What are Helical Multi-Walled Carbon Nanotubes (MWCNTs)?

Helical Multi-Walled Carbon Nanotubes (MWCNTs) are a unique class of carbon nanotubes (CNTs) that exhibit a spiral or coiled morphology. This distinct structure provides enhanced mechanical flexibility, electrical conductivity, and thermal stability, making them highly valuable in advanced electronics, nanocomposites, and biomedical applications.

Chemical Properties and CAS Number

• Chemical Formula: C
• CAS Number: 308068-56-6
• Average Outer Diameter: 20-80 nm
• Inner Diameter: 5-20 nm
• Length: 1-50 µm
• Purity: > 95%
• Surface Area: 200-500 m²/g
• Electrical Conductivity: High
• Thermal Conductivity: > 3,000 W/m·K
• Appearance: Black powder

Applications of Helical Multi-Walled Carbon Nanotubes (MWCNTs)

1. Electronics & Sensors

• Used in flexible and stretchable electronics due to their helical structure.
• Improve electrical conductivity in transistors, supercapacitors, and sensors.
• Applied in wearable electronics for energy harvesting and self-powered systems.

2. Nanocomposites & Structural Materials

• Enhance mechanical strength and elasticity in polymers, ceramics, and coatings.
• Used in aerospace, automotive, and sports equipment for lightweight, high-strength composites.

3. Energy Storage & Batteries

• Improve electrode performance in lithium-ion batteries (LIBs) and supercapacitors.
• Increase energy density and charge-discharge cycles.
• Applied in hydrogen storage materials.

4. Biomedicine & Drug Delivery

• Functionalized MWCNTs are used for targeted drug delivery and biosensing.
• Applied in gene therapy and regenerative medicine.

5. Coatings & Conductive Inks

• Improve antistatic coatings and EMI shielding materials.
• Used in transparent conductive films (TCFs) and printed electronics.

6. Catalysis & Chemical Applications

• Act as efficient catalyst supports in fuel cells and hydrogen production.
• Used in nanofluidic and water purification systems.

Pricing of Helical Multi-Walled Carbon Nanotubes (MWCNTs)

• Lab-scale orders: $200 – $1,000 per gram
• Industrial-scale orders: $5,000 – $20,000 per kg
• Customized functionalization: Price varies based on surface modifications (-COOH, -OH, -NH2)

Factors Affecting Pricing

• Purity levels (>95% – 99%)
• Functionalization (-OH, -COOH, NH2 modifications)
• Bulk order quantities
• Market demand & production complexity
• Packaging & shipping costs

Conclusion

Helical Multi-Walled Carbon Nanotubes (MWCNTs) offer superior mechanical flexibility, electrical conductivity, and chemical tunability. Their applications span from flexible electronics, energy storage, and advanced nanocomposites to biomedical and catalysis fields.