung, Indonesia 35365
Nada Nadzira Ayasha Kamal Biomedical Engineering Study Program, Institut Teknologi Sumatera, Lampung, Indonesia 35365
Jenni Bunga Enjelita Sidabalok Biomedical Engineering Study Program, Institut Teknologi Sumatera, Lampung, Indonesia 35365
Rosita Wati Biomedical Engineering Study Program, Institut Teknologi Sumatera, Lampung, Indonesia 35365
Nova Resfita Biomedical Engineering Study Program, Institut Teknologi Sumatera, Lampung, Indonesia 35365
Muhammad Wildan Gifari Biomedical Engineering Study Program, Institut Teknologi Sumatera, Lampung, Indonesia 35365

DOI:

https://doi.org/10.23960/jemit.363

Keywords:

distilled water, electrospinning, ethanol, nanofibers, polyvinylpyrrolidone

Abstract

In this study, polyvinylpyrrolidone (PVP) (Mw ~40,000 g/mol) fibers were fabricated using distilled water and ethanol via an electrospinning approach. Morphological evaluations were carried out with a Scanning Electron Microscopy (SEM). Fiber diameters were analyzed with ImageJ. Solution Concentration of PVP with solvents adjusted to 50% (m/v), respectively. Then, the solution was electrospun with voltages of 8 and 12 kV. PVP/distilled water solution produced a relatively regular fiber network with enlarged junctions at 8 kV. However, it was ribbon-like, bead-like, and film-like in voltages of 12 kV. This structure was attributed to high surface tension and slow solvent evaporation. Another solution, PVP/ethanol, produced a relatively regular fiber network at 8 kV. The structure was different at 12 kV voltages. Globular and particle-like morphologies appear in these conditions. Fiber diameter was analyzed in the layers formed under 8 kV electrospinning conditions. The fiber diameter in PVP/distilled water was 1.05 ± 0.50 µm. Meanwhile, the fiber diameter in PVP/ethanol was 2.46 ± 0.64 µm. Although the fiber diameter was larger in PVP/ethanol, the resulting fiber was more continuous and more stable.

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