Polymer nanocomposites with layered P-containing nanomaterials


Reference #:  00425

The University of South Carolina is offering licensing opportunities for this technology.


Polymer thin films play an increasingly important role in technological applications ranging from coatings, adhesives and lithography to organic light emitting diodes and various organic material based devices, including sensors.  Conventional nanocomposites are polymers which contain added filler resulting in materials that have enhanced properties such as an increase in tensile strength and stiffness while often reducing flammability.  The mechanism by which such a composite is formed involves the exfoliation and complete dispersion of the filler throughout the polymer matrix.

Invention Description:

This technology involves the development of new polymer nanocomposites containing dispersed inorganic layered materials with weight loadings of up to 80% that have been prepared as powders and films. The phosphonate compounds are known and some of their crystal structures have been published.

The current invention involves using Ti(O3PCH2CH2COOH)2 (titanium carboxy ethyl phosphonate), creating  a well defined layered structure, and exfoliating it followed by subsequent incorporation into a PET polymer matrix.

Potential Applications:

Ultra-high strength and ultra-light automotive parts could be created that have enhanced properties    such as an increase in tensile strength and stiffness with a reduction in flammability.

The major application focus for many Nano-composites today is in high-barrier packaging. These layered materials, if properly dispersed throughout the polymer matrix, will create a tortuous path for gases such as oxygen and carbon dioxide.  Much of the attention is on PET bottles, where Nano-composites demonstrate improved oxygen and carbon dioxide barrier.

Advantages and Benefits:

These polymer composites can improve polymers' stiffness, HDT (thermal properties), dimensional stability, gas barrier, electrical conductivity, and flame retardancy while also retaining most of the polymers' existing favorable characteristics.  Nanoparticles are so small and their aspect ratio (L/D) so high that properties improve with lower loadings and fewer penalties (such as higher density, brittleness, or loss of clarity) than with conventional reinforces like talc or glass.



New polymer nano-composites containing dispersed inorganic layered materials with weight loadings up to 80% have been prepared as powders and films.


Results from powder X-ray diffraction experiments indicated that the phenyl phosphonate remained exfoliated in the polymer matrix up to 11 wt %. 

Patent Information:
Title App Type Country Serial No. Patent No. File Date Issued Date Expire Date Patent Status
Polymer Composite Materials and Methods for Producing the Same Nationalized PCT United States 11/632,791 7,951,860 9/1/2009 5/31/2011 11/24/2026 Closed
For Information, Contact:
Technology Commercialization
University of South Carolina
Hans-Conrad Zur Loye
John Stone
Baolong Zhang
Tara Hansen
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