Molecular weight effect of PS latex particles on optical and electrical percolations of PS latex/MWCNT nanocomposite films

The effects of molecular weight ( ) of polystyrene (PS) latex particles on optical and electrical percolations of multi-walled carbon nanotube (MWCNT)-added nanocomposite films were reported. Three different latex particle solutions, each having different , were first mixed with MWCNT dispersions at...

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Bibliographic Details
Published in:Phase transitions 2021-10, Vol.94 (10), p.715-730
Main Authors: Demirbay, Baris, Uğur, Şaziye
Format: Article
Language:English
Subjects:
critical exponents
Dispersions
electrical conductivity
Exponents
Glass substrates
Latex
Molecular weight
Multi wall carbon nanotubes
Nanocomposites
Percolation
percolation theory
phase transitions
Polymer nanocomposites
polymer physics
Polystyrene resins
Surface resistivity
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Summary:The effects of molecular weight ( ) of polystyrene (PS) latex particles on optical and electrical percolations of multi-walled carbon nanotube (MWCNT)-added nanocomposite films were reported. Three different latex particle solutions, each having different , were first mixed with MWCNT dispersions at various mass fractions between 0 and 20 wt.% to prepare nanocomposites, and then the drop-casting method was employed to coat glass substrates by nanocomposite films. Surface resistivity, photon transmission and scanning electron microscopy measurements were performed on prepared films. As a result, the of latex particles had no influence on both optical, and electrical percolation, thresholds and the same threshold values were determined as 1.5 wt.%. Upon decreasing the latex , a steady reduction from 3.99 to 2.28 was observed for the critical exponents of electrical percolation, whereas almost similar critical exponents of optical percolation (averaged ) were found without any trend.
ISSN:0141-1594
1029-0338
DOI:10.1080/01411594.2021.1967952