Abstract:
A method of forming a biocompatible or biologically inert article for use in an application in which the article will make contact with at least one tissue, organ, or fluid within a human or animal body is provided. The method generally comprises providing an article having an external surface; selecting chemical precursors; using a means to direct one or more chemical precursors towards or to apply such chemical precursors to the external surface; activating the chemical precursors by exposing said precursors to atmospheric pressure plasma; and grafting and/or cross-linking the chemical precursors to form a solid coating adjacent to the external surface of the article.
Abstract:
A method and apparatus is provided for the modification of the surface chemistry of solid nano- and micro-particles in order to tailor the properties and functions of these particles. The method generally involves the generation of an atmospheric plasma glow discharge and energetic species that undergo chemical reaction with the surface of the primary particles. The process includes the generation of energetic species to initiate reaction, optional delivery of a precursor fluid, optional delivery of chemical species for grafting, and delivery of separated and de-agglomerated particles into the plasma discharge exiting the plasma generation chamber.
Abstract:
In general, coated fibers, methods of bonding a coating to fibers, and composite materials prepared from coated fibers are provided. The coated fiber is created with a surface that is compatible with and bonds to the polymer resin used in composite materials. In another aspect, the coating may exhibit additional functionality, such as water repellency, fire resistance, or odor control. More specifically an atmospheric pressure plasma process is applied to the fibers to bond coating materials to the fiber surface and to cure the coating surrounding the fiber surface. Optionally, radiation is used in the process to cure the coating. Finally, composite materials and parts may be made from the coated fibers that exhibit high strength and improved mechanical properties over composites made with uncoated fibers. Alternatively, a natural fiber reinforced composite material is made from coated natural fibers that has improved mechanical properties and decreased water absorption.
Abstract:
A method of forming a biocompatible or biologically inert article for use in an application in which the article will make contact with at least one tissue, organ, or fluid within a human or animal body is provided. The method generally comprises providing an article having an external surface; selecting chemical precursors; using a means to direct one or more chemical precursors towards or to apply such chemical precursors to the external surface; activating the chemical precursors by exposing said precursors to atmospheric pressure plasma; and grafting and/or cross-linking the chemical precursors to form a solid coating adjacent to the external surface of the article.
Abstract:
In general, coated fibers, methods of bonding a coating to fibers, and composite materials prepared from coated fibers are provided. The coated fiber is created with a surface that is compatible with and bonds to the polymer resin used in composite materials. In another aspect, the coating may exhibit additional functionality, such as water repellency, fire resistance, or odor control. More specifically an atmospheric pressure plasma process is applied to the fibers to bond coating materials to the fiber surface and to cure the coating surrounding the fiber surface. Optionally, radiation is used in the process to cure the coating. Finally, composite materials and parts may be made from the coated fibers that exhibit high strength and improved mechanical properties over composites made with uncoated fibers. Alternatively, a natural fiber reinforced composite material is made from coated natural fibers that has improved mechanical properties and decreased water absorption.
Abstract:
A method and apparatus is provided for the modification of the surface chemistry of solid nano- and micro-particles in order to tailor the properties and functions of these particles. The method generally involves the generation of an atmospheric plasma glow discharge and energetic species that undergo chemical reaction with the surface of the primary particles. The process includes the generation of energetic species to initiate reaction, optional delivery of a precursor fluid, optional delivery of chemical species for grafting, and delivery of separated and de-agglomerated particles into the plasma discharge exiting the plasma generation chamber.