Structural investigation of anionic functional poly(vinyl alcohol) doped polypyrrole nanospheres

Yang, Chao; Mo, Haodao; Zang, Limin; Qiu, Jianhui; You, Hui; Yang, Xiaohu

doi:10.1007/s12221-014-2019-5

Cited by 3 publications

(3 citation statements)

References 29 publications

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“…3) could be obtained. In addition, since the peroxydisulfate molecules acted as oxidant in the polymerization system are also charged negatively, their diffusion rate to pyrrole monomers will be retarded (Yang et al 2014) and thus the polymerization rate slowed down, which is beneficial to form a regular spherical morphology for as-prepared PPy.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, the large molecular chain structure of anionic polyelectrolyte makes it more difficult to be removed from the conducting polymers than the small molecule acid, exhibiting a better stability once being doped in conducting polymers (Nguyen and de Vos 2004). In recent years, several works have demonstrated that using sodium alginate (SA) (Li et al 2011;Sahoo et al 2012), carboxymethylcellulose sodium (CMC) (Basavaraja et al 2012;Chou et al 2011;Peng et al 2012), poly(sodium-4-styrenesulfonate) (PSSNa) , and phosphorylated polyvinyl alcohol (PPVA) (Yang et al 2014) in the preparation process, various nanostructures of conducting polymers could be obtained.…”

Section: Introductionmentioning

confidence: 99%

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Size-controllable polypyrrole nanospheres synthesized in the presence of phosphorylated chitosan and their size effect in different applications

Wang

Cao

2015

J Nanopart Res

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The size-controllable polypyrrole (PPy) nanospheres are successfully synthesized by oxidative polymerization of pyrrole using N-methylene phosphonic chitosan (NMPC) as a structure-directing agent. By simply changing the amount of NMPC, the size of the PPy nanospheres can be adjusted from 190 to 50 nm in diameter. The spectrometric results suggest that the electrostatic interactions of phosphate groups in NMPC molecule with pyrrole ring might be a driving force for formation of the uniform and sizecontrollable PPy nanospheres. The PPy nanospheres with the diameter of 100 nm exhibit the largest capacity and a good cycling stability as electrode materials of supercapacitors. The as-prepared PPy nanospheres also can be combined with carbon dots to form composite nanospheres presenting enhanced fluorescence intensity, which show potential application in fluorescence detection.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Size-controllable polypyrrole nanospheres synthesized in the presence of phosphorylated chitosan and their size effect in different applications

Wang

Cao

2015

J Nanopart Res

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“…As a especial kind of cellulose, sisal microcrystalline cellulose is produced by sisal hemp. Sisal fiber is one of the most common nature fibers that is the most largely quantity and the most widely used [3][4][5]. Sisal is a renewable resource par excellence and can form part of the overall solution to climate change.…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole/sisal fiber composites for energy storage

Mo¹,

Zang²,

Yang³

et al. 2015

Proceedings of the 2015 International Conference on Power Electronics and Energy Engineering

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Abstract-Polypyrrole-based electrodes were fabricated for energy storage applications using sisal fibers as a substrate material. It was found that the PPy nanoparticles deposited on the surface of sisal fiber cellulose (SFC) connected to form a continuous sheath by taking along the microcrystalline cellulose template. The as-prepared nanocomposites demonstrated a mass-specific capacitance of 367 F/g at 200 mA/g current density in supercapacitor application. Moreover, SFC/PPy electrode retained about 57.8% of Cs retained when the current density increased five times. This work provides a straightforward method to utilize renewable resource sisal microcrystalline cellulose for conducting composite, which could apply in sensors, flexible electrodes, and flexible displays. It also opens a new field of potential applications of micrometre-scale natural microcrystalline cellulose.

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Conductivity and dielectric analysis of nanocolloidal polypyrrole particles functionalized with higher weight percentage of poly(styrene sulfonate) using the dispersion polymerization method

Maruthamuthu

Chandrasekaran

Manoharan

et al. 2016

Journal of Polymer Engineering

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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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Structural investigation of anionic functional poly(vinyl alcohol) doped polypyrrole nanospheres

Cited by 3 publications

References 29 publications

Size-controllable polypyrrole nanospheres synthesized in the presence of phosphorylated chitosan and their size effect in different applications

Size-controllable polypyrrole nanospheres synthesized in the presence of phosphorylated chitosan and their size effect in different applications

Polypyrrole/sisal fiber composites for energy storage

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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