STRUCTUAL OBJECT COATED WITH SUPERHYDROPHBIC NANOSTRUCTURE COMPOSITE AND PROCESS FOR PRODUCING THE SAME
First Claim
1. A structural object coated with a superhydrophobic nanostructure composite, the structural object comprising a superhydrophobic surface obtained by coating a solid substrate (X) with a superhydrophobic nanostructure composite (Z1),wherein the superhydrophobic nanostructure composite (Z1) is a composite in which a hydrophobic group is bonded to silica (B) in a nanostructure (y1) containing the silica (B) and a polymer (A) having a polyethyleneimine skeleton (a).
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Accused Products
Abstract
The present invention relates to a structural object coated with a superhydrophobic nanostructure composite, the structural object being obtained by densely coating a surface of a solid substrate having a desired shape with a nanostructure obtained by combining a polymer having a polyethyleneimine skeleton with silica on the nanometer order, and bonding a hydrophobic group to the surface of the nanostructure, and a process for producing the structural object. The present invention also relates to a structural object coated with a superhydrophobic nanostructure composite, the structural object being obtained by removing the polymer having the polyethyleneimine skeleton from the nanostructure and bonding a hydrophobic group to the surface of the residual nanostructure containing silica as a main constituent component, and a process for producing the structural object. Furthermore, the present invention provides a method of using the structural object as a container for transferring an aqueous solution.
16 Citations
9 Claims
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1. A structural object coated with a superhydrophobic nanostructure composite, the structural object comprising a superhydrophobic surface obtained by coating a solid substrate (X) with a superhydrophobic nanostructure composite (Z1),
wherein the superhydrophobic nanostructure composite (Z1) is a composite in which a hydrophobic group is bonded to silica (B) in a nanostructure (y1) containing the silica (B) and a polymer (A) having a polyethyleneimine skeleton (a).
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4-7. -7. (canceled)
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8. A process for producing a structural object coated with a superhydrophobic nanostructure composite (Z1), the process comprising the steps of:
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(1-1) immersing a solid substrate (X) in a solution containing a polymer (A) having a polyethyleneimine skeleton (a) and then taking out the solid substrate (X) to form a polymer layer on a surface of the solid substrate (X); (1-2) immersing the solid substrate (X) having the polymer layer obtained in the step (1-1) into a silica source solution (B′
) to deposit silica (B) in the polymer layer formed on the surface of the solid substrate (X), thereby forming a nanostructure (y1); and(1-3) treating the surface of the nanostructure (y1) on the solid substrate obtained in the step (1-2) with a silane coupling agent having a hydrophobic group.
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9. A process for producing a structure coated with a superhydrophobic nanostructure composite (Z2) in which a hydrophobic group is bonded to silica (B) in a nanostructure (y2) containing the silica (B) as a main constituent component, the process comprising the steps of:
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(2-1) immersing a solid substrate (X) in a solution containing a polymer (A) having a polyethyleneimine skeleton (a) and then taking out the solid substrate (X) to form a polymer layer on a surface of the solid substrate (X); (2-2) immersing the solid substrate (X) having the resultant polymer layer into a silica source solution (B′
) to precipitate silica (B) in the polymer layer formed on the surface of the solid substrate (X), thereby forming a nanostructure (y1);(2-3) calcining the solid substrate (X) coated with the nanostructure (y1) obtained in the (2-2) to remove the polymer (A) having the polyethyleneimine skeleton (a) from the nanostructure (y1), thereby forming the nanostructure (y2); and (2-4) treating the surface of the nanostructure (y2) on the solid substrate obtained in the step (2-3) with a silane coupling agent having a hydrophobic group.
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Specification