Multi Walled Carbon Nanotubes, Purity: > 96% Outside Diameter: 48-78 nm

Technical Specification:

1. Material Composition:
   • Structure: Multi-Walled Carbon Nanotubes (MWCNTs).
     • Composed of multiple concentric graphene cylinders.
   • Purity: >96%.
     • Minimal impurities, such as amorphous carbon or residual catalysts.
   • Outer Diameter: 48–78 nm.
     • Larger diameter allows for higher mechanical strength and bulk processing compatibility.
   • Inner Diameter: Typically ~10–20 nm, depending on synthesis.
   • Length: 10–50 µm, depending on processing and application.
2. Physical Properties:
   • Form: Black powder.
   • Specific Surface Area: 100–200 m²/g, depending on diameter and morphology.
   • Density: ~ 1.8–2.2 g/cm³, depending on packing and structural integrity.
3. Electrical and Thermal Properties:
   • Electrical Conductivity:
     • High, suitable for applications in conductive composites and coatings.
   • Thermal Conductivity:
     • Excellent, up to 2000 W/m·K along the tube axis.
4. Mechanical Properties:
   • Tensile Strength: ~ 10–30 GPa, depending on structural integrity and purity.
   • Elastic Modulus: ~ 0.8–1 TPa, offering significant stiffness.
5. Chemical Properties:
   • Chemical Stability:
     • Resistant to oxidation, acids, and bases under standard conditions.
   • Functionalization:
     • Can be chemically modified (e.g., hydroxyl, carboxyl groups) to enhance solubility and compatibility with other materials.
6. Packaging:
   • Available in sealed containers, typically ranging from 100 g to 5 kg or more for industrial use.

Applications:

1. Primary Applications:
   • Energy Storage:
     • Enhances electrode performance in lithium-ion batteries, supercapacitors, and fuel cells.
   • Conductive Composites:
     • Improves mechanical, electrical, and thermal properties of polymers, ceramics, and metals.
   • Coatings:
     • Used in antistatic coatings, electromagnetic shielding, and thermal interface materials.
2. Industries:
   • Electronics:
     • Applied in flexible circuits, conductive inks, and sensors.
   • Energy:
     • Improves efficiency and durability in renewable energy and energy storage systems.
   • Automotive:
     • Used in lightweight conductive materials and advanced battery systems.
   • Aerospace:
     • Reinforces lightweight materials for structural and thermal management applications.
   • Biomedical:
     • Serves in drug delivery systems, biosensors, and tissue scaffolds.
3. Advantages for Applications:
   • High Conductivity:
     • Excellent electrical and thermal performance for advanced electronic and thermal management solutions.
   • Mechanical Reinforcement:
     • Enhances strength and flexibility in composite materials.
   • Cost-Effective:
     • Larger diameter and slightly lower surface area provide cost advantages for bulk applications.
   • Chemical Versatility:
     • Functionalizable for compatibility with diverse matrices and processes.
4. Specialized Uses:
   • Electromagnetic Interference (EMI) Shielding:
     • Effective for shielding sensitive electronic devices.
   • Water Treatment:
     • Acts as an adsorbent for removing heavy metals and organic pollutants.
   • Sensors:
     • Improves sensitivity in gas and chemical detection.
   • Catalysis:
     • Serves as a support for metal nanoparticles in catalytic applications.
5. Challenges and Mitigation:
   • Dispersion:
     • MWCNTs tend to agglomerate in solvents.
       • Solution: Use surfactants, ultrasonication, or chemical functionalization to achieve stable dispersions.
   • Purity:
     • Residual impurities may affect specific applications.
       • Solution: Additional purification steps can be employed for ultra-pure requirements.
   • Processing Complexity:
     • Requires expertise for effective integration into various matrices.
       • Solution: Employ specialized dispersion and functionalization techniques.

Storage Guidelines:

• Temperature: Store in a cool, dry place, away from moisture and direct sunlight.
• Container: Keep in sealed, airtight containers to prevent contamination and oxidation.
• Handling: Use personal protective equipment (PPE) to avoid inhalation or skin contact with nanomaterials.

Summary:

Multi-Walled Carbon Nanotubes (MWCNTs) with >96% purity and an outer diameter of 48–78 nm are robust nanomaterials suited for a variety of industrial and research applications. Their high conductivity, mechanical strength, and thermal stability make them indispensable in energy storage, composites, coatings, and environmental technologies. Proper handling and dispersion techniques ensure their optimal performance and usability.