Sigma-Aldrich Polypyrrole (PPy) is a doped, high-conductivity (30 S/cm, bulk) conductive polymer supplied as a solid composite containing 20 wt% polypyrrole loaded onto carbon black. The material is doped using a proprietary organic sulfonic acid, providing enhanced charge mobility, improved electrochemical responsiveness, and excellent oxidative stability up to 300 °C.

This engineered composite combines the high conductivity of PPy with the surface area and structural reinforcement of carbon black, producing a versatile conductive additive that is widely used in supercapacitors, lithium-ion batteries, fuel cells, chemical sensors, biosensors, thermoplastics, thermosets, and electronic inks.

As an enabling Greener Alternative Product, this polypyrrole is manufactured in alignment with energy-efficient green chemistry principles.

Key Features & Benefits

High Conductivity (30 S/cm, Bulk)

• Excellent electrical conductivity for advanced electrochemical devices
• Suitable for charge storage, sensing, and EMI applications
• Enhanced electron transport due to dopant incorporation

20 wt% Polypyrrole / Carbon Black Composite

• Combines PPy conductivity with high-surface-area carbon black
• Improves dispersion in polymer matrices and electrode slurries
• Enhances electrochemical performance and mechanical stability

Doped for Superior Performance

• Doped with a proprietary organic sulfonic acid dopant
• Improved charge-carrier mobility and structural stability
• Tunable surface charge properties for sensing and biosensor work

Thermally Stable & Highly Robust

• Decomposition/transition temperature >300 °C
• Chemically stable heterocyclic polymer backbone
• Insoluble in water and common organic solvents

Greener Alternative Product

• Designed in accordance with Green Chemistry Principles
• Energy-efficient production
• Sustainable enabling material for low-energy devices

Chemical & Regulatory Information

Applications

1. Energy Storage & Electrochemical Devices

• Supercapacitors
• Lithium-ion, sodium-ion, and hybrid batteries
• Conductive layers in dye-sensitized solar cells (DSSCs)
• Fuel cell electrode components

2. Sensors & Biosensors

• Chemical sensors (gas, pH, VOC detection)
• Electrochemical biosensors (glucose, DNA, enzyme-based)
• Electrosensitive actuator materials

3. Conductive Additives

• Thermoplastics and thermosets
• Conductive polymer composites
• Antistatic and EMI shielding materials
• Electronic inks and printable electronics

4. Advanced Materials & Research

• Smart materials and responsive polymers
• Catalytic supports
• Capacitive deionization systems
• Flexible electronics and wearable sensors

Physical Properties

Packaging

• Packaged in glass bottles to ensure stability and prevent contamination.
• Typical pack size:
  • 25 g (SKU: 530573-25G)

Sigma-Aldrich Polypyrrole (PPy), doped and loaded at 20 wt% onto carbon black, offers high conductivity, excellent thermal stability, and superior electrochemical performance, making it a top-tier material for sensors, supercapacitors, batteries, coatings, and conductive polymer composites. Its insolubility, robustness, and energy-efficient production make it ideal for advanced research and industrial applications.