Preparation of Polymer-Immobilized Nanoparticles by Plasma Polymerization

Preparation of Polymer-Immobilized Nanoparticles by Plasma Polymerization 

Plasma polymerizations permit of thin (50-100 nm), virtually defect-free films on most supports. Polymerizations in plasmas are not restricted by the choice of material and the support s shape. Therefore, this technique is weU suited for the preparation of microencapsulated nanoparticles (the so-called metal-doped polymeric films).  

Thin composite films are formed by simultaneous polymerization of compounds during the vacuum evaporation of metals. Modifications have been reported using different modes of preparation and introducing nanoparticles. One version includes simultaneous evaporation of a monomer and metal from different sources, while another relies on the combination of plasma polymerization and metal evaporation. Plasma-induced graft polymerization of traditional monomers (e.g., vinylim-idazole on a capron film) was carried out during metal evaporation. The plasma polymerization of organometallic compoimds is of special interest. For example, plasma-induced polymerization of diethylberyllimn is remarkable for the simplicity of the equipment required.  

The volume fraction (or the filling factor) of the metal embedded into the met-allopolymeric material is calculated by equation  

In summary, the polymerization in a glow discharge makes it possible to produce thin polymeric films of controlled size on the surface of nanoparticles prepared 

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B. Preparation of Polymer-Immobilized Nanoparticles by Plasma Polymerization... 

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