Limits...
Improving Electrical Conductivity, Thermal Stability, and Solubility of Polyaniline-Polypyrrole Nanocomposite by Doping with Anionic Spherical Polyelectrolyte Brushes.

Su N - Nanoscale Res Lett (2015)

Bottom Line: The extent to which anionic spherical polyelectrolyte brushes (ASPB) as dopant improved the performance of polyaniline-polypyrrole (PANI-PPy) nanocomposite was investigated.It was different from dopants such as SiO2, poly(sodium-p-styrenesulfonate) (PSS), and canonic spherical polyelectrolyte brushes (CSPB) which only enhanced the performance of PANI-PPy nanocomposite on one or two sides.In addition, the effects of polymerization temperature, the molecular weight of grafted polyelectrolyte brushes, and storage time on electrical conductivity were discussed.

View Article: PubMed Central - PubMed

Affiliation: School of Printing and Packaging Engineering, Shanghai Publishing and Printing College, Shanghai, 200093, China, suna@whu.edu.cn.

ABSTRACT
The extent to which anionic spherical polyelectrolyte brushes (ASPB) as dopant improved the performance of polyaniline-polypyrrole (PANI-PPy) nanocomposite was investigated. Different characterization and analytical methods including Fourier transform infrared spectroscopy (FTIR), thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM), and X-ray diffraction (XRD) confirmed that ASPB serving as dopant could improve the comprehensive properties of PANI-PPy nanocomposite. It was different from dopants such as SiO2, poly(sodium-p-styrenesulfonate) (PSS), and canonic spherical polyelectrolyte brushes (CSPB) which only enhanced the performance of PANI-PPy nanocomposite on one or two sides. The electrical conductivity of (PANI-PPy)/ASPB nanocomposite at room temperature was 8.3 S/cm, which was higher than that of PANI-PPy (2.1 S/cm), (PANI-PPy)/PSS (6.8 S/cm), (PANI-PPy)/SiO2 (7.2 S/cm), and (PANI-PPy)/CSPB (2.2 S/cm). Meanwhile, (PANI-PPy)/ASPB nanocomposite possessed enhanced thermal stability and good solubility. In addition, the effects of polymerization temperature, the molecular weight of grafted polyelectrolyte brushes, and storage time on electrical conductivity were discussed.

No MeSH data available.


Related in: MedlinePlus

Schematic representation of the synthesis of (PANI-PPy)/ASPB nanocomposite
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4514728&req=5

Fig1: Schematic representation of the synthesis of (PANI-PPy)/ASPB nanocomposite

Mentions: In this paper, we presented a facile method for the synthesis of (PANI-PPy)/ASPB nanocomposite by chemical oxidative polymerization, and the synthesis process is shown in Fig. 1. In a typical procedure, 92 mg of ASPB was firstly added into 25.2 mL of 2 M HCl (aq) with ultrasonic dispersion for 20 min, and then 1.8 mL of aniline and 1.4 mL of pyrrole were added. After the mixture was cooled to 5 °C and degassed under a flow of N2 for 20 min, copolymerization was initiated by dissolving 4.5 g of APS in 12.6 mL of 2 M HCl (aq). After 6 h, the products were collected via filtration and washed with ethanol and distilled water for three times to remove small molecular compounds and unreacted monomers. The resulting products were vacuum dried at 60 °C for 12 h. In order to compare the doping effect of different dopants involving ASPB, PSS, SiO2, and CSPB, (PANI-PPy)/PSS, (PANI-PPy)/SiO2, (PANI-PPy)/CSPB, and PANI-PPy nanocomposites were synthesized.Fig. 1


Improving Electrical Conductivity, Thermal Stability, and Solubility of Polyaniline-Polypyrrole Nanocomposite by Doping with Anionic Spherical Polyelectrolyte Brushes.

Su N - Nanoscale Res Lett (2015)

Schematic representation of the synthesis of (PANI-PPy)/ASPB nanocomposite
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4514728&req=5

Fig1: Schematic representation of the synthesis of (PANI-PPy)/ASPB nanocomposite
Mentions: In this paper, we presented a facile method for the synthesis of (PANI-PPy)/ASPB nanocomposite by chemical oxidative polymerization, and the synthesis process is shown in Fig. 1. In a typical procedure, 92 mg of ASPB was firstly added into 25.2 mL of 2 M HCl (aq) with ultrasonic dispersion for 20 min, and then 1.8 mL of aniline and 1.4 mL of pyrrole were added. After the mixture was cooled to 5 °C and degassed under a flow of N2 for 20 min, copolymerization was initiated by dissolving 4.5 g of APS in 12.6 mL of 2 M HCl (aq). After 6 h, the products were collected via filtration and washed with ethanol and distilled water for three times to remove small molecular compounds and unreacted monomers. The resulting products were vacuum dried at 60 °C for 12 h. In order to compare the doping effect of different dopants involving ASPB, PSS, SiO2, and CSPB, (PANI-PPy)/PSS, (PANI-PPy)/SiO2, (PANI-PPy)/CSPB, and PANI-PPy nanocomposites were synthesized.Fig. 1

Bottom Line: The extent to which anionic spherical polyelectrolyte brushes (ASPB) as dopant improved the performance of polyaniline-polypyrrole (PANI-PPy) nanocomposite was investigated.It was different from dopants such as SiO2, poly(sodium-p-styrenesulfonate) (PSS), and canonic spherical polyelectrolyte brushes (CSPB) which only enhanced the performance of PANI-PPy nanocomposite on one or two sides.In addition, the effects of polymerization temperature, the molecular weight of grafted polyelectrolyte brushes, and storage time on electrical conductivity were discussed.

View Article: PubMed Central - PubMed

Affiliation: School of Printing and Packaging Engineering, Shanghai Publishing and Printing College, Shanghai, 200093, China, suna@whu.edu.cn.

ABSTRACT
The extent to which anionic spherical polyelectrolyte brushes (ASPB) as dopant improved the performance of polyaniline-polypyrrole (PANI-PPy) nanocomposite was investigated. Different characterization and analytical methods including Fourier transform infrared spectroscopy (FTIR), thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM), and X-ray diffraction (XRD) confirmed that ASPB serving as dopant could improve the comprehensive properties of PANI-PPy nanocomposite. It was different from dopants such as SiO2, poly(sodium-p-styrenesulfonate) (PSS), and canonic spherical polyelectrolyte brushes (CSPB) which only enhanced the performance of PANI-PPy nanocomposite on one or two sides. The electrical conductivity of (PANI-PPy)/ASPB nanocomposite at room temperature was 8.3 S/cm, which was higher than that of PANI-PPy (2.1 S/cm), (PANI-PPy)/PSS (6.8 S/cm), (PANI-PPy)/SiO2 (7.2 S/cm), and (PANI-PPy)/CSPB (2.2 S/cm). Meanwhile, (PANI-PPy)/ASPB nanocomposite possessed enhanced thermal stability and good solubility. In addition, the effects of polymerization temperature, the molecular weight of grafted polyelectrolyte brushes, and storage time on electrical conductivity were discussed.

No MeSH data available.


Related in: MedlinePlus