📄 Surfactant-Free Fabrication · High Conductivity · U.S. Patented

Cleaner Buckypapers.
Superior Properties. Every Sheet.

Buckypapers fabricated from Flexiphene™ dispersions are free of surfactant contamination — giving you higher conductivity, better mechanical integrity, and more consistent properties than papers made from conventionally dispersed nanocarbon. A platform material for filtration, EMI shielding, sensing, actuators, and lightweight structural applications.

U.S. Patents 10,049,783 / 11,961,630 B2. Samples provided under standard NDA & MTA agreements.

Zero Surfactant Residue
Uniform Nanocarbon Structure
90% Batch Reproducibility
Flexiphene™ Buckypaper — Key Advantages
0
Surfactant Residue
100% clean nanocarbon matrix
Pure performance
Lower Resistance
Validated in film applications
High conductivity
0%
Batch Yield
Reproducible lot to lot
Production reliable
GO+CNT
Multi-Allotrope
Graphene oxide + CNT hybrid
Synergistic structure
10×
Functional Density
vs. standard oxidized CNTs
High interfacial activity

Surfactants Ruin Buckypapers

Buckypaper quality depends entirely on the quality of the dispersion it's cast from. Conventional dispersions introduce contamination at the fabrication stage — contamination that can't be removed without destroying the paper itself.

❌ Conventional Buckypaper Problems

  • Surfactants trapped in the paper matrix create insulating barriers between nanocarbon particles — directly reducing conductivity
  • Washing out surfactants after filtration disrupts the nanocarbon network and degrades mechanical integrity
  • Agglomerated starting dispersions produce buckypaper with uneven density and inconsistent through-thickness properties
  • Residual surfactant interferes with surface chemistry in sensing, catalysis, and filtration applications
  • Batch-to-batch variation in the dispersion results in papers with different resistance and permeability — impossible to qualify

✅ Flexiphene™ Buckypapers

  • Zero surfactants in the dispersion means zero surfactant contamination in the final paper — conductivity is limited only by the nanocarbon network itself
  • No surfactant-washing step required — the paper retains structural integrity throughout fabrication
  • Uniform starting dispersion produces papers with homogeneous density, consistent pore structure, and predictable properties through the thickness
  • Clean nanocarbon surface is chemically active and available for functionalization, catalytic loading, and selective adsorption
  • 90% batch reproducibility in the dispersion translates directly to consistent buckypaper properties across production lots

What You Can Build With Flexiphene™ Buckypapers

📶

EMI Shielding Sheets

Thin, lightweight buckypaper EMI shields for electronics enclosures, aerospace avionics, and satellite payloads. High conductivity without the weight penalty of metal foil shielding.

🔍

Filtration Membranes

Selective filtration membranes with tunable pore structure for water purification, gas separation, and particle capture. Surfactant-free surface maintains selectivity and avoids fouling from residual contamination.

🔋

Supercapacitor Electrodes

Free-standing buckypaper electrodes for electric double-layer capacitors (EDLCs) and pseudocapacitors. High surface area and low resistance directly improve specific capacitance and power density.

🌡️

Thermal Management

Highly thermally conductive nanocarbon sheets for heat spreading in electronics, thermal interface materials, and lightweight thermal management systems in aerospace and high-power electronics.

💪

Structural Reinforcement Veils

Interleaving buckypaper veils between composite plies for z-direction reinforcement, delamination resistance, and multifunctional structural-electrical properties in advanced composite laminates.

🤖

Actuators & Sensors

Electromechanical actuators and piezoresistive sensors based on the large surface area, electrical responsiveness, and dimensional change of nanocarbon sheets under applied voltage or strain.

Electronics & Semiconductors Aerospace Energy Storage Water Treatment Defense Medical Devices Robotics & Automation Academic Research

Buckypaper FAQ

What is the typical buckypaper fabrication process with Flexiphene™?
The standard process is vacuum filtration of the Flexiphene™ dispersion through a membrane filter (PTFE, nylon, or mixed cellulose ester) followed by drying. The paper is then peeled from the filter. Because Flexiphene™ is surfactant-free, there's no washing step required — the paper retains its structural integrity and the nanocarbon surface remains chemically active. Our team provides detailed protocols tailored to your target basis weight, thickness, and application.
Can I functionalize the buckypaper surface after fabrication?
Yes — and this is a key advantage of surfactant-free fabrication. The nanocarbon surface in Flexiphene™-derived buckypapers is clean and chemically available for covalent functionalization, non-covalent adsorption, catalyst loading, and biological coating. Residual surfactant in conventional papers blocks active sites and reduces functionalization efficiency. Contact us to discuss surface chemistry options for your specific application.
What basis weights and thicknesses are achievable?
Basis weight and thickness are controlled by dispersion concentration and filtration volume. With Flexiphene™, papers typically range from 5 to 100+ µm depending on application requirements. Thinner papers (5–15 µm) work well for electrodes and sensors; thicker papers (30–100 µm) for structural and thermal management applications. Our team can assist with formulation adjustments to hit your target thickness.
Can Flexiphene™ produce magnetic buckypapers?
Yes — Flexiphene™ dispersions can be combined with magnetic nanoparticles (Fe₃O₄, FeCo) during fabrication to produce magnetically responsive buckypapers with combined structural, conductive, and magnetic properties. This is useful for magnetically actuated sensors, microwave absorption, and EMI shielding applications. Contact us to discuss formulation options.

Build Better Buckypapers with Flexiphene™

Request a sample dispersion kit with fabrication protocols. Our materials scientists will help you dial in basis weight, thickness, and surface chemistry for your specific application.

More Flexiphene™ Use Cases