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Key Documents

577030

Sigma-Aldrich

Polypyrrole

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conductivity 10-50 S/cm (pressed pellet)

Sinonimo/i:

PPy

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About This Item

Numero CAS:
Numero MDL:
Codice UNSPSC:
12352103
ID PubChem:
NACRES:
NA.23

Forma fisica

solid

Livello qualitativo

contiene

proprietary organic sulfonic acid as dopant

Caratteristiche più verdi

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

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Solubilità

H2O: insoluble
organic solvents: insoluble

Categoria alternativa più verde

InChI

1S/C4H5N/c1-2-4-5-3-1/h1-5H
KAESVJOAVNADME-UHFFFAOYSA-N

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Descrizione generale

Polypyrrole (PPy) is a widely used highly conductive and highly stable heterocyclic polymer. It is majorly used in electrochemical applications. It is a cost-efficient conducting polymer that has a stable oxidation and high solubility in water. It exhibits a high degree of flexibility than polyaniline and has a density that facilitates a higher capacitance per unit volume.
PPy may be prepared by a standard electrochemical technique. It may also be prepared by reacting -napthalene sulfonic acid (NSA) and ammonium peroxo-disulfate in aqueous medium. The charges on the surfaces can be easily modified by doping the polymer during its synthesis. Solubility and conductivity measurements of PPy doped with camphor sulfonic and dodecyl benzene sulfonic acid have been reported. Lectrosensitivity and lower oxidation potential of PPy make it potentially useful for drug delivery, chemical sensors, batteries, ion selective electrodes, biosensor and biochemistry research.
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Green Chemistry. This product is used in energy conversion and storage, thus has been enhanced for energy efficiency. Click here for more information.

Applicazioni

Conductive additive for thermoplastics and thermosets. Polypropylene composites constitute the polymer electrolyte membrane fuel cell (PEMFC). Addition of PPy to polypropylene composites alters its conductivity.
PPy can be used for a variety of applications such as:
  • electrode materials for sensors used in electrocardiography (ECG)
  • formation of electrode material for a variety of energy storage applications
  • encapsulation of lithium sulfide (Li2S) as a high performance cathode material

PPy is mainly used in the fabrication of a variety of electrochemical devices, which include supercapacitors, chemical sensors, dye sensitized solar cells and lithium-ion batteries.
Conducting polymer.
Conductive additive for thermoplasitics and thermosets.

Confezionamento

Packaged in glass bottles

Altre note

Stable up to at least 290°C in air

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

dust mask type N95 (US), Eyeshields, Gloves


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Conducting polymers with superhydrophobic effects as anticorrosion coating
Intelligent Coatings for Corrosion Control, 409-430 (2014)
In-situ encapsulation of nickel nanoparticles in polypyrrole nanofibres with enhanced performance for supercapacitor
Muhamad SU, et al.
Electrochimica Acta, 249(8), 9-15 (2017)
Electrochemistry of nucleic acids and proteins: towards electrochemical sensors for genomics and proteomics
Palecek E, et al.
Journal of Nanoscience and Nanotechnology, 1(1), 596-612 (2005)
Polypropylene composites for polymer electrolyte membrane fuel cell bipolar plates.
Yeetsorn R, et al.
Macromolecular Symposia, 264(1) (2008)
Darren Svirskis et al.
Therapeutic delivery, 4(3), 307-313 (2013-02-28)
Intrinsically conducting polymers, such as polypyrrole (PPy), have been utilized for drug delivery purposes as drug release rates can be tuned by electrical stimulation. Electrical stimulation can be used to switch the redox state of PPy, subsequently changing the electrostatic

Articoli

By altering the physicochemical properties, smart or intelligent drug delivery systems can be designed to deliver therapeutic molecules on-demand. Learn more about the application of stimuli-responsive materials in drug delivery.

The application of conducting polymers at the interface with biology is an exciting new trend in organic electronics research.

While dye sensitization as the basis for color photography has been accepted for a very long time,1 attempts to use this principle for the conversion of solar light to electricity generally had resulted only in very low photocurrents, below 100 nA/cm2.2

For several decades, the need for an environmentally sustainable and commercially viable source of energy has driven extensive research aimed at achieving high efficiency power generation systems that can be manufactured at low cost.

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