Plasma is a (partially) ionized gas in which ions, electrons, and photons are present as well as radicals and molecules in an excited state
Surface activation with Openair® plasma is especially effective when nonpolar materials have to be treated, such as plastics that consist of long-chain polymers. Such nonpolar surfaces are difficult to bond and coat. Because plasma energy selectively modifies the surface tension, these materials can be processed easily and new material combinations can be produced, as in the adhesive bonding process.
Changes the surface chemical composition Selection of plasma source – introduce diverse functional groups on surface a. Plasma treatments with oxygen, ammonia, or air – generates carboxyl groups or amine groups b. Air or argon treatments When nanofibers were soaked in a simulated body solution – calcium mineralization occurred on surface