Fabrication of Polyvinylpyrrolidone Nanofibers with Green Solvents

Year 2019, Volume: 14 Issue: 2, 352 - 366, 30.11.2019

Funda Cengiz Çallıoğlu , Hülya Kesici Güler

https://doi.org/10.29233/sdufeffd.589516

Cited By: 7

Abstract

In
this study, biocompatible Polyvinylpyrrolidone (PVP) nanofibers were produced with
ultra-pure water, rose water, lavender water, ethanol, acetone and acetic acid
with green electrospinning approach. Polymer solutions were characterized with
conductivity, surface tension and viscosity measurements. Morphological analyzes
were carried out with Scanning Electron Microscope (SEM). Conductivity, surface
tension and viscosity results of PVP/ ultra-pure water, rose water and lavender
water solutions were similar. On the other hand, PVP/acetic acid solution has
the highest viscosity and lowest conductivity values and PVP/ethanol solution
has got the lowest surface tension. In addition; the lowest average fiber
diameters were obtained from ultra-pure water, rose water and lavender water
solvents but there are some beads on the nanofiber structure. The smoothest
nanofibers without beads were obtained from PVP/ethanol but it was observed
that average fiber diameter is about 724 nm higher than other PVP solutions. Therefore,
ethanol was chosen as a co-solvent to enhance fiber morphology for second part
of study. Moreover; the relation between solution conductivity, nanofiber diameter
and web diameter were determined and it was found that nanofibrous surface
diameter increases and fiber diameter decreases with the increase of solution conductivity.

Keywords

Rose water, Lavender water, Green electrospinning, Polyvinylpyrrolidone, Green Solvent, Nanofiber

Thanks

The authors would like to thank Assoc. Prof. Dr. Sabri Erbaş and Dr. Gürcan GÜLER for their contributions.

Çevreci Çözücüler ile Polivinilpirolidon Nanolif Üretimi

Abstract

Bu çalışmada, çevreci
elektro lif çekimi yaklaşımı ile ultra saf su, gül suyu, lavanta suyu, etanol,
asetik asit ve aseton gibi farklı çevreci çözücüler ile biyouyumlu polivinilpirolidon
(PVP) nanoliflerin üretiminin gerçekleştirilmiştir. Polimer çözeltiler
iletkenlik, yüzey gerilimi ve viskozite ölçümleri ile karakterize edilmiştir.
Morfolojik analizler Taramalı Elektron Mikroskopu (SEM) ile
gerçekleştirilmiştir. PVP/ultra saf su, gül suyu ve lavanta suyu çözeltilerinin
iletkenlik, yüzey gerilimi ve viskozite sonuçları; benzer iken PVP/ asetik asit
çözeltisi en yüksek viskoziteye ve en düşük iletkenlik değerlerine sahiptir.
Diğer taraftan PVP/etanol çözeltisi en düşük yüzey gerilimine sahiptir. En
düşük ortalama lif çapı; ultra saf su, gül suyu ve lavanta suyu ile elde
edilmiştir fakat boncuklu lifler gözlenmiştir. En düzgün nanolifler PVP/etanol
çözeltisinden elde edilirken, ortalama lif çapının 724 nm civarında, diğer PVP
çözeltilerden daha kalın olduğu gözlenmiştir. Bu nedenle çalışmanın diğer kısmında
lif morfolojisini geliştirmek için etanol yardımcı çözücü olarak seçilmiştir. Ayrıca,
çözelti iletkenliği, lif çapı ve nanolifli yüzey çapı arasında ilişki olduğu
tespit edilmiş ve iletkenlik arttıkça, lif çapının azaldığı, nanolifli yüzey
çapının ise arttığı belirlenmiştir.

Keywords

Gül suyu, Lavanta suyu, Polivinilpirolidon, Çevreci çözücü, Çevreci elektro lif çekim yöntemi, Nanolif

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