Third Day Poster Session, 17 June 2010 - NanoTR-VI

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Poster Session, Thursday, June 17
Theme F686 - N1123
1
Effect of Concentration on Roller Electrospinning
1
2
1
UF.YenerUP P*, O.JirsakP P R.GemciP
PTextile Engineering Depatment, Engineering& Architecture Faculty, Kahramanmaras Sutcu Imam University, Campus of Avsar, 46100,
Kahramanmaras, Turkey
2
PNonwoven Department, Textile Engineering Faculty, Technical University of Liberec, Halkova 6, 46117, Czech Republic
Abstract- In this study we studied the effect of concentration on Roller Electrospinning Method. Firstly we solved PVB in isopropanol by
using different concentrations as 6%, 7%, 8%, 9%, 10%wt of PVB polymer. Later we compared fiber characteristics for each solvent. We
investigated that fiber diameter increases with increasing of concentration. In higher concentrations, the resultant fibers were more regular.
Nanofibers can be produced from a wide range of
polymers. These fibers have extremely high specific
surface area due to their small diameters, high surface per
weight ratio, good barrier characteristics against the
microorganism and fine particles, high surface energy,
good strength per unit weight, and covering effects, etc [1].
….One of the electrospinning is Nanospider (Roller
Electrospinning) which is the only method for using in
industry nanofibers continuously. This method was
invented by Jirsak in Technical University of Liberec
(Czech Republic), 2003 [2].
In this work, we used Roller Electrospinning with
Polyvinly Butyral (molecular weight of 60,000)
+Isopropanol in different concentrations. These
concentrations were in 6%, 7%, 8%, 9%, 10%wt of PVB.
Conductivity, surface tension, viscosity tests were done.
Increasing the concentration increased the viscosity. Result
of viscosity are shown in figure 1.
6% PVB60+PRO
ƒ = f (Á)
7% PVB60+PRO
ƒ = f (Á)
8% PVB60+PRO
ƒ = f (Á)
9% PVB60+PRO
ƒ = f (Á) 0.50
10% PVB60+PRO
ƒ = f (Á)
0.45
Figure 2. Fabric throughput (g/min/m) of PVB solution in
different concentrations.
According to figure 2 9%wt of PVB solution had a good
throughput but diameter (avr. Dia: 1,5μm) rather high as
shown in figure 3-a. 10%wt of PVB nanofibers had an
average diameter as 180nm as shown in figure 3-b but
throughput was not high.
0.40
0.35
ƒ in Pas
0.30
0.25
0.20
0.15
0.10
HAAKE RheoWin 3.61.0000
0.05
0 1200 2400 3600 4800 6000
Á in 1/s
Figure 1. Viscosity of PVB solution in different concentrations.
In next step we compared the SEM images of samples
and we observed that the diameter increased with
increasing of concentration too. The fiber uniformity was
increased with increasing of concentration.
In summary we calculated the throughput of nano web
in g/min/m is shown in figure 2.
(a)
(b)
Figure 3. (a) PVB nanofiber with 9%wt of PVB polymer, (b)
PVB nanofiber with 10%wt of PVB polymer
This work was partially supported by Technical
University of Liberec. We thank to all technicians in TUL.
*Corresponding author: HTfyener@ksu.edu.trT
[1] An Introduction to Electrospinning and Nanofibers Seeram
Ramakrishna, Kazutoshi Fujihara, Wee-Eong Teo.Teik-Cheng
Lim & Zuwei Ma National University of Singapore
[2] O. Jirsak, F. Sanetrnik, D. Lukas, V. Kotek, L. Martinova,and
J. Chaloupek, Patent WO 2005024101 (2005).
6th Nanoscience and Nanotechnology Conference, zmir, 2010 772