Columbia Technology Ventures

Process for altering the surface chemistry of hydrophilic nanoparticles to minimize agglomeration in polymer nanocomposites

This technology is a process for modifying the surface chemistry of commercially available silicon dioxide (SiO2) nanoparticles without causing agglomeration, which can be utilized for the fabrication of high-performance nanocomposite materials.

Unmet Need: Method for controlling the dispersion of nanoparticles in bulk polymers

The addition of nanoparticles to bulk polymers to upgrade their mechanical, optical, and electrical properties is desirable for a variety of applications ranging from consumer electronics to automotive tires. The performance of these nanocomposite materials is highly dependent on the dispersion of the nanoparticles within the bulk material to achieve a high surface area-to-volume ratio. However, controlling the dispersion of nanoparticles in polymers is a major challenge, as nearly all nanoparticles agglomerate into larger structures when added to polymers, compromising the mechanical properties.

The Technology: Surface modification of nanoparticles to minimize agglomeration in polymer nanocomposites

The method modifies the particle surface with hydrophobic trimethylsilyl groups to enable dispersion in organic solvents. Mixture with the desired polymer and evaporation of the solvent results in a polymer nanocomposite with highly disperse nanoparticles, leading to improved mechanical properties. This technology can be utilized for the fabrication of high-performance nanocomposite materials for a wide range of industries.

Applications:

  • Manufacturing of materials for tires
  • Fabrication of electronic devices and components
  • Food packaging materials
  • Production of water treatment filters
  • Manufacturing of sensors
  • Construction of biological implants

Advantages:

  • Minimized agglomeration of nanoparticles
  • Enhanced nanoparticle dispersion within bulk material
  • Results in improved mechanical properties of polymer nanocomposites

Lead Inventor:

Marshall Tekell, Ph.D.

Patent Information:

Patent Pending

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