Conductivity and dielectric analysis of nanocolloidal polypyrrole particles functionalized with higher weight percentage of poly(styrene sulfonate) using the dispersion polymerization method
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S. Maruthamuthu
,
J. Chandrasekaran
Abstract
Nanocolloidal polypyrrole/poly(styrene sulfonate) PPy:PSS composites were prepared by dispersion polymerization of pyrrole with 0.5 wt%, 1 wt%, 2.5 wt%, 5 wt%, 10 wt% and 15 wt% of PSS. Higher doping level of PPy was confirmed with increased S/N value of elemental analysis. Morphological variations of PPy composite matrix based on PSS were analyzed in which spherical shaped PPy particles of 20–40 nm were obtained for 1:1 wt% of PPy:PSS. Presence of higher concentration of PSS within the PPy matrix substantially improved its thermal stability. Dielectric properties were investigated using complex impedance analyzer as a function of frequency (50 Hz–5 MHz) and temperature between 30°C and 120°C. PPy, with improved dispersion, showed higher dielectric constant values up to 15 wt% of anionic polyelectrolyte PSS and the dielectric loss varied between 4.7 and 7.9 for different wt% of PSS. AC conductivity (σac) enhanced up to 1:1 wt% of PPy:PSS composite, which is found to be the optimum wt% in this study. DC conductivity was found to decrease after 1:1 wt% of PPy:PSS composite, which is due to excess oxidation, leading to reduced π conjugation of PPy chains. Higher dielectric constant values of composite, with relatively low dielectric loss values, indicate their potential usage in the electric and electronic industry.
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Artikel in diesem Heft
- Frontmatter
- Original articles
- Preparation of epoxy/acrylonitrile-butadiene-styrene copolymer/short carbon fiber composites with a self-made conical mixer
- Preparation and characterization of poly (amide-ester-imide)/Na+-MMT nanocomposite via ultrasonic method
- Polyurethane membrane with a cyclodextrin-modified carbon nanotube for pervaporation of phenol/water mixture
- Fabrication of chitosan/PEO nanofiber mats with mica by electrospinning
- Effect of cooling induced crystallization upon the properties of segmented thermoplastic polyurethanes
- Conductivity and dielectric analysis of nanocolloidal polypyrrole particles functionalized with higher weight percentage of poly(styrene sulfonate) using the dispersion polymerization method
- Mechanism and solutions of appearance defects on microfluidic chips manufactured by UV-curing assisted injection molding
- Effect of gas counter pressure on shrinkage and residual stress for injection molding process
- Ablation and mechanical investigation of heat vulcanizing silicone rubber (HVSR) composite containing carbon fibers
- Cavitation desulfurization in vulcanized rubber recycling under ultra-high pressure water jet
Artikel in diesem Heft
- Frontmatter
- Original articles
- Preparation of epoxy/acrylonitrile-butadiene-styrene copolymer/short carbon fiber composites with a self-made conical mixer
- Preparation and characterization of poly (amide-ester-imide)/Na+-MMT nanocomposite via ultrasonic method
- Polyurethane membrane with a cyclodextrin-modified carbon nanotube for pervaporation of phenol/water mixture
- Fabrication of chitosan/PEO nanofiber mats with mica by electrospinning
- Effect of cooling induced crystallization upon the properties of segmented thermoplastic polyurethanes
- Conductivity and dielectric analysis of nanocolloidal polypyrrole particles functionalized with higher weight percentage of poly(styrene sulfonate) using the dispersion polymerization method
- Mechanism and solutions of appearance defects on microfluidic chips manufactured by UV-curing assisted injection molding
- Effect of gas counter pressure on shrinkage and residual stress for injection molding process
- Ablation and mechanical investigation of heat vulcanizing silicone rubber (HVSR) composite containing carbon fibers
- Cavitation desulfurization in vulcanized rubber recycling under ultra-high pressure water jet
