NDLI: Preparation, morphology and conductivity of polyacrylonitrile/multi-wall carbon nanotubes composite nanofibers

Content Provider	Springer Nature Link
Author	Mohammadpour, Razieh Rafizadeh, Mehdi
Copyright Year	2014
Abstract	Composite nanofibers of polyacrylonitrile/multi-wall carbon nanotubes (PAN/MWCNTs) were prepared via electrospinning. Samples contained 0, 0.5, 1, 2, 3, and 3.5 wt% of MWCNTs. The viscosity and electrical conductivity of electrospinning solutions were measured. Results revealed that, with the addition of multi-wall carbon nanotubes, viscosity was increased and electrical conductivity was improved. Rheological behavior was studied using two different viscometers. Moreover, morphology and diameters of the composite nanofibers were studied by scanning electron microscopy (SEM) and nanofiber diameter distributions were presented. SEM micrographs showed that by adding MWCNTs, the average diameter of nanofibers was increased. Furthermore, the effect of MWCNTs on glass transition temperature, T $_{g}$, was investigated using differential scanning calorimetry (DSC) technique. The results showed that T $_{g}$ was increased with the addition of MWCNTs. In addition, Fourier transform infrared spectroscopy (FTIR) results showed that MWCNTs can affect the orientation ability of polymer chains. The effects of adding salt, increasing voltage and changing the tip-to-collector distance on the morphology and diameters of composite nanofibers were examined. The electrical conductivity results of electrospun mats were measured by a two-probe method. Electrical conductivity was increased by addition of MWCNTs and its behavior followed the percolation theory. Finally, it was observed that mats with smaller diameters have higher electrical conductivity.
Starting Page	731
Ending Page	743
Page Count	13
File Format	PDF
ISSN	10261265
Journal	Iranian Polymer Journal
Volume Number	23
Issue Number	9
e-ISSN	17355265
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-08-17
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polymer Sciences Morphology Electrospinning Conductivity Ceramics, Glass, Composites, Natural Methods Diameter of composite nanofibers Multi-wall carbon nanotubes
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Chemical Engineering Polymers and Plastics

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