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Plasma can be defined as a gas which is fully or partially ionized. 

April 24, 2019 Industrial Services
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Plasma can be defined as a gas which is fully or partially ionized. More precisely, plasma is a gaseous medium consisting of molecules, atoms, ions, and electrons. Owing to the presence of charged particles, plasma has electrical conductivity, therefore it may be strongly influenced by electric and magnetic fields.

Plasma, in broadest meaning, describes any gas which only 1% (or less) of its atoms are ionized. The density of plasma, however, specifies the nature of gas in much narrower and more extreme terms. The density of plasma determines the degree of ionization. According to this definition, low-density plasmas (e.g. ionization of only 1% of atoms) are typically called cold plasma.

As mentioned earlier, plasma has electrically charged gaseous particles (gaseous ions), and because of that, its particles may be accelerated under electrical and/or magnetic fields. Because of these features, the use of plasma (in broadest meaning, from cold plasma to high temperature/density plasma) has become commonplace in industrial and laboratory equipment.

Since plasma has high energy particles and its particles can be accelerated in the presence of electric/magnetic fields and hit the surfaces, it can be used in textiles surface modification, etching, and cleaning, polymerization, deposition and production of nanostructures. The collision of high-energy particles and their reaction with the surface of materials break the chains and lead to the formation of free radicals, while the properties of bulk materials remain constant.

Generally, the surface modifications by plasma can create or improve characteristics such as hydrophilicity, antistatic properties, capillary, chemical absorption, color absorption, printability, increasing the effective surface, creating active sites, adhesion and many other cases in produced textiles.

Application

  • Improving the color absorption and adhesion of non-uniform or polymeric containers surfaces.
  • Surface modification of fibers and polymers and altering their properties by changing the composition or structure.
  • Enhancing the hydrophilicity, antistatic properties and improving the adhesion properties in the fabrication of composite.

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