Лако-красочные материалы — производство

As effective as these surface modification processes might be, they present limitations in terms of the extent to which the surfaces of polymers can be modified. Plasma-induced grafting offers another method by which chemical functional groups can be incorporated. In this process, free radicals are generated on the surface of a polymer through the use of an inert gas plasma. Because of the nonreactive nature of the inert gas plasma, surface chemical modification of the polymer does not occur. If the polymer surface that has been

treated in this fashion is exposed to vapors of unsaturated monomers, these monomers then get attached to the surface of the polymer. A variety of vinyl monomers are available and the possibilities for incorporating many different chemical functional groups are end­less. Unlike surface modification, this is a two-step process that adds a degree of complex­ity. Few studies have appeared in the open literature, with the majority of such processes being used in proprietary applications [41,42]. This process is mentioned here as an option that is available to the surface engineer.