Atmospheric pressure plasma-induced graft polymerization

Details Atmospheric pressure plasma-induced graft polymerization Atmospheric pressure plasma-induced graft polymerization

C - Chemistry, Metallurgy

08

F

C08F 292/00 (2006.01) B01J 19/08 (2006.01) C08J 7/16 (2006.01)

Patent

CA 2668925

A method of modifying a polymeric, inorganic, or organic-functionalized substrate surface is provided. In one embodiment, an atmospheric pressure (AP) plasma stream is directed at a substrate surface, leading to the formation of surface-bound active sites that function as polymerization initiators. When contacted with a monomer or monomer solution, the active sites facilitate formation of a dense array of graft polymers covalently bound to the substrate surface. In another embodiment, an inorganic substrate is cleaned, conditioned in a humidity chamber, treated with an AP plasma, and contacted with a monomer or monomer solution to facilitate formation and growth of graft polymers on the substrate surface.

L'invention concerne un procédé de modification de la surface d'un substrat polymérique inorganique ou organique fonctionnalisé. Dans un mode de réalisation, un flux de plasma à pression atmosphérique (AP) est dirigé vers la surface du substrat, entraînant la formation de sites actifs reliés à la surface et servant d'activateurs de polymérisation. Lorsqu'ils viennent en contact avec un monomère ou une solution de monomère, les sites actifs facilitent la formation d'un réseau serré de polymères greffés liés par covalence à la surface du substrat. Dans un autre mode de réalisation, un substrat inorganique est nettoyé, conditionné dans une chambre humide, traité avec un plasma AP, et mis en contact avec un monomère ou une solution de monomère afin de faciliter la formation et la croissance de polymères greffés sur la surface du substrat.

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