Our COOH Functionalized Single Walled-Double Walled Carbon Nanotubes are made by CCVD and purified and functionalized using concentrated acid chemistry. Carbon Nanotubes (CNTs) have proven to offer a unique properties of stiffness and strength largely due to their high aspect ratio and all carbon structure. The thermal and electrical conductivity found in CNTs is much higher than that of other conductive or fibrous additive materials. Surfactants are used to stabilize dispersions in DI Water or other aqueous solvent mixtures. The most common surfactants used are PVP, SDS, or SDBS. The carbon atoms in CNTs are arranged in a planar honeycomb lattice structure in which each atom is connected via a strong chemical bond to the three neighboring atoms. These strong bonds are the reason that the basal plane elastic modulus of graphite is one of the largest of any known material. Having such strong bonds at the atomic level as well as a high aspect ratio, Carbon Nanotubes are expected to be the ultimate high-strength fibers. COOH Functionalized Single Walled-Double Walled Carbon Nanotubes Specifications Outer Diameter: 1-4nm Inside Diameter: 0.8-1.6nm Length: 5-30um Ash: <1.5 wt% Purity: >90 wt% Additional MWNT content: >5wt% Amorphous Carbon Content: <3wt% Length: 5-30um Specific Surface Area: 407 m2/g Electrical Conductivity: >100 S/cm OH Functionalized SWNTs contain 3.9% OH groups COOH Functionalized SWNTs contain 2.7% COOH groups Bulk density:0.14 g/cm3 True density:~2.1 g/cm3 Cited in research: Used by the Jassby group (UCLA + UC Riverside + Technion + LBNL) in a one-step densified COOH-SWCNT film for 71 dB X-band EMI shielding. Read the EMI Shielding Spotlight — Yang et al., Carbon 214, 118370 (2023). Cited in research: Used by Tonga, Wei, Lahti (UMass Amherst) in PEDOT:PSS thermoelectric composites — PF = 22 µW/m·K², a 31× gain over pristine SWNT. Read the Thermoelectric Spotlight — Tonga et al., Int. J. Energy Res. 44(11), 9149-9156 (2020).
Try patented Flexiphene solvent based nanomaterial emulsions today and put the power of graphene to work in your formulations. Flexiphene is amphiphilic, tune-able by pH, sheet size, and degree of reduction. Flexiphene is transforming the material world! Contact us Today to arrange for your Flexiphene Emulsions!To Buy Flexiphene emulsions, please contact us with the solvent, materials, amount, and loading ratio you need. CTI Material’s patented Flexiphene solvent based nanomaterial emulsions are just what you need to disperse nanomaterials into solvents. Flexiphene works with SWNTs, MWNTs, and many other nanomaterials. Flexiphene are amphiphilic, tunable surfactant sheets, highly soluble in many solvents and can make colloidal dispersions of nanomaterials, stable for weeks to months. We typically work with NMP, DMF, THF, Acetone, & Ethanol solvents however many more are possible. Please contact us today and let us know what materials you require, the loading ratios, and solvents and we can quote it for you. Note- Hazmat shipping fees may apply. Prices depend on materials used and loading ratios. Flexiphene solvent based nanomaterial emulsions are transforming the material world!
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Silver nanowire (AgNW) ink is the leading solution for transparent conductive electrodes (TCEs) that require both high conductivity and optical transparency. At loadings that achieve sheet resistance below 10 Ohm/sq, AgNW films maintain optical transmittance above 85% — performance that rivals ITO at a fraction of the cost and with far superior flexibility. Unlike ITO, silver nanowire electrodes do not crack under bending, making them essential for rollable displays and conformable biosensors. Cheap Tubes synthesizes 30 nm outer diameter silver nanowires in-house at our Vermont facility, giving us direct quality control over aspect ratio, concentration, and lot-to-lot consistency — shipped at 25 mg/mL in isopropanol (IPA). Cheap Tubes supplies silver nanowire ink for transparent electrode applications in touch screens, OPV, and flexible electronics. Both ink types are formulated for compatibility with screen printing, gravure, flexographic, and inkjet deposition methods. Silver nanowire ink is the choice when optical transparency is required alongside low sheet resistance.
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Try patented Flexiphene Surfactant Solutions today and put the power of graphene to work in your formulations. Flexiphene is amphiphilic and compatible with water, solvents, and many other host matrices. To Buy Flexiphene, please contact us with the amount and loading ratio you need. Standard concentration is 2mgs/ml. Flexiphene is transforming the material world! CTI Material’s patented Flexiphene aqueous nanomaterial emulsions are just what you need to disperse nanomaterials into aqueous solutions. Flexiphene works with SWNTs, MWNTs, GNPs, and many other nanomaterials. Flexiphene are amphiphilic, tunable surfactant sheets, highly soluble in many solvents and can make colloidal dispersions of nanomaterials, stable for weeks to months. We typically work with Di Water and can modify the solution if required. Please contact us today and let us know what materials you require, the loading ratios, and solvents and we can quote it for you. Prices depend on materials used and loading ratios. Flexiphene aqueous nanomaterial emulsions are transforming the material world!
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Amine | -NH₂ | Basic, highly water-dispersible; reacts with COOH, epoxides, aldehydes | Drug delivery, biosensors, crosslinked epoxy composites Amine (-NH2) groups are introduced via diamine coupling to -COOH and provide direct bonding to epoxy resins and conjugation chemistry to biomolecules via standard NHS/EDC coupling. -COOH and -NH2 functionalized MWCNTs are the standard substrates for biomolecule conjugation... use glutaraldehyde or NHS-PEG-NHS linkers between -NH2 surfaces and amine-bearing biomolecules. For dispersion in aqueous biological or analytical applications, -COOH and -NH₂ groups provide colloidal stability through electrostatic repulsion (high negative or positive zeta potential) without requiring surfactants that would need to be removed in downstream processing. This makes functionalized CNTs the preferred choice for drug delivery systems, biosensors, and diagnostic conjugation chemistry.
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