Method for preparing surfaces
AssigneesArkema France, Commissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsChristophe Navarro, Stéphanie Magnet, Xavier Chevalier, Raluca Tiron, Christophe Couderc
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Abstract
The invention relates to a surface preparation method using a combination of at least two polymers, which are the same or different, which are grafted hierarchically or multiply on a surface, and also to the use of this preparation method, more particularly in applications for controlling the surface energy of a substrate. The invention may allow a block polymer to be structured with a minimum of defects.
Claims21
Method for preparing a surface selected from silicon, silicon having a thermal or native oxide layer, germanium, platinum, tungsten, gold, titanium nitrides, graphenes, or BARC (bottom anti-reflecting coating), utilizing n random copolymers prepared by controlled radical polymerization, which are the same or different, n being an integer greater than or equal to 2, said method comprising the following n successive steps:
- contacting a solution or dispersion of polymer i, wherein is the successive integral values from 1 to n, with the surface to be treated, then evaporating a dissolution or dispersion solvent used for contacting the polymer i with the surface to be treated, followed by a step of chemical grafting to the surface;
- repeating the preceding step with the polymer j=i+1 on the surface treated by the polymer i in the preceding step;
- and
- followed by applying a block copolymer on the surface thus treated.
(canceled)
Method for controlling the structuring of a block copolymer on a surface selected from silicon, silicon having a thermal or native oxide layer, germanium, platinum, tungsten, gold, titanium nitrides, graphenes, or BARC (bottom anti-reflecting coating), utilizing n random copolymers prepared by controlled radical polymerization, which are the same or different, wherein n is an integer greater than or equal to 2, said method comprising the following n successive steps:
- contacting a solution or dispersion comprising a dissolution or dispersion solvent and polymer i, wherein i is the successive integral values from 1 to n, with the surface to be treated;
- evaporating the dissolution or dispersion solvent;
- chemically grafting the surface;
- repeating the preceding step with the polymer j=i+1 on the surface treated by the polymer i in the preceding step;
- and
- applying a block copolymer on the surface thus treated.
Dependencies are inferred from the claim text.