WO2009149935A2 - Procédé de réalisation d'une réplique d'une surface fonctionnelle - Google Patents

Procédé de réalisation d'une réplique d'une surface fonctionnelle Download PDF

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Publication number
WO2009149935A2
WO2009149935A2 PCT/EP2009/004214 EP2009004214W WO2009149935A2 WO 2009149935 A2 WO2009149935 A2 WO 2009149935A2 EP 2009004214 W EP2009004214 W EP 2009004214W WO 2009149935 A2 WO2009149935 A2 WO 2009149935A2
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WO
WIPO (PCT)
Prior art keywords
impression material
temperature
replica
structures
molded
Prior art date
Application number
PCT/EP2009/004214
Other languages
German (de)
English (en)
Other versions
WO2009149935A3 (fr
Inventor
Kerstin Koch
Stanislav Gorb
Wilhelm Barthlott
Anna Julia Schulte
Original Assignee
Rheinische Friedrich-Wilhelms-Universität Bonn
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Application filed by Rheinische Friedrich-Wilhelms-Universität Bonn filed Critical Rheinische Friedrich-Wilhelms-Universität Bonn
Publication of WO2009149935A2 publication Critical patent/WO2009149935A2/fr
Publication of WO2009149935A3 publication Critical patent/WO2009149935A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
    • B29C33/3857—Manufacturing moulds, e.g. shaping the mould surface by machining by making impressions of one or more parts of models, e.g. shaped articles and including possible subsequent assembly of the parts
    • B29C33/3878—Manufacturing moulds, e.g. shaping the mould surface by machining by making impressions of one or more parts of models, e.g. shaped articles and including possible subsequent assembly of the parts used as masters for making successive impressions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/40—Plastics, e.g. foam or rubber
    • B29C33/405—Elastomers, e.g. rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
    • B29C33/424—Moulding surfaces provided with means for marking or patterning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/003—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor characterised by the choice of material
    • B29C39/006—Monomers or prepolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/42—Casting under special conditions, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/0077—Special surfaces of prostheses, e.g. for improving ingrowth
    • A61F2002/0081—Special surfaces of prostheses, e.g. for improving ingrowth directly machined on the prosthetic surface, e.g. holes, grooves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2240/001—Designing or manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/0002—Lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping

Definitions

  • the invention relates to a method for the production of a replica of a functional surface, in which: a surface is molded with an impression material, - the negative thus produced is molded with a filling compound and thus a replica of the surface is obtained.
  • the invention relates to the surface as such and their use.
  • Functional surfaces play an increasingly important role in everyday life.
  • Such functional surfaces are, for example, superhydrophobic / ultrahydrophobic surfaces on which a water droplet occupies a contact angle> 150 °, super hydrophilic surfaces which completely wet and / or surfaces on which living beings, such as insects, find no or only limited support.
  • These functional surfaces usually have a very complex surface structure. Since there are a variety of such functional surfaces in nature, there is a need to mold them to provide for technical applications. But artificially produced surfaces must be molded usually in order to produce tools, such as rollers, stamps or the like, for their duplication.
  • the generic method is well known from the prior art and is well suited for molding temperature-insensitive surfaces whose structure is comparatively simple.
  • the structure of the surface is, however, only shaped inadequately.
  • some of the known methods require the application of a vacuum, making these methods unsuitable for many biological substrates because the vacuum significantly alters the nature of the substrate.
  • BESTATlGUNGSKOPiB Having aspect ratio and / or consists of temperature-sensitive, or living biological materials.
  • the process should be gentle and accurately depict the functional surface, ie not provide artifacts, such as due to shrinking processes or destruction of fragile structures.
  • complex surface structures can be molded which have an aspect ratio of up to 100: 1 and which are constructed of a soft, temperature-sensitive material, such as wax.
  • a first aspect of the invention relates to a method for producing a replica of a functional surface, in which:
  • the impression material during and / or before molding a temperature between -5 0 C and 15 0 C, more preferably a temperature ⁇ 0 to ⁇ 10 0 C, most preferably 0 0 C to 7 0 C.
  • the impression material is preferably polymerizable and / or crosslinkable. Materials with these properties are well known to those skilled in the art.
  • the impression material is applied in the not completely polymerized state on the surface and then polymerized in contact with the surface.
  • this polymerizable impression material is brought into contact with the surface to be molded at a temperature below room temperature. It has surprisingly been found that the delay in the polymerization reaction as a result of the temperature reduction has an advantageous effect on the quality of the impression.
  • the impression material is for at least 2 seconds, more preferably at least 5 seconds more preferably at least 10 seconds, most preferably at least 15 seconds, and especially at least 20 seconds in contact with the surface to be molded before the polymerization reaction commences.
  • the polymerization is completed in a maximum of 30 minutes, more preferably at most 25 minutes, even more preferably at most 20 minutes, most preferably at most 15 minutes, and most preferably at most 10 minutes.
  • the temperature dependence of the flow behavior of the impression material is reversible, i. after heating and renewed cooling, the flowability at least in a certain temperature range increases again with decreasing temperature.
  • this property of the impression material is not or only partially reversible.
  • the impression material can be chemically modified, preferably by polymerization, wherein due to the polymerization, the properties of the impression material change such that its fluidity does not increase again with decreasing temperature.
  • the impression material is then present in at least two states during the process of the invention: in the incompletely polymerized state (prepolymer, for example monomer or oligomer mixture) and in the polymerized state (polymer, completely polymerized).
  • the flow behavior of the prepolymer may increase with decreasing temperature (possibly reversibly), but need not.
  • the specific temperature range is above 0 ° C.
  • the impression material preferably has a flowability which is at least in the temperature range of -50 ⁇ 25 ° C., -25 ⁇ 25 ° C., 0 ⁇ 25 ° C., 25 ⁇ 25 ° 0 C, 50 ⁇ 25 0 C, 75 ⁇ 25 0 C or 100 ⁇ 25 ° C increases with decreasing temperature.
  • the impression material (if appropriate in the polymerized state) is preferably an elastomer.
  • Polyvinylsiloxanes are particularly preferred.
  • the impression material (optionally in the polymerized state) at room temperature has a rubber-like elasticity which allows, for example, also conical surface structures which are narrower at the base than at the terminal end, and form surface structures which are not oriented vertically. It was surprising for a person skilled in the art that it is possible with the method according to the invention to mold surface structures which have an aspect ratio of up to 100: 1 and which consist of a soft, temperature-sensitive material, such as, for example, wax. Because the flowability of the impression material preferably increases with decreasing temperature at least in a certain temperature range, the impression material is preferably cooled before and / or during molding, so that the structures to be shaped are not heated during molding and thus do not change their shape.
  • the inventive method is simple and inexpensive to perform.
  • the erf ⁇ ndungssiee method is suitable for the production of a replica of a functional surface.
  • Such surfaces have, for example, superhydrophobic, ultrahydrophobic, superhydrophilic or ultrahydrophilic properties and / or are designed such that e.g. an insect on it - if any - finds limited support.
  • these functional surfaces have structures whose size ranges from mm to nm.
  • any micro- and nanostructured surfaces e.g. engineered, structured surfaces of metals, polymers or silicon, or biological solids, e.g. Bone. Because of the preferably rubber-like elasticity of the cured impression material, even conical structures narrower at their base than at the terminal end and structures not oriented perpendicularly can be molded (thermosets that are brittle after curing and not deformable provide these Possibility not).
  • These structures are molded in the inventive method with an impression material, wherein the flowability of the impression material preferably increases at least in a certain temperature range with decreasing temperature.
  • impression material is any material that has the properties described above.
  • the impression material may consist of a single substance or may comprise a mixture of several substances.
  • the impression material preferably has a density of 1.1 to 1.3 g / cm 3 .
  • it is elastic in the temperature range from -60 0 C to 200 "C preferably 1 -50 0 C to 150 ° C.
  • the impression material is selected from the group of silicone resins, acrylic resins and / or the mixture or reaction products.
  • the impression material belongs to the group of silicone rubbers, in particular polyvinylsiloxanes.
  • HTV silicone rubbers hot and cold vulcanizing silicone rubbers (HTV / RTV).
  • the HTV silicone rubbers are usually plastically deformable, just still flowable materials containing fumed silica and crosslinking catalysts as organic peroxides and after vulcanization at temperatures greater than 100 0 C heat-resistant, between -100 0 C u. +250 0 C elastic silicone elastomers (silicone rubber) result, the z. B. also be used as sealing, damping, Elektroisoliermaterialien, cable sheathing and the like.
  • One-component and two-component systems can be distinguished in the case of the cold-curing or RTV silicone rubber compositions.
  • the first group (RTV-1) polymerizes slowly at room temperature under the influence of atmospheric moisture, the crosslinking being effected by condensation of SiOH groups to form Si-O bonds.
  • crosslinkers used are, for example, mixtures of silicic acid esters (eg ethyl silicate) and organotin compounds, the crosslinking reaction being the formation of an Si-O-Si bridge of Si-OR and Si-OH Alcohol elimination occurs.
  • the impression material is pressed into the surface and / or sucked.
  • the pressing takes place with an overpressure, while suction creates a negative pressure, which is applied in particular between the substrate and the impression material.
  • This preferred embodiment of the present invention has the advantage that the impression material applies as completely as possible to the surface to be shaped, so that their structures are completely molded.
  • the impression material is removed again from the surface to be shaped.
  • the at least partial solidification or hardening of the impression material is achieved and / or accelerated, for example, by at least partial removal of a solvent, by a chemical reaction (for example polymerization) and / or by a temperature change of the impression material.
  • the structure of the surface to be removed is at least partially removed. This is especially the case when the structure has been naturally or artificially applied to an existing substrate.
  • This preferred embodiment of the method according to the invention has the advantage that, for example, undercuts can be molded.
  • undercuts can be molded with the method according to the invention but also due to the elasticity of the impression material without the structure of the surface to be molded must be at least partially removed with it.
  • the structures which may be present in the impression material are subsequently removed.
  • This process step can also be carried out, for example, by a temperature change, in particular increase and / or with the aid of a solvent (for example an acid).
  • a solvent for example an acid
  • examples of such structures are technical, mineral or organic crystals, organic molecules, biological cells, etc.
  • the negative thus produced is then molded according to the invention with a filling compound.
  • the filling compound is preferably a hydrophobic substance, for example epoxy resin or a hydrophilic substance.
  • the negative and / or the filling material before and / or during their curing exposed to mechanical vibrations (tilting table, shaking plate, etc.) and / or short time (usually a few minutes) stored in vacuum (usually at a pressure of 0.1 bar or fewer).
  • the negative is particularly well formed.
  • the filling material usually cures and can be removed as a replica of the negative.
  • this process step also takes place with the aid of a solvent and / or under the influence of temperature.
  • filler material can affect the functional properties of the replica. With the same surface structure, it is possible to produce an ultrahydrophobic surface with a hydrophobic filling compound and an ultrahydrophile replica with a hydrophilic filling compound. The skilled person understands, however, that these properties can also be subsequently changed by a corresponding coating of the replica
  • replicas of arbitrary surfaces can be produced.
  • replicas of surfaces are produced in which a surface structure has been applied to a substrate.
  • the structures on the substrate are preferably produced by self-assembly of molecules from a solution or by vapor deposition, in particular by the physical vapor deposition method.
  • the resulting structures can be influenced in their arrangement by template effects of the substrates; i.e. the polarity and the molecular order of the substrates serve as templates for the applied molecules.
  • the structures growing on the substrate take this arrangement into the third dimension (epitaxy).
  • the substrate used is water-soluble silicon, highly ordered pyrolytic graphite (HOPG), epoxy resin and / or crystalline metals.
  • the surface structures preferably consist at least partially of aliphatic hydrocarbons (alkanes) and / or derivatives thereof (in particular alcohols, aldehydes, fatty acids and esters) and more preferably octacosan-1-ol crystals.
  • waxes or waxy substances are applied to the generated surfaces of the replicas, preferably by thermal vapor deposition (Physical Vapor Deposition).
  • thermal vapor deposition Physical Vapor Deposition
  • self-organization of these waxes or waxy substances hierarchical structures can be built in this way.
  • the application of the wax or waxy substances can take place in a single step.
  • the self-organization of the waxes can be influenced by temperature and / or organic solvents. This is particularly useful in the vapor deposition of several wax components.
  • the application can also be repeated several times, in particular twice, three times, four times or five times. If the substances are varied, then several nanostructures of different composition and possibly even different Licher size deposited. If a certain wax or a certain waxy substance is only slightly or not at all compatible with the surface of the replica, it may be advantageous if first a kind of adhesion promoter and then the wax or the waxy substance is applied to the surface of the replica becomes. As a bonding agent is then to choose a material which is sufficiently compatible with both the surface of the replica and with the wax or waxy substance. Suitable adhesion promoters are known to the person skilled in the art.
  • waxes or waxy substances are basically both natural and synthetic waxes.
  • waxes and waxy substances are substances which are essentially defined by their mechanical-physical properties. Their chemical composition and origin can be very different.
  • a cloth is preferred to be construed as a wax when it is kneadable at 20 0 C, solid to brittle hard, having a highly temperature-dependent consistency and solubility, having a coarse to fine-crystalline structure, color-translucent to opaque, but not glassy, over 40 0 C melts without decomposition, slightly above the melting point is slightly liquid (less viscous), and is polishable under light pressure.
  • the substance is preferably not a wax according to the DGF (DGF unit method M-1 1 (75)).
  • Examples of natural waxes are candelilla wax, carnauba wax, Japan wax, Esparota grass wax, cork wax, guaruma wax, rice germ oil wax, sugarcane wax, ouricury wax, montan wax, beeswax, shellac wax, spermaceti, lanolin (wool wax), burr fat, ceresin, ozokerite (earth wax).
  • Examples of synthetic waxes are petrolatum, paraffin waxes, microwaxes, chemically modified waxes (hard waxes), e.g. Montanester waxes, Sasol waxes, hydrogenated jojoba waxes and polyalkylene waxes and polyethylene glycol waxes.
  • waxy substances within the meaning of the invention. These preferably have at least 16, more preferably at least 20, even more preferably at least 24, most preferably at least 28 (eg, octacosan-1-ol), and especially at least 36 carbon atoms. Particularly preferred is hexatriacontane.
  • Suitable waxy compounds also include waxy silicones and other waxy silicon compounds.
  • Preferred fatty alcohols which are solid at room temperature are preferably those having at least 16 carbon atoms, in particular cetyl alcohol, stearyl alcohol, cetylstearyl alcohol or behenyl alcohol, wax esters of fatty acids with fatty alcohols which are also solid at room temperature and preferably contain in total at least 20, preferably at least 26, carbon atoms and comparable others Fatty substances, such as fatty ethers (eg distearyl ether) or ketones (eg stearone).
  • fatty ethers eg distearyl ether
  • ketones eg stearone
  • the surface of the replica can be modified in such a way that the resulting hierarchical structure is superhydrophobic and / or antiadhesive.
  • substances are chemically bound to the generated surfaces of the replicas, preferably hydrophilic substances or amphiphilic substances.
  • Suitable processes for the chemical bonding of substances or substance mixtures to surfaces are known to the person skilled in the art.
  • Chemical Vapor Deposition, Coating processes such as e.g. Dip coating be called.
  • hydrophilic or amphiphilic substances it may be preferable to first modify the surface of the replicas in order to make subsequent chemical bonding possible. Suitable methods for modifying the surfaces are known to those skilled in the art, e.g. Treatment with an atmospheric plasmatron.
  • the correspondingly chemically hydrophilized surface has a contact angle of at most 20 ° with respect to water, more preferably at most 15 °, more preferably at most 10 °, most preferably at most 5 ° and in particular at most 2 °.
  • amphiphilic substances are anionic surfactants, cationic surfactants and nonionic surfactants.
  • the amphiphilic substance has an HLB (hydrophilic-lipophilic balance) of 12 ⁇ 8, more preferably 12 ⁇ 6, even more preferably 12 ⁇ 4, most preferably 12 ⁇ 2, and most preferably 12 ⁇ 1.
  • the amphiphilic substance has an HLB value of 14 ⁇ 8, more preferably 14 ⁇ 6, even more preferably 14 ⁇ 4, most preferably 14 ⁇ 2, and most preferably 14 ⁇ 1.
  • the amphiphilic substance has an HLB value of 16 ⁇ 8, more preferably 16 ⁇ 6, even more preferably 16 ⁇ 4, most preferably 16 ⁇ 2, and most preferably 16 ⁇ 1.
  • the amphiphilic substance has an HLB of 18 + 8, more preferably 18 ⁇ 6, even more preferably 18 ⁇ 4, most preferably 18 + 2, and most preferably 18 ⁇ 1.
  • the amphiphilic substance has an HLB value of 20 + 8, more preferably 20 ⁇ 6, even more preferably 20 ⁇ 4, most preferably 20 + 2 and especially 20 ⁇ 1.
  • amphiphilic substance is N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N
  • a nonionic surfactant selected from the group consisting of fatty alcohols, sterols, polyoxyethylene fatty acid esters, polyoxypropylene fatty acid esters, alkyl polyglycosides, alkylphenol ethoxylates and propoxylates, sorbitan fatty acid esters, polyoxyethylene and polyoxypropylene sorbitan fatty acid esters, polyoxyethylene and polyoxypropylene fatty acid glycerides, polyoxyethylene and polyoxypropylene Fatty alcohol ethers, glycerol fatty acid mono-, di- and tri-esters and poloxamers; an anionic surfactant selected from the group consisting of fatty acid salts, salts of alkyl or alkylaryl sulfonic acids, and salts of alkyl or alkylaryl sulfates; or a quaternary ammonium compound.
  • the surface of the replica can be modified in such a way that the resulting hierarchical structure is superhydrophilic and / or highly adhesive.
  • the mean feature size of the hierarchical structures formed on the surface is at most 400 nm, more preferably at most 300 nm, even more preferably at most 200 nm, most preferably at most 150 nm and especially at most 100 nm.
  • Particularly preferred structures are platelets, sticks or tubes of 200 nm. 1000 nm height and 50-150 nm thickness of (diameter for tubes and rods of 100-150 nm) (eg wax tubes of lotus leaves).
  • the mean feature size of the hierarchical structures is in the range of 40 ⁇ 18 nm, more preferably 40 ⁇ 16 nm, even more preferably 40 ⁇ 14 nm, most preferably 40 ⁇ 12 nm, and most preferably 40 + 10 nm.
  • the average feature size of the hierarchical structures is in the range of 60 ⁇ 18 nm, more preferably 60 ⁇ 16 nm, more preferably 60 ⁇ 14 nm, most preferably 60 ⁇ 12 nm, and most preferably 60 ⁇ 10 nm.
  • the average feature size is the hierarchical structures in the range of 80 ⁇ 18 nm, more preferably 80 ⁇ 16 nm, even more preferably 80 ⁇ 14 nm, most preferably 80 ⁇ 12 nm and especially 80 ⁇ 10 nm.
  • Suitable methods for determining the average structure size are known in the art, for example Electron-microscopic methods.
  • the hierarchical structures on the surface of the replica are images of natural models which have subsequently been modified (preferably hydrophilic, amphiphilic or hydrophobic).
  • the individual structures therefore correspond essentially to a natural model, e.g. the surface structure of the leaf of a plant, plant hair, etc.
  • at least some of these structures have undercuts, i. Structures which require a separation angle of ⁇ 180 ° when detaching the replica from the negative or when detaching the negative from the original.
  • Another aspect of the invention relates to a surface obtainable by the method according to the invention.
  • the inventive surface hierarchical structures in both levels of the hierarchy with a Aspect ratio in the range of 2: 1 to 100: 1, more preferably having an aspect ratio of at least 5: 1, 10: 1 or 15: 1, more preferably having an aspect ratio of at least 20: 1, 25: 1 or 30: 1 , most preferably with an aspect ratio of at least 35: 1, 40: 1 or 45: 1 and in particular with an aspect ratio of at least 50: 1, 55: 1 or 60: 1.
  • these surfaces are used as a superhydrophobic or superhydrophilic surface.
  • a superhydrophobic surface is characterized in that a water droplet located thereon assumes at least a contact angle of 150 °, preferably ⁇ 150 ° and more preferably ⁇ 170 ° and that the rolling angle of a water droplet with a volume of 10 ⁇ l ⁇ 10 °, preferably ⁇ 5 °.
  • the rolling angle is the angle of inclination of the surface at which this water droplet automatically rolls off the surface.
  • Such surfaces are known to be self-cleaning.
  • a drop of water assumes a contact angle ⁇ 10 °, so that it completely wets.
  • the surfaces produced by the process according to the invention are suitable as antiadhesive surface on which, for example, insects find no support.
  • such surfaces may be placed around a plant, such as a tree, as rings, preventing the insects from climbing the tree, or placed in the window and door area, to prevent running insects from entering buildings.
  • the surfaces produced by the method according to the invention are particularly suitable for the reflection of light.
  • Such surfaces preferably consist of structures in the dimensions of the wavelength range of the light to be reflected.
  • the surfaces produced by the method according to the invention are particularly suitable as a structural basis for biomedical implants with optimized tissue growth.
  • the surfaces are modified with hydrophilic substances, for example with oligopeptides, proteins, polysaccharides, e.g. to achieve better compatibility or optimized tissue growth on the implant.
  • FIG. 1 shows an embodiment of the method according to the invention.
  • the impression material 2 is thereby and / or before cooled to a temperature of 0 to 7 0 C.
  • the structures 1.2 are embedded in the impression material (step B). Because the impression material 2 is cooled, the wax structure 1.2 is not changed during molding. The lowered temperature increases the flowability of the impression material so that it better encloses the structures 1.2.
  • the impression material 2 is removed from the substrate together with the structures 1.2 (step C) and then the structures 1.2 are removed from the impression material 2 (step D).
  • a solvent for example chloroform and / or an elevated temperature.
  • the resulting negative 5 of the surface to be molded 1 (step E) is then filled with a filling material 3, here acrylic resin, and thereby or after subjected to mechanical vibrations, so that the filling material 3, the negative 5 completely forms.
  • a negative pressure can be applied in order to draw off trapped gas from the filling compound or the boundary layer between the filling compound 3 and the negative 5. After the filling compound has cured, it is removed from the negative 5 and is now a replica 8 of the surface first
  • Figure 2 shows details of the impression.
  • pressure 6 is generated, which presses the impression material into the structure 1.2 of the surface 1.
  • the molding of the structures 1.2 is improved.
  • the molding can still be supported by applying a negative pressure, which pulls the impression material 2 into the structures.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Nanotechnology (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Materials For Medical Uses (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

La présente invention concerne un procédé de réalisation d'une réplique d'une surface fonctionnelle, procédé selon lequel une surface est moulée à l'aide d'un matériau moulable; le négatif ainsi réalisé est moulé à l'aide d'une matière de remplissage et une réplique de la surface est ainsi obtenue. L'invention concerne également la surface elle-même et son utilisation.
PCT/EP2009/004214 2008-06-13 2009-06-12 Procédé de réalisation d'une réplique d'une surface fonctionnelle WO2009149935A2 (fr)

Applications Claiming Priority (4)

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DE102008028142.5 2008-06-13
DE102008028142 2008-06-13
DE102008035866.5 2008-08-01
DE102008035866A DE102008035866A1 (de) 2008-06-13 2008-08-01 Verfahren zur Herstellung von einer Replik einer funktionalen Oberfläche

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WO2009149935A2 true WO2009149935A2 (fr) 2009-12-17
WO2009149935A3 WO2009149935A3 (fr) 2010-08-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017115704A1 (de) 2016-07-12 2018-04-12 Comprisetec Gmbh Bauteil zur reversiblen adhäsiven Anhaftung an einer glatten Fläche, Bausatz und Fertigungsverfahren

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015114312A1 (de) * 2015-08-28 2017-03-02 Airbus Defence and Space GmbH Herstellung von Faserverbundbauteilen unterschiedlicher Form

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6017217A (en) * 1998-04-02 2000-01-25 Wittrock; Paul High performance dental impression tray structure
WO2005068148A1 (fr) * 2004-01-06 2005-07-28 3M Innovative Properties Company Moule de transfert, procede de production de ce dernier et procede de production d'une structure fine
US20060214326A1 (en) * 2003-04-14 2006-09-28 Kim Tae W Resin composition for mold used in forming micropattern, and method for fabricating organic mold therefrom
EP1864777A1 (fr) * 2006-06-08 2007-12-12 DWI an der RWTH Aachen e.V. Structuration de hydrogels
US20100028604A1 (en) * 2008-08-01 2010-02-04 The Ohio State University Hierarchical structures for superhydrophobic surfaces and methods of making

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2545290A1 (de) * 1975-10-09 1977-04-21 Roehm Gmbh Verfahren zum polymerisieren mittels uv-licht
EP0446793B1 (fr) * 1990-03-15 1995-08-02 Nippon Oil Co., Ltd. Procédé de préparation d'un électrolyte polymère solide
US6641767B2 (en) * 2000-03-10 2003-11-04 3M Innovative Properties Company Methods for replication, replicated articles, and replication tools
DE102004026479B4 (de) * 2004-05-27 2006-05-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Erzeugnis mit Deckschicht und Abformschicht

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6017217A (en) * 1998-04-02 2000-01-25 Wittrock; Paul High performance dental impression tray structure
US20060214326A1 (en) * 2003-04-14 2006-09-28 Kim Tae W Resin composition for mold used in forming micropattern, and method for fabricating organic mold therefrom
WO2005068148A1 (fr) * 2004-01-06 2005-07-28 3M Innovative Properties Company Moule de transfert, procede de production de ce dernier et procede de production d'une structure fine
EP1864777A1 (fr) * 2006-06-08 2007-12-12 DWI an der RWTH Aachen e.V. Structuration de hydrogels
US20100028604A1 (en) * 2008-08-01 2010-02-04 The Ohio State University Hierarchical structures for superhydrophobic surfaces and methods of making

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Hee, Winston W.L.; Donovan, Terry, E.: "Polyvinyl siloxane impression materials: A review of properties and techniques" The Journal of Prosthetic Dentistry Bd. 68, Nr. 5, November 1992 (1992-11), Seiten 728-732, XP002579621 DOI: doi:10.1016/0022-3913(92)90192-D Gefunden im Internet: URL:http://www.sciencedirect.com> [gefunden am 2010-04-22] *
Koch, K.; Dommisse A.; Barthlott, W.; Gorb, S.N.: "The use of plant waxes as templates for micro- and nanopatterning of surfaces" Acta Biomaterialia Bd. 3, Nr. 6, 30. November 2007 (2007-11-30), Seiten 905-909, XP002579620 DOI: doi:10.1016/j.actbio.2007.05.013 Gefunden im Internet: URL:http://www.sciencedirect.com> [gefunden am 2010-04-22] *
Wagner, P.; Fürstner, R.; Barthlott, W.; Neinhuis, C.: "Quantitative assessment to the structural basis of water repellency in natural and technical surfaces" Journal of Experimental Botany Bd. 54, Nr. 385, 1. April 2004 (2004-04-01), Seiten 1295-1303, XP002579619 Gefunden im Internet: URL:http://jxb.oxfordjournals.org/cgi/content/abstract/54/385/1295> [gefunden am 2010-04-23] *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017115704A1 (de) 2016-07-12 2018-04-12 Comprisetec Gmbh Bauteil zur reversiblen adhäsiven Anhaftung an einer glatten Fläche, Bausatz und Fertigungsverfahren

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DE102008035866A1 (de) 2009-12-17

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