Copper Oxide - NanoArc® Copper Oxide Nanomaterials From Nanophase Technologies Corporation

Topics Covered

Integrated Family of Technologies
Applications and Markets
    Wood Preservation
    Textile Fibers
    Marine Antifouling
    Permanent Coatings
    Thermoplastics
Products, Data and Specifications
    Typical Properties
    NanoArc® Copper Oxide EXP 0502
Copper Oxide Dispersions

Integrated Family of Technologies

As a leader in the field of nanomaterials technologies, Nanophase has evolved from solely a producer of nanoparticles into an integrator of commercially scaled nanomaterial technologies focused on market and customer applications. Nanophase Technologies Corporation manufactures a variety of nanocrystalline powders in commercial quantities. The nanocrystalline metal oxides typically have a mean particle size less than 100 nm, are non-porous single crystals, have defined surface chemistry, and are chemically pure. Further modification of these materials often involves vapor-phase coating to prepare a surface-modified dry powder, or liquid phase processing to prepare a dispersion that is compatible with the application. Nanophase’s family of integrated technologies economically produces nanocrystalline materials and then nanoengineers those materials to fit customer’s needs.

Figure 1. Nanophase development process

Nanophase’s development process is designed to produce the most advantageous nanomaterials solution for an application. The foundation technologies are the patented Physical Vapor Synthesis (PVS) process and patent pending NanoArc® Synthesis (NAS) process. These processes use plasma energy to produce pure, non-agglomerated, non-porous, single-phase metal and mixed metal oxide nanoparticles at annual capacities measured in tens of thousands of kilograms per reactor. Nanoparticle size and surface chemistry can be tailored for applications as the nanomaterial is produced.

Applications and Markets

  • Wood Preservation
  • Textile Fibers
  • Marine Antifouling
  • Permanent Coatings
  • Thermoplastics

Wood Preservation

Due to the small size of the nanomaterials, penetration into a porous surface rather than simple surface adhesion can be achieved. With the discontinuation of CCA wood preservation materials for residential uses by the end of 2003, the wood industry is eagerly searching for cost-effective long-lasting anti-microbial products that will allow wood to perform well in outdoor applications. New formulations are usually reported as being more health-friendly and environmental-friendly, but longevity of performance is often missing. The incorporation of NanoArc® products, including copper oxide into the wood preservation formula helps to provide the required longevity of performance.

Textile Fibers

Nanoparticles have been incorporated into products such as nylon, polypropylene and other polymers to provide long-term antimicrobial character even in harsh environments and after extensive thermal cycling. The need for minimizing or eliminating microbial growth on a variety of textile-based substrates has become a major topic of discussion in numerous industries, including healthcare, home furnishings, filtration and apparel, among others. NanoArc® copper oxide, due to the small particle size, can be readily incorporated into synthetic fibers such as Nylon prior to extrusion through spinnerets to impart antimicrobial activity with minimal effects on color and clarity, surface gloss, physical properties and melt flow properties. NanoTek® products may also be incorporated into coatings that can be applied to staple fibers to impart antimicrobial activity. Such applications include carpet fibers, water filters of various types, fabrics for use in healthcare facilities and various institutions, activewear and other apparel, home furnishings and a variety of non-woven applications including the transportation and bedding industries.

Marine Antifouling

Due to the small size of the nanomaterials, the particles are held in the coating lattice and are not readily leached out of the coating by the marine environment, while slowly releasing ions to help provide longer-term anti-fouling character. By the end of 2003, tributyl tin compounds will no longer be approved for use in marine antifouling coatings by the EPA. The need for longevity of antimicrobial activity in marine environments has been recognized, and is not fully addressed using only combinations of organic biocides and copper oxide. NanoArc® copper oxide can reside permanently in marine coating formulations and can increase the lifetime of the antimicrobial activity, meaning that cleaning and re-application cycles can be extended.

Permanent Coatings

Long-term antimicrobial activity can be imparted in many coating formulations through the incorporation of nanomaterials. The desire for permanent coatings to impart long-term antimicrobial or bacteria-stat properties to coated products has been expressed in a variety of industries, including healthcare, industrial and institutional cleaning, food processing, food service, and general paints and coatings. NanoArc® copper oxide can be fully dispersed into a wide variety of coating formulations, including urethanes, acrylics and vinyl acetates and have shown utility in UV curable and thermosetting coatings as well as in water-based coating systems.

Thermoplastics

Long-term antimicrobial needs in various plastic, rubber and composite materials have been increasing in recent years. Nanomaterials can provide cost-effective longevity of activity even in harsh environments and after significant thermal history, separating them from the more unstable organic biocides. NanoArc® copper oxide can be fully dispersed into thermoplastic product formulations that are subsequently fabricated via injection molding, extrusion, blow molding, thermoforming or other typical plastic fabrication techniques. Antimicrobial activities are imparted to the article while the small particle size results in minimal effects on color, clarity, surface gloss, physical properties and melt flow properties of the finished product. Applications for antimicrobial plastic parts include children’s toys, refrigerator liners and other appliance parts, interior and exterior wall coverings, adhesives, caulks and sealants and food processing and food service equipment.

Products, Data and Specifications

Figure 2. NanoArc® Copper Oxide

Typical Properties

  • CuO, Purity = 99+%
  • APS 29 nm (determined from  SSA)
  • SSA = 32 m2/g (BET)
  • Appearance = Black powder
  • True Density = 6.5 g/cc
  • Morphology = Equi-axed and nearly spherical
  • Crystal Phase = Monoclinic
  • Copper Oxide Nanopowders

NanoArc® Copper Oxide EXP 0502

NanoTek® Copper Oxide is suitable for catalytic and protective applications such as wood preservation or marine antifouling.  These particles resist leaching and can reside permanently in marine coating formulations.

Copper Oxide Dispersions

Nanophase has worked diligently for years to develop expertise in dispersing nanomaterials in water, polar organics and non-polar organics.  We offer most of our products in one or more standard dispersions.  We also offer the service of dispersing a nanomaterial in the bulk medium of your choice as long as it is of low viscosity, non toxic, and has a flash point greater than 100°F.

Date Added: Sep 13, 2006 | Updated: Jun 11, 2013
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