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577030

Sigma-Aldrich

Polypyrrole

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conductivity 10-50 S/cm (pressed pellet)

Synonym(s):

PPy

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About This Item

CAS Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.23

form

solid

Quality Level

contains

proprietary organic sulfonic acid as dopant

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Design for Energy Efficiency
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solubility

H2O: insoluble
organic solvents: insoluble

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InChI

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

InChI key

KAESVJOAVNADME-UHFFFAOYSA-N

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General description

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.
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Application

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.

Packaging

Packaged in glass bottles

Other Notes

Stable up to at least 290°C in air

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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)
Sensors Based on Conducting Polymers for Measurement of Physiological Parameters
Teran-Jimenez O, et al.
IEEE Sensors Journal, 17(8), 2492-2497 (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)
Facile synthesis of Li 2 S-polypyrrole composite structures for high-performance Li 2 S cathodes
She ZW, et al.
Energy & Environmental Science, 7(2), 672-676 (2014)

Articles

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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.

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.

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.

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