Surface functionalized carbon nanotube with polyvinylidene fluoride: Preparation, characterization, current-voltage and ferroelectric hysteresis behaviour of polymer nanocomposite films

A comparative study of current-voltage characteristics and ferroelectric properties of polyvinylidene fluoride (PVDF) based nanocomposite films with pure multiwall carbon nanotubes (MWCNTs) and surface functionalized MWCNTs by different type of functionalize groups (-COOH, -OH, -NH2) as filler, was...

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Bibliographic Details
Published in:AIP advances 2017-04, Vol.7 (4), p.045110-045110-16
Main Authors: Das, Amit Kumar, Bhowmik, Rabindranath, Meikap, Ajit Kumar
Format: Article
Language:English
Subjects:
Comparative studies
Conducting polymers
Current voltage characteristics
Electrical resistivity
Ferroelectric materials
Ferroelectricity
Fluorides
Flux density
Multi wall carbon nanotubes
Nanocomposites
Nanotubes
Polymer films
Polymers
Polyvinylidene fluorides
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Summary:A comparative study of current-voltage characteristics and ferroelectric properties of polyvinylidene fluoride (PVDF) based nanocomposite films with pure multiwall carbon nanotubes (MWCNTs) and surface functionalized MWCNTs by different type of functionalize groups (-COOH, -OH, -NH2) as filler, was reported. The flexible nanocomposite films based on PVDF and surface modified MWCNTs were fabricated via solution casting method. The current voltage characteristics suggests that –COOH and –OH functionalize MWCNT loading PVDF films are semiconducting in nature whereas raw MWCNT and –NH2 functionalize MWNCT loading PVDF films are comparatively conducting in nature. Experimental data of current density-electric field were fitted with different existing theoretical models. It is observed that just by changing the functionalization group the electrical conductivity of the composite films significantly changes which is discernible from the current-voltage characteristic. From ferroelectric study the energy density of –COOH, -OH loaded PVDF films are doubled and tripled compare to the pure PVDF film. This work may provide a rout for using different functionalize MWCNTs into polymer matrix to enhance either the energy density or conducting nature of polymer nanocomposite.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.4980051