WO2012153682A1 - 基材付き薄膜フィルム及びその製造方法 - Google Patents
基材付き薄膜フィルム及びその製造方法 Download PDFInfo
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- WO2012153682A1 WO2012153682A1 PCT/JP2012/061576 JP2012061576W WO2012153682A1 WO 2012153682 A1 WO2012153682 A1 WO 2012153682A1 JP 2012061576 W JP2012061576 W JP 2012061576W WO 2012153682 A1 WO2012153682 A1 WO 2012153682A1
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- thin film
- polyanion
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- polycation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L24/00—Surgical adhesives or cements; Adhesives for colostomy devices
- A61L24/04—Surgical adhesives or cements; Adhesives for colostomy devices containing macromolecular materials
- A61L24/08—Polysaccharides
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L24/00—Surgical adhesives or cements; Adhesives for colostomy devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/70—Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
- A61K9/7007—Drug-containing films, membranes or sheets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31971—Of carbohydrate
Definitions
- the present invention relates to a thin film with a substrate and a method for producing the same.
- fibrin glue composed of fibrinogen, blood coagulation factor XIII and thrombin.
- fibrin glue uses fibrinogen derived from human plasma, there is a possibility that infectious pathogens such as viruses may be mixed, and it is necessary to mix several kinds of materials immediately before use, and it is easy to operate. There is a problem that it is inferior.
- cyanoacrylate-based tissue adhesives are commercially available as surgical tissue adhesives. Cyanoacrylate-based tissue adhesives have high curing speed and high adhesive strength, but lack flexibility after curing, and may generate harmful formaldehyde when decomposed in vivo. As pointed out.
- Patent Document 1 describes a medical adhesive formed by laminating a polyion complex film formed of a polycationic substance and a polyanionic substance.
- Non-Patent Document 1 describes a bioadhesive thin film in which chitosan and alginic acid are alternately laminated.
- the bioadhesive thin film described in Non-Patent Document 1 has a track record as a medical material, and is made by alternately laminating chitosan and alginate, which are polysaccharides having high biocompatibility and biodegradability. Yes, it is excellent in toughness and transparency, and has high adhesion.
- the thickness of the bioadhesive thin film is as thin as 75 nm, and when a soft biological tissue such as the lung is damaged, it is stable even if a sneezing load is applied by simply applying the bioadhesive thin film. There is an effect that can be closed.
- Non-Patent Document 1 the bioadhesive thin film described in Non-Patent Document 1 is manufactured by a spin coating method. Therefore, since many chemical solutions must be used at the time of manufacture, and it is necessary to form a film one by one, there are problems in economic efficiency and mass productivity, and it is difficult to produce industrially and is widely used. It has not reached.
- an object of the present invention is to provide a general-purpose thin film with a substrate and a method for producing the same.
- the present invention includes a base material and a thin film formed on the base material, the thin film includes an A layer formed using a solution containing a polycation, a polyanion, and a pH of 1. And a B layer formed using a solution of 6 to 5.4.
- the thin film with a substrate of the present invention has the above-described configuration, it is easy to produce industrially and can be widely used. Further, the thin film adheres to the affected part when attached to the affected part, has high adhesion to the tissue, and has sufficient strength as a tissue adhesive (bioadhesive thin film). Furthermore, since there is no fear of infection and the like and it is excellent in biological safety, it can be used simply and effectively as a tissue adhesive. Furthermore, pretreatment such as dissolution is not required, and the operability is extremely excellent.
- the solution containing the polyanion and having a pH of 1.6 to 5.4 is preferably a solution containing the polyanion and malic acid.
- a solution containing the polyanion and malic acid By containing malic acid, the pH of the solution can be maintained more stably, and the production efficiency of the thin film is further improved.
- the thin film is preferably one in which A layers and B layers are alternately laminated.
- a layer and the B layer are alternately laminated, a thin film excellent in mechanical strength and self-adhesiveness is obtained.
- the A layer and the B layer are alternately stacked not only when the one A layer and the one B layer are alternately stacked, but the A layer composed of a plurality of layers, This includes the case where B layers composed of a plurality of layers are alternately laminated.
- the polycation is preferably a cationic polymer having two or more amino groups in one molecule, more preferably a basic polysaccharide, a derivative thereof, or a salt thereof, chitosan, a derivative thereof, or the like. Particularly preferred is a salt of Thereby, it can be set as the thin film whose bioabsorbability was more excellent.
- the polyanion is preferably an anionic polymer having two or more carboxyl groups or carboxylate groups in one molecule, more preferably an acidic polysaccharide or a derivative thereof, or a salt thereof, alginic acid or a derivative thereof. Or a salt thereof is more preferable. Thereby, it can be set as the thin film whose biocompatibility was more excellent.
- the present invention also provides a layer containing polycation or polyanion on the surface of the substrate by contacting the substrate with a solution containing polycation or a solution containing polyanion and having a pH of 1.6 to 5.4.
- the production method of the present invention has the above configuration, a thin film with a substrate can be produced easily and quickly. Moreover, it is easy to produce industrially and can be widely used.
- a solution containing a polyanion and malic acid as a solution containing the polyanion and having a pH of 1.6 to 5.4.
- a solution containing a polyanion and malic acid By using a solution containing a polyanion and malic acid, the production efficiency is further improved.
- a versatile thin film with a substrate and a method for producing the same are provided.
- the thin film according to the present invention is particularly suitably used as an adhesive that can be applied to cells, tissues, organs, blood vessel walls, mucous membranes, corneas, skin, hair, nails and the like.
- the polycation refers to a compound having two or more cationic groups in one molecule
- the cationic group refers to a cationic group or a group that can be derived from a cationic group.
- the cationic group include an amino group; a monoalkylamino group such as a methylamino group or an ethylamino group; a dialkylamino group such as a dimethylamino group or a diethylamino group; an imino group; a guanidino group.
- the amino group may be —NH 3 + in which a proton is coordinated.
- a cationic polymer As the polycation, a cationic polymer is preferable.
- the cationic polymer refers to a polymer having two or more cationic groups in one molecule.
- the cationic polymer is preferably a polymer obtained by polymerizing a monomer having a cationic group.
- a cationic polymer an anionic polymer (to be described later) and a gel-like polyion complex can be formed in the presence of water, the polyion complex can exert a biological tissue adhesive action, and is harmless to the living body. Those are preferred.
- the cationic polymer is more preferably a bioabsorbable substance so that the affected tissue is healed and then biodegraded and absorbed into the living body.
- the cationic polymer is hydrophilic enough to be dissolved or swelled in an acidic aqueous solution, and has a property of being positively charged when a cationic group is bonded to a proton in the acidic aqueous solution.
- a polymer having two or more amino groups in one molecule is particularly preferable.
- Preferred examples of the cationic polymer include basic polysaccharides such as collagen, polyhistidine, ionene, chitosan, and aminated cellulose; homopolymers of basic amino acids such as polylysine, polyarginine, and a copolymer of lysine and arginine. And copolymers; basic vinyl polymers such as polyvinylamine, polyallylamine, polydivinylpyridine; and their salts (hydrochloride, acetate, etc.), polyethyleneimine, polyallylamine hydrochloride, polydiallyldimethylammonium chloride .
- a crosslinked polymer obtained by crosslinking the above-mentioned cationic polymer can also be used. Any known method can be used as a method of crosslinking the cationic polymer.
- a method in which the amino group of the cationic polymer is subjected to a condensation reaction with a dicarboxylic acid is preferable.
- a basic polysaccharide or a derivative thereof for example, an acetylated product
- a salt thereof is suitable.
- chitosan is preferable as the basic polysaccharide.
- Chitosan is a deacetylated product of chitin, and the degree of deacetylation is preferably in the range of 40 to 100%, more preferably in the range of 45 to 90%, because it is more excellent in bioabsorbability and water solubility. More preferably, it is more preferably in the range of 50 to 80%.
- the molecular weight of the cationic polymer is not particularly limited, but as the viscosity average molecular weight increases, the viscosity of the solution tends to increase during the production of the thin film with a base material, and casting tends to be difficult, and bioabsorbability is increased.
- the viscosity average molecular weight of the cationic polymer is preferably in the range of 1,000 to 500,000, more preferably in the range of 10,000 to 400,000. More preferably, it is in the range of 2,000 to 200,000.
- the “viscosity average molecular weight” may be evaluated by a viscosity method, which is a general measurement method. For example, from the intrinsic viscosity [ ⁇ ] measured based on JIS K 7367-3: 1999, M ⁇ May be calculated.
- a low molecular compound having two or more cationic groups in one molecule can be preferably used.
- the low molecular compound having two or more cationic groups in one molecule include low molecular diamines and polyamines.
- a compound having two amino groups in one molecule such as diaminoalkanes such as diaminoethane, diaminopropane, diaminobutane, diaminopentane, and diaminohexane, N- (lysyl) -diamino
- diaminoalkanes such as diaminoethane, diaminopropane, diaminobutane, diaminopentane, and diaminohexane
- mono- or dilysylaminoalkanes such as ethane, N, N ′-(dilysyl) -diaminoethane, N- (lysyl) -diaminohexane, N, N ′-(dilysyl) -diaminohexane, etc.
- examples thereof include compounds having 3 to 4 amino
- the concentration of the polycation in the solution containing the polycation is preferably 0.01 to 5.0% by mass, more preferably 0.02 to 2.0% by mass, and particularly preferably 0.05 to 1.0% by mass. .
- the viscosity of the solution containing the polycation is preferably in the range of 0.1 to 1000 mPa ⁇ s, more preferably in the range of 0.5 to 500 mPa ⁇ s, and in the range of 1 to 100 mPa ⁇ s. More preferably.
- the viscosity is a value measured at 20 ° C. with a sample amount of 10 mL using a tuning fork type vibration viscometer SV-10 manufactured by A & D.
- Two or more kinds of polycations may be used in combination in the solution containing polycations.
- any solvent can be used as the solvent for the solution containing the polycation as long as it can dissolve the polycation.
- water or an aqueous solution of inorganic salts can be used. Is appropriate.
- the solution containing the polycation does not need to be adjusted in pH, and a solution obtained by dissolving the polycation in a solvent can be used as it is.
- the pH can be 1.2 to 6.6.
- a polyanion means a compound having two or more anionic groups in one molecule, and an anionic group means an anion group or a group that can be derived from an anion group.
- the anionic group include a carboxyl group, a carboxylate group, a sulfuric acid group, a sulfonic acid group, and a phosphoric acid group.
- the polyanion is preferably an anionic polymer.
- the anionic polymer refers to a polymer having two or more anionic groups in one molecule.
- the anionic polymer is preferably a polymer obtained by polymerizing a monomer having an anionic group.
- a gel-like polyion complex can be formed with the above cationic polymer in the presence of water, and the polyion complex can exert an adhesive action on a living tissue, and has a harmful reaction to a living body. Less is preferred.
- the anionic polymer is more preferably a bioabsorbable substance so that the affected tissue is healed and then biodegraded and absorbed into the living body.
- anionic polymer those having hydrophilicity that can be dissolved or swelled in water and having a property of being negatively charged by dissociating protons or metal ions of the anionic group in water are preferable. Used for.
- anionic polymer a polymer having two or more carboxyl groups or carboxylate groups in one molecule is particularly preferable.
- anionic polymer examples include natural acidic polysaccharides having an anionic group such as a carboxyl group, a carboxylate group or a sulfate group such as alginic acid, hyaluronic acid, chondroitin sulfate, dextran sulfate, pectin and cherry, and derivatives thereof; Cellulose, dextran, starch, and other acidic polysaccharides and derivatives thereof that are artificially synthesized by binding anionic groups to polysaccharides that do not have anionic groups such as carboxyl groups, carboxylate groups, or sulfate groups in nature (for example, , Carboxymethyl cellulose, carboxymethyl dextran, carboxymethyl starch, carboxymethyl chitosan, sulfated cellulose and sulfated dextran and their derivatives); polyglutamic acid, polyaspartic acid, glutamic acid and aspartic acid Copolymers homopolymers and copolymers;
- Examples of the derivatives of acidic polysaccharides include, for example, those obtained by reacting part or all of hydroxyl groups with acetic acid, nitric acid, sulfuric acid, phosphoric acid, etc .; and part of carboxyl groups or carboxylate groups such as ethylene glycol and propylene glycol.
- the compound esterified with the low molecular alcohol is mentioned.
- the derivative of acidic polysaccharide include alginic acid ethylene glycol ester, alginic acid propylene glycol ester, hyaluronic acid ethylene glycol ester, hyaluronic acid propylene glycol ester and the like.
- the degree of esterification in these derivatives is not particularly limited, but if the degree of esterification becomes too high, the proportion of carboxyl groups or carboxylate groups, that is, the anionicity decreases, and polyions formed with the cationic polymer The mechanical strength of the complex tends to decrease. Therefore, the degree of esterification in the above derivative is preferably within the range of 40 to 100%, more preferably within the range of 45 to 90%, and even more preferably within the range of 50 to 80%.
- salts of acidic polysaccharides or derivatives of acidic polysaccharides include salts of these with monovalent ions, for example, alkali metal salts such as sodium salts and potassium salts; ammonium salts.
- a crosslinked polymer obtained by crosslinking the above-mentioned anionic polymer can also be used. Any known method can be used as a method of crosslinking the anionic polymer.
- the anionic polymer has a carboxyl group or a carboxylate group
- a method in which the carboxyl group or the carboxylate group of the anionic polymer is subjected to a condensation reaction with a diamine is preferable.
- anionic polymer acidic polysaccharides or derivatives thereof or salts thereof are suitable.
- alginic acid or a derivative thereof specifically, propylene glycol alginate, etc.
- a salt thereof for example, sodium salt, etc.
- Alkali metal salts are preferred.
- the molecular weight of the anionic polymer is not particularly limited. However, as the viscosity average molecular weight increases, the viscosity of the solution tends to increase during the production of the thin film with a base material, and casting tends to be difficult. In view of the tendency to decrease, the viscosity average molecular weight of the anionic polymer is preferably in the range of 1,000 to 500,000, more preferably in the range of 10,000 to 400,000. More preferably, it is in the range of 2,000 to 200,000.
- a low molecular compound having two or more anionic groups in one molecule can be preferably used.
- the low molecular weight compound having two or more anionic groups in one molecule include compounds having two carboxyl groups or carboxylate groups in one molecule such as succinic acid and malonic acid.
- the combination of the cationic polymer and the anionic polymer may be any combination as long as it forms a polyion complex and gels when mixed in the presence of water.
- Bioabsorbable polymer means a polymer that can be biodegraded.
- Specific examples of the cationic polymer include chitosan, collagen, polylysine, polyarginine, polyhistidine, and ionene.
- Examples of the anionic polymer include alginic acid, hyaluronic acid, polyglutamic acid, chondroitin sulfate, and derivatives thereof. .
- the concentration of the polyanion in the solution containing the polyanion and having a pH of 1.6 to 5.4 is preferably 0.01 to 5.0% by mass, and 0.02 Is more preferably 2% by mass, and particularly preferably 0.05-1.0% by mass.
- the viscosity of the solution containing the polyanion is preferably in the range of 0.1 to 1000 mPa ⁇ s, more preferably in the range of 1 to 500 mPa ⁇ s, and in the range of 10 to 100 mPa ⁇ s. Is more preferable.
- the pH of the solution containing the polyanion is 1.6 to 5.4, but it is preferably in the range of 1.8 to 5.0, because the solubility of the polyanion is excellent, and 2.0 to 4. A range of 5 is more preferable, and a range of 2.5 to 4.0 is particularly preferable.
- the pH of the solution containing the polyanion can be adjusted by adding an acid component.
- the acid component include organic acids such as acetic acid, propionic acid, succinic acid, malonic acid, oxalic acid and malic acid, and inorganic acids such as hydrochloric acid, sulfuric acid and nitric acid.
- Two or more types of polyanions may be used in combination in the solution containing polyanions.
- any solvent can be used as long as it can dissolve the polyanion.
- water or an aqueous solution of inorganic salts is suitable. is there.
- the solution containing a polyanion is preferably a solution containing a polyanion and malic acid (also referred to as “solution C” in the present specification). Since malic acid has a less pungent odor, a solution having better handleability can be obtained. Moreover, since malic acid has lower volatility, the pH of the solution can be maintained more stably.
- the content of malic acid in the solution C can be appropriately adjusted depending on the type of polyanion. For example, it is preferably 0.5 to 100 parts by mass, more preferably 1 to 50 parts by mass with respect to 1 part by mass of the polyanion. 5 to 20 parts by mass is particularly preferable.
- an acid component other than malic acid may be added within a range not impairing the effects of the present invention.
- acid components other than malic acid include organic acids such as oxalic acid, citric acid, gluconic acid, succinic acid, tartaric acid, fumaric acid, malic acid, pyrophosphoric acid, lactic acid, benzoic acid, hydrogen fluoride, hydrogen peroxide , Carbonic acid, hydrochloric acid, perchloric acid, nitric acid, sulfuric acid, sulfurous acid, persulfuric acid, phosphoric acid, phosphorous acid, hypophosphorous acid and the like, and organic acids having these as functional groups.
- the amount of the acid component other than malic acid added to the solution C is preferably in the range of 0.01 to 10% by mass, and in the range of 0.05 to 8% by mass with respect to the total amount of the solution C. It is more preferable that the content be in the range of 0.1 to 6% by mass.
- a base material functions as a support substrate at the time of manufacturing a thin film with a base material.
- materials that can be used as the substrate include semiconductors such as resins and silicones, metals, ceramics, glass, paper, nonwoven fabrics, inorganic non-metals, wood, and powders.
- the shape of the substrate can be any shape such as a film, a sheet, a plate, or a shape having a curved surface. Among them, a resin film having flexibility is preferable in consideration of mass productivity.
- the thickness of the resin film when using a flexible resin film is not particularly limited, but is preferably 5 ⁇ m to 500 ⁇ m and more preferably 25 to 250 ⁇ m from a practical viewpoint.
- the resin of the resin film may be either a thermoplastic resin or a thermosetting resin, such as polyethylene (high density, medium density or low density), polypropylene (isotactic or syndiotactic type), polybutene, Polyolefin such as ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (EVA), ethylene-propylene-butene copolymer, cyclic polyolefin, modified polyolefin, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide, polyimide, Polyamideimide, polycarbonate, poly- (4-methylbenten-1), ionomer, acrylic resin, polymethyl methacrylate, polybutyl (meth) acrylate, methyl (meth) acrylate-butyl (meth) acrylate copolymer, methyl (Meth) acrylate-styrene copolymer, acrylic-styren
- PET polyethylene terephthalate
- the glass examples include silicate glass (quartz glass), alkali silicate glass, soda lime glass, potash lime glass, lead (alkali) glass, barium glass, and borosilicate glass.
- the metal examples include gold, chromium, silver, copper, iron, titanium, nickel, tungsten, tantalum, aluminum, and platinum.
- these alloys are stainless steel such as SUS316L, shape memory alloy such as Ti—Ni alloy or Cu—Al—Mn alloy, Cu—Zn alloy, Ni—Al alloy, titanium alloy, tantalum alloy, platinum alloy or An alloy such as a tungsten alloy can also be used.
- the ceramic examples include oxides (eg, aluminum oxide, zinc oxide, titanium oxide, silicon oxide, zirconia, barium titanate), nitrides (eg, silicon nitride, boron nitride), sulfides (eg, cadmium sulfide). , Carbides (for example, silicon carbide) and the like. A mixture of these can also be used.
- oxides eg, aluminum oxide, zinc oxide, titanium oxide, silicon oxide, zirconia, barium titanate
- nitrides eg, silicon nitride, boron nitride
- sulfides eg, cadmium sulfide
- Carbides for example, silicon carbide
- Examples of paper include thin paper, kraft paper, high-quality paper, linter paper, baryta paper, sulfuric acid paper, and Japanese paper.
- nonwoven fabric examples include nonwoven fabric made of fibers such as polyester resin, acrylic resin, nylon, vinylon, and glass.
- the paper or non-woven fabric may have a strengthened interlayer strength between the fibers or other layers.
- resin such as acrylic resin, styrene butadiene rubber, melamine resin, urethane resin (impregnated with resin after paper making or embedded during paper making) Good.
- inorganic nonmetals examples include papermaking cement, extruded cement, slag cement, ALC (lightweight cellular concrete), GRC (glass fiber reinforced concrete), pulp cement, wood chip cement, asbestos cement, calcium oxalate, gypsum, gypsum slag, etc.
- Non-ceramic ceramic materials, earthenware, ceramics, porcelain, setware, glass, and inorganic materials such as ceramics.
- wood examples include veneer, plywood, particle board, fiberboard, laminated timber made of cedar, firewood, firewood, lawan, teak and the like.
- the powder examples include iron oxide, zinc oxide, cerium oxide, magnesium oxide, zirconium oxide, plate-like aluminum oxide, barium sulfate, chromium oxide, ultramarine oxide, magnesium carbonate, calcium carbonate, mica, synthetic mica, sericite, and talc.
- Silica platy silica, kaolin, silimanite, chromium hydroxide, zinc white, carbon black, alumina, aluminum silicate, magnesium silicate, boron nitride, silica-alumina powder, bentonite, smectite, magnesium fluoride, hydroxyapatite, etc.
- Inorganic pigment nylon powder, polymethyl methacrylate, styrene-divinylbenzene copolymer, polyethylene powder, silicone resin, Teflon (registered trademark) powder, silicone gum, silk powder, carnauba wax, Organic pigments such as chair wax, starch and microcrystalline cellulose, organic pigments such as rhodamine B, organic colorants such as red 201, black 401, yellow 4 and blue 1 zirconium, barium or aluminum lake, Examples include composite powders such as titanium mica and iron oxide-coated mica, and powders that have been surface-treated.
- the shape may be any shape or particle size that is usually used for cosmetics, such as a spherical shape, a plate shape, a needle shape, or a fiber shape.
- a preferred powder is an inorganic pigment.
- the surface of the substrate may be subjected to corona discharge treatment, glow discharge treatment, plasma treatment, ultraviolet irradiation treatment, ozone treatment, chemical etching treatment with alkali or acid, or the like.
- the base material may be a resin film, an inorganic film, or a film (organic-inorganic film) containing an organic material and an inorganic material laminated on the base material.
- the laminated structure composed of the resin film layer, the inorganic film layer, or the organic-inorganic film layer may cover a part of the substrate surface.
- membrane which is not located in an outermost surface layer in a laminated structure does not need to have a polar group.
- the thin film of this embodiment includes an A layer formed using a solution containing a polycation, and a B layer formed using a solution containing a polyanion and having a pH of 1.6 to 5.4. Have. Moreover, it is preferable that the thin film of this embodiment is an alternately laminated thin film in which A layers and B layers are alternately laminated.
- the number of lamination is not particularly limited, but the A layer and the B layer tend to ensure the transparency of the thin film.
- Each of these preferably has 1 to 300 layers.
- each of the A layer and the B layer is preferably 10 to 100 layers, more preferably 20 to 80 layers. Particularly preferred.
- the laminated structure of the A layer and the B layer in the thin film of this embodiment can be confirmed, for example, by observing the thin film with IR, NMR, TOF-SIMS or the like.
- the thickness of the thin film of the present embodiment is not particularly limited, but it is in the range of 1 nm to 300 nm because the properties such as self-adhesion, water absorption, and flexibility in the dry state become more excellent. Preferably, it is in the range of 10 nm to 250 nm, more preferably in the range of 20 nm to 200 nm.
- the thin film of this embodiment can also be used as a drug carrier (for example, a functional carrier or a platelet substitute in a drug delivery system).
- a drug carrier for example, a functional carrier or a platelet substitute in a drug delivery system.
- a drug carrier for example, a functional carrier or a platelet substitute in a drug delivery system.
- a drug carrier for example, a functional carrier or a platelet substitute in a drug delivery system.
- a drug carrier for example, a functional carrier or a platelet substitute in a drug delivery system.
- a drug carrier for example, a drug, a substance containing a site that specifically recognizes a target tissue / cell (specific recognition substance), or (c) for stabilizing the structure in the body It may be modified with a functional substance such as a substance (stabilizing substance).
- Specific examples of these functional substances include the following.
- Examples of the method of modifying the thin film with a functional substance include a method of forming a chemical bond between the functional group of the functional substance and the functional group of the thin film.
- the functional substance has a hydroxyl group or an amino group and the thin film has an isocyanate group
- a method for forming a urethane bond or a urea bond between these functional groups the functional substance has a carboxyl group.
- the thin film has an amino group
- the carboxyl group is activated to form an amide bond with the amino group.
- a Schiff base with glutaraldehyde is used between the amino groups.
- the functional substance has a carboxyl group and the thin film film has an amino group or a hydroxyl group
- a method in which an amide bond or an ester bond is formed between the carboxyl group and the amino group or the hydroxyl group If the functional substance is a polysaccharide and the thin film has an amino group, the functionality After forming an imido carbonate with cyanogen bromide on the quality hydroxyl group, cross-linking with amino group, when the functional material and the thin film have both mercapto groups, disulfide bonds are formed between activated mercapto groups.
- the method of forming etc. can be mentioned.
- alkyldiimidates acyldiazides, diisocyanates, bismaleimides, triazinyls, diazo compounds, glutaraldehyde, N-succinimidyl-3- (2-pyridyldithio) alkionate, bromocyan, etc. are used as crosslinking agents.
- the functional material and the corresponding functional group in the thin film may be crosslinked.
- the functional substance when the functional substance is hydrophobic, it is bonded to the hydrophobic region of the thin film by hydrophobic interaction, and when the functional substance is hydrogen-bonded, it is bonded to the hydrogen-bonded region of the thin film by hydrogen bonding.
- the functional substance has a charge
- a method of binding to an oppositely charged region of the thin film by electrostatic interaction may be used.
- the thin film of this embodiment has bioadhesiveness and is particularly suitably used as a sheet-like adhesive.
- a sheet-like adhesive For example, cells, tissues, organs, blood vessel walls, mucous membranes, corneas, skin, hair, nails, or skin adhesion, adhesion of incisions in parenchymal organs such as liver and spleen, anastomosis such as intestinal tract and fallopian tube, dura mater, Adhesion of membranes such as pleura, fascia, peritoneum, etc., hemostatic adhesive that stops bleeding from parenchymal organs, suture auxiliary material that stops bleeding from suture holes during suturing, and prevention of air leakage from lungs Used as an adhesive material.
- the thin film with a substrate of this embodiment includes, for example, a substrate, a solution containing a polycation (hereinafter also referred to as “solution A”), a polyanion, and a pH of 1.6 to 5.4. (Hereinafter also referred to as “Solution B”), Langmuir, Vol. 13, pp. 6195-6203, (1997).
- solution A a solution containing a polycation
- Solution B Langmuir, Vol. 13, pp. 6195-6203, (1997).
- the substrate is brought into contact with the solution A or the solution B to form a layer derived from a polycation or a polyanion on the surface of the substrate.
- Process (I) contacting the solution B with the polycation-derived layer to form a polyanion-derived layer on the polycation-derived layer; (Ii) a step of bringing the layer derived from the polyanion into contact with the solution A to form a layer derived from the polycation on the layer derived from the polyanion, and a lamination step.
- the polycation and the polyanion are alternately formed by contacting the layer derived from the polycation formed on the substrate (or the layer derived from the polyanion) and the solution B (or solution A).
- a laminated film is formed by adsorption. Further, when the adsorption of polycation or polyanion proceeds by the above contact and the surface charge is reversed, further electrostatic adsorption does not occur, so the thickness of the layer formed by contact with solution A or solution B should be controlled. Can do.
- the substrate is brought into contact with the solution A to form a layer derived from a polycation on the surface of the substrate, or the substrate is brought into contact with the solution B and derived from a polyanion on the surface of the substrate.
- a layer to be formed is formed.
- the former is preferably performed when the surface of the substrate is negatively charged, and the latter is performed when the surface of the substrate is positively charged. Further, at least a part of the surface of the substrate may be brought into contact with the solution A or the solution B. The contact with the solution A or the solution B may be performed in two or more times.
- the surface charge may be reversed in step (i) or step (ii).
- count of contact is not specifically limited.
- the contact with the solution B may be performed twice or more
- the contact with the solution A may be performed twice or more.
- the layer derived from polycation and the layer derived from polyanion tend to ensure the transparency of the thin film. It is preferable to repeat all of these until there are 1 to 300 layers.
- the thin film tends to have a film thickness that has a self-adhesive property, it is more preferable to repeat until both the layer derived from the polycation and the layer derived from the polyanion become 10 to 100 layers. It is particularly preferable to repeat until there are 20 to 80 layers.
- the film thickness of a thin film can be controlled by controlling the repetition frequency in a lamination process.
- the lamination process ends at step (ii) rather than ends at step (i).
- the characteristic of the substance used as a polycation becomes easy to express.
- the antibacterial property that is the characteristic of chitosan is easily developed.
- rinsing liquid used for rinsing water, an organic solvent, or a mixed solvent of water and a water-soluble organic solvent is preferable.
- water-soluble organic solvent include methanol, ethanol, propanol, acetone, dimethylformamide, acetonitrile and the like.
- the substrate it is preferable to contact the substrate, the layer derived from polycation or the layer derived from polyanion by immersing them in solution A or solution B.
- the layer formation step it is preferable to contact the substrate by immersing it in solution A or solution B.
- a layer derived from a polycation or a layer derived from a polyanion
- J. Appl. Phys. , Vol. 79, pp. A device called a dipper described in 7501-7509, (1996) and Japanese Patent Application No. 2000-568599 may be used.
- the arm to which the substrate is fixed automatically moves, and the substrate can be sequentially immersed in the solution A, the solution B, or the rinse solution according to the program.
- alternately dipping (hereinafter also referred to as “alternative dipping method”)
- the film formation can be continued as long as the surface charge is reversed. Therefore, the film thickness uniformity of the thin film formed by the alternate dipping method is higher and the film thickness controllability is higher than the normal dip coating method.
- the solution can enter by dipping. Since the laminated film is formed on the surface, it can be used. Moreover, even if the surface of the substrate has an uneven shape, a laminated film can be formed following the surface structure. Furthermore, even if the substrate surface has a nanometer-scale or submicron-scale structure, a laminated film can be formed following the structure.
- the thin film with a substrate of the present embodiment may be produced by forming a laminated film by a spin coating method in which the solution A or the solution B is dropped or sprayed on the substrate. At that time, the rinsing liquid may be supplied by dripping, spraying or showering, or a combination thereof.
- the base material may perform movements such as conveyance and rotation.
- the spin coating method has a demerit that the amount of the solution A, the solution B, etc. used is large and the film is formed one by one, so that the mass productivity is not excellent.
- any solvent can be used as the solvent for the solution A or the solution B as long as it can dissolve the polycation or the polyanion.
- the charge amount of the polycation or the polyanion can be used. Therefore, water or an aqueous solution of an inorganic salt is suitable.
- the concentration of the polycation or polyanion in the solution is not particularly limited, and may be appropriately set according to each production method.
- the polycation and the polyanion is a salt and the solubility of the polycation or the polyanion in water is reduced by removing the cation group or the counter anion of the anion group, a thin film with a substrate By removing counter ions contained in the thin film after forming the film, the mechanical strength of the thin film can be improved.
- the removal of the counter ions can be performed by, for example, a method of increasing the number of washing steps or immersing in a pH adjusting solution.
- solution B containing a polyanion and malic acid
- solution B containing a polyanion and malic acid
- Chitosan aqueous solution (made by Kimika: viscosity average molecular weight 90,000, viscosity 12.5 mPa ⁇ s, concentration: 0.1% by mass) as the cationic polymer, sodium alginate aqueous solution (made by Kimika: viscosity average molecular weight 100) as the anionic polymer. 1,000, viscosity 6.7 mPa ⁇ s, concentration: 0.1% by mass).
- Examples 1 to 5 and Comparative Examples 1 to 3 acetic acid (manufactured by Wako Pure Chemical Industries, Ltd.), hydrochloric acid (manufactured by Wako Pure Chemical Industries, Ltd.) or sodium bicarbonate (manufactured by Wako Pure Chemical Industries, Ltd.) and sodium carbonate (A mixed basic buffer solution (manufactured by Wako Pure Chemical Industries, Ltd.) was used.
- Example 1 The 0.1% by mass chitosan aqueous solution was used as it was as the chitosan aqueous solution.
- As the sodium alginate aqueous solution acetic acid was added dropwise to a 0.1% by mass sodium alginate aqueous solution to adjust the pH to 3.0.
- An SiO 2 substrate manufactured by Asahi Sangyo Co., Ltd., 5 inch silicon wafer: 30 mm ⁇ 70 mm ⁇ 1.0 mm thickness
- Example 2 The same operation as in Example 1 was performed except that as the aqueous sodium alginate solution, acetic acid was added dropwise to a 0.1% by mass aqueous sodium alginate solution and the pH was adjusted to 3.5. The film thickness of the obtained laminated film was 60 nm.
- Example 3 The same operation as in Example 1 was performed except that as the aqueous sodium alginate solution, acetic acid was added dropwise to a 0.1% by mass aqueous sodium alginate solution and the pH was adjusted to 4.0. The film thickness of the obtained laminated film was 40 nm.
- Example 4 The same operation as in Example 1 was performed except that as the aqueous sodium alginate solution, acetic acid was added dropwise to a 0.1% by mass aqueous sodium alginate solution and the pH was adjusted to 5.0. The film thickness of the obtained laminated film was 10 nm.
- Example 5 The same operation as in Example 1 was performed except that PET (Toyobo Co., Ltd., A4100, film thickness: 125 ⁇ m) was used as the base material instead of the SiO 2 substrate.
- the film thickness of the obtained laminated film was 85 nm.
- PET Toyobo Co., Ltd., A4100, film thickness: 125 ⁇ m
- Example 1 The same operation as in Example 1 was performed except that a 0.1% by mass sodium alginate aqueous solution (pH 5.5) was used as it was without adding a pH adjuster. As a result, film formation was not achieved.
- Example 2 The same as Example 1 except that a mixed basic buffer solution of sodium bicarbonate and sodium carbonate was added dropwise to a 0.1% by mass sodium alginate aqueous solution and the pH was adjusted to 10 as an aqueous sodium alginate solution. Was performed. As a result, film formation was not achieved.
- Example 3 The same operation as in Example 1 was performed, except that hydrochloric acid was added dropwise to a 0.1% by mass sodium alginate aqueous solution and the pH was adjusted to 1.5. As a result, sodium alginate was insolubilized and precipitated, and film formation was not achieved.
- Comparative Example 1 is a polyanion (anionic polymer) solution whose pH is not adjusted, and is used in a conventional spin coating method. As is apparent from the results of Comparative Example 1, the alternate immersion method using the polyanion solution was inferior in adsorption characteristics and did not lead to film formation. That is, a solution containing a polyanion and having a pH of 1.6 to 5.4 has excellent adsorption characteristics, and a thin film produced using this solution has characteristics different from those of a conventional thin film.
- Example 6 The 0.1% by mass chitosan aqueous solution was used as it was as the chitosan aqueous solution.
- the sodium alginate aqueous solution used what added 1 mass part of malic acid to the sodium alginate aqueous solution with respect to 100 mass parts of 0.1 mass% sodium alginate aqueous solution.
- the pH of the aqueous sodium alginate solution was 2.5.
- An SiO 2 substrate (manufactured by Asahi Sangyo Co., Ltd., 5 inch silicon wafer: 30 mm ⁇ 70 mm ⁇ 1.0 mm thickness) was immersed in (a) chitosan aqueous solution for 1 minute, and then rinsed with ultrapure water (specific resistance 18 M ⁇ ⁇ cm) for rinsing. After being immersed for 1 minute in (i) a sodium alginate aqueous solution for 1 minute, it was immersed for 1 minute in ultrapure water for rinsing. The procedure in which (a) and (b) are performed in this order is one cycle, and this cycle is repeated 30 times to obtain a laminated film of chitosan and sodium alginate on the SiO 2 substrate. The film thickness of the obtained laminated film was measured by film metrisk. As a result, the film thickness was 100 nm.
- Example 7 A laminated film was obtained in the same manner as in Example 6 except that the cycle was repeated 23 times.
- the film thickness of the obtained laminated film was 75 nm.
- Example 8 The same operation as in Example 6 was performed except that PET (Toyobo Co., Ltd., A4100, thickness: 125 ⁇ m) was used instead of the SiO 2 substrate.
- the film thickness of the obtained laminated film was 110 nm.
- PET Toyobo Co., Ltd., A4100, thickness: 125 ⁇ m
- Example 9 The same operation as in Example 6 was performed except that 1 part by mass of acetic acid was added dropwise to 100 parts by mass of a 0.1% by mass sodium alginate aqueous solution as the aqueous sodium alginate solution.
- the pH of the aqueous sodium alginate solution was 3.5.
- the film thickness of the obtained laminated film was 75 nm.
- Example 4 The same operation as in Example 6 was performed except that, as the aqueous sodium alginate solution, one in which 1 part by mass of hydrochloric acid was dropped with respect to 100 parts by mass of the 0.1% by mass aqueous sodium alginate solution was used. The pH of the aqueous sodium alginate solution was 1.4. As a result, sodium alginate was insolubilized and precipitated, and film formation was not achieved.
- Example 5 The same operation as in Example 6 was performed except that 1 part by mass of nitric acid was added dropwise to 100 parts by mass of a 0.1% by mass sodium alginate aqueous solution as the sodium alginate aqueous solution. The pH of the aqueous sodium alginate solution was 1.3. As a result, sodium alginate was insolubilized and precipitated, and film formation was not achieved.
Abstract
Description
(i)ポリカチオンに由来する層に、ポリアニオンを含み、pHが1.6~5.4である溶液を接触させて、上記ポリカチオンに由来する層上にポリアニオンに由来する層を形成するステップと、
(ii)ポリアニオンに由来する層に、ポリカチオンを含む溶液を接触させて、上記ポリアニオンに由来する層上にポリカチオンに由来する層を形成するステップと、
を繰り返す積層工程と、を備える、基材付き薄膜フィルムの製造方法を提供する。
本明細書において、ポリカチオンとは、1分子中に2個以上のカチオン性基を有する化合物をいい、カチオン性基とは、カチオン基又はカチオン基に誘導され得る基をいう。カチオン性基としては、例えば、アミノ基;メチルアミノ基、エチルアミノ基等のモノアルキルアミノ基;ジメチルアミノ基、ジエチルアミノ基等のジアルキルアミノ基;イミノ基;グアニジノ基等が挙げられる。なお、アミノ基はプロトンが配位結合した-NH3 +であってもよい。
ポリカチオンを含む溶液中のポリカチオンの濃度は、0.01~5.0質量%が好ましく、0.02~2.0質量%がより好ましく、0.05~1.0質量%が特に好ましい。
本明細書において、ポリアニオンとは、1分子中に2個以上のアニオン性基を有する化合物をいい、アニオン性基とは、アニオン基又はアニオン基に誘導され得る基をいう。アニオン性基としては、例えば、カルボキシル基、カルボキシレート基、硫酸基、スルホン酸基及びリン酸基等が挙げられる。
ポリアニオンを含み、pHが1.6~5.4である溶液(以下「ポリアニオンを含む溶液」ともいう。)中のポリアニオンの濃度は、0.01~5.0質量%が好ましく、0.02~2質量%がより好ましく、0.05~1.0質量%が特に好ましい。
基材は、基材付き薄膜フィルムを製造する際の支持基板として機能する。基材として使用可能な材料としては、例えば、樹脂、シリコーン等の半導体、金属、セラミックス、ガラス、紙、不織布、無機非金属、木質、粉体等が挙げられる。基材の形状はフィルム、シート、板、曲面を有する形状等任意の形状とすることができる。その中でも量産性を考慮するとフレキシブル性を有する樹脂フィルムが好ましい。
これらの樹脂フィルムの中でも特に、積層膜の接着性により優れることからポリエチレンテレフタレート(PET)フィルムがさらに好ましい。
本実施形態の薄膜フィルムは、ポリカチオンを含む溶液を用いて形成されるA層と、ポリアニオンを含み、pHが1.6~5.4である溶液を用いて形成されるB層と、を有する。また、本実施形態の薄膜フィルムは、A層とB層が交互に積層された交互積層薄膜であることが好ましい。
(a)薬物:抗炎症剤、止血剤、血管拡張薬、血栓溶解剤、抗動脈硬化剤等。
(b)特異的認識物質:コラーゲン、ラミニン、VCAM-1、セレクチン、フィブリン等。
(c)構造体を安定化させる物質:ポリエチレングリコール、ポリビニルピロリドン、ポリビニルアルコール、多糖類、ポリグルタミン酸等。
本実施形態の基材付き薄膜フィルムは、例えば、基材と、ポリカチオンを含む溶液(以下「溶液A」ともいう。)と、ポリアニオンを含み、pHが1.6~5.4である溶液(以下「溶液B」ともいう。)とから、Langmuir,Vol.13,pp.6195-6203,(1997年)に記載された交互積層法によって製造することができる。
(i)ポリカチオンに由来する層に、溶液Bを接触させて、ポリカチオンに由来する層上にポリアニオンに由来する層を形成するステップと、
(ii)ポリアニオンに由来する層に、溶液Aを接触させて、ポリアニオンに由来する層上にポリカチオンに由来する層を形成するステップと、を繰り返す積層工程と、を備える。
キトサン水溶液は、上記0.1質量%のキトサン水溶液をそのまま使用した。アルギン酸ナトリウム水溶液は、0.1質量%アルギン酸ナトリウム水溶液に酢酸を滴下して、pHを3.0に調整したものを使用した。
SiO2基板(旭日産業製、5インチシリコンウエハ:30mm×70mm×1.0mm厚)を、(ア)キトサン水溶液に1分間浸漬した後、リンス用の超純水(比抵抗18MΩ・cm)に1分間浸漬し、(イ)アルギン酸ナトリウム水溶液に1分間浸漬した後、リンス用の超純水に1分間浸漬した。
(ア)と(イ)を順番に行う手順を1サイクルとして、このサイクルを30回繰り返し、SiO2基板上にキトサンとアルギン酸ナトリウムの積層膜を得た。得られた積層膜の膜厚をエリプソメータ(溝尻光学社製、光源633nm)によって測定した。その結果、膜厚は80nmであった。
アルギン酸ナトリウム水溶液として、0.1質量%アルギン酸ナトリウム水溶液に酢酸を滴下して、pHを3.5に調整したものを使用したこと以外は実施例1と同様の操作を行った。得られた積層膜の膜厚は60nmであった。
アルギン酸ナトリウム水溶液として、0.1質量%アルギン酸ナトリウム水溶液に酢酸を滴下して、pHを4.0に調整したものを使用したこと以外は実施例1と同様の操作を行った。得られた積層膜の膜厚は40nmであった。
アルギン酸ナトリウム水溶液として、0.1質量%アルギン酸ナトリウム水溶液に酢酸を滴下して、pHを5.0に調整したものを使用したこと以外は実施例1と同様の操作を行った。得られた積層膜の膜厚は10nmであった。
SiO2基板に代えてPET(東洋紡社製,A4100,膜厚:125μm)を基材として使用したこと以外は実施例1と同様の操作を行った。得られた積層膜の膜厚は85nmであった。
基材としてPETを用いた場合、SiO2基板を用いた場合よりも膜厚を厚くすることが可能であった。
pH調整剤を添加せず、0.1質量%アルギン酸ナトリウム水溶液(pH5.5)をそのまま使用したこと以外は実施例1と同様の操作を行った。その結果、膜形成には至らなかった。
アルギン酸ナトリウム水溶液として、0.1質量%アルギン酸ナトリウム水溶液に、炭酸水素ナトリウムと炭酸ナトリウムの混合塩基性緩衝液を滴下して、pHを10に調整したものを使用したこと以外は実施例1と同様の操作を行った。その結果、膜形成には至らなかった。
アルギン酸ナトリウム水溶液として、0.1質量%アルギン酸ナトリウム水溶液に塩酸を滴下して、pHを1.5に調整したものを使用したこと以外は実施例1と同様の操作を行った。その結果、アルギン酸ナトリウムが不溶化して沈殿し、膜形成には至らなかった。
キトサン水溶液は、上記0.1質量%のキトサン水溶液をそのまま使用した。アルギン酸ナトリウム水溶液は、0.1質量%アルギン酸ナトリウム水溶液100質量部に対して、リンゴ酸1質量部をアルギン酸ナトリウム水溶液に添加したものを使用した。アルギン酸ナトリウム水溶液のpHは、2.5であった。
SiO2基板(旭日産業製、5インチシリコンウエハ:30mm×70mm×1.0mm厚)を(ア)キトサン水溶液に1分間浸漬した後、リンス用の超純水(比抵抗18MΩ・cm)に1分間浸漬し、(イ)アルギン酸ナトリウム水溶液に1分間浸漬した後、リンス用の超純水に1分間浸漬した。
(ア)と(イ)を順番に行う手順を1サイクルとして、このサイクルを30回繰り返し、SiO2基板上にキトサンとアルギン酸ナトリウムの積層膜を得た。得られた積層膜の膜厚をフィルメトリスクによって測定した。その結果、膜厚は100nmであった。
サイクルの繰り返し回数を23回にしたこと以外は、実施例6と同様の操作により、積層膜を得た。得られた積層膜の膜厚は75nmであった。
SiO2基板に代えてPET(東洋紡社製,A4100,厚み:125μm)を基材として使用したこと以外は実施例6と同様の操作を行った。得られた積層膜の膜厚は110nmであった。
基材としてPETを用いた場合、SiO2基板を用いた場合よりも膜厚を厚くすることが可能であった。
アルギン酸ナトリウム水溶液として、0.1質量%アルギン酸ナトリウム水溶液100質量部に対して、酢酸1質量部を滴下したものを使用したこと以外は実施例6と同様の操作を行った。アルギン酸ナトリウム水溶液のpHは、3.5であった。また、得られた積層膜の膜厚は75nmであった。
アルギン酸ナトリウム水溶液として、0.1質量%アルギン酸ナトリウム水溶液100質量部に対して、塩酸1質量部を滴下したものを使用したこと以外は実施例6と同様の操作を行った。アルギン酸ナトリウム水溶液のpHは、1.4であった。その結果、アルギン酸ナトリウムが不溶化して沈殿し、膜形成には至らなかった。
アルギン酸ナトリウム水溶液として、0.1質量%アルギン酸ナトリウム水溶液100質量部に対して、硝酸1質量部を滴下したものを使用したこと以外は実施例6と同様の操作を行った。アルギン酸ナトリウム水溶液のpHは1.3であった。その結果、アルギン酸ナトリウムが不溶化して沈殿し、膜形成には至らなかった。
Claims (12)
- 基材と、該基材上に形成された薄膜フィルムとを備え、
前記薄膜フィルムが、ポリカチオンを含む溶液を用いて形成されるA層と、ポリアニオンを含み、pHが1.6~5.4である溶液を用いて形成されるB層と、を有する、
基材付き薄膜フィルム。 - ポリアニオンを含み、pHが1.6~5.4である溶液が、ポリアニオン及びリンゴ酸を含む溶液である、請求項1に記載の基材付き薄膜フィルム。
- 前記薄膜フィルムは、前記A層と前記B層とが交互に積層されたものである、請求項1又は2に記載の基材付き薄膜フィルム。
- 前記ポリカチオンが、1分子中に2個以上のアミノ基を有するカチオン性ポリマーである、請求項1~3のいずれか一項に記載の基材付き薄膜フィルム。
- 前記カチオン性ポリマーが、塩基性多糖類若しくはその誘導体又はそれらの塩である、請求項4に記載の基材付き薄膜フィルム。
- 前記塩基性多糖類が、キトサンである、請求項5に記載の基材付き薄膜フィルム。
- 前記ポリアニオンが、1分子中に2個以上のカルボキシル基又はカルボキシレート基を有するアニオン性ポリマーである、請求項1~6のいずれか一項に記載の基材付き薄膜フィルム。
- 前記アニオン性ポリマーが、酸性多糖類若しくはその誘導体又はそれらの塩である、請求項7に記載の基材付き薄膜フィルム。
- 前記酸性多糖類が、アルギン酸である、請求項8に記載の基材付き薄膜フィルム。
- ポリカチオンを含む溶液、又はポリアニオンを含み、pHが1.6~5.4である溶液に基材を接触させて、該基材の表面にポリカチオン又はポリアニオンに由来する層を形成する層形成工程と、
(i)ポリカチオンに由来する層に、ポリアニオンを含み、pHが1.6~5.4である溶液を接触させて、前記ポリカチオンに由来する層上にポリアニオンに由来する層を形成するステップと、
(ii)ポリアニオンに由来する層に、ポリカチオンを含む溶液を接触させて、前記ポリアニオンに由来する層上にポリカチオンに由来する層を形成するステップと、
を繰り返す積層工程と、
を備える、基材付き薄膜フィルムの製造方法。 - ポリアニオンを含み、pHが1.6~5.4である溶液が、ポリアニオン及びリンゴ酸を含む溶液である、請求項10に記載の製造方法。
- 前記積層工程を、ポリカチオンに由来する層及びポリアニオンに由来する層がいずれも1~300層となるまで繰り返す、請求項10又は11に記載の製造方法。
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JP5572263B2 (ja) * | 2011-06-14 | 2014-08-13 | 株式会社 資生堂 | ヒアルロン酸またはその誘導体の担持薄膜および薄膜化粧料 |
JP2014153996A (ja) * | 2013-02-12 | 2014-08-25 | Hitachi Chemical Co Ltd | シート、シートの製造方法、並びに接触緩和シート、rfidのインレイ及び薄膜層の被着体への転写方法。 |
JP2014233956A (ja) * | 2013-06-05 | 2014-12-15 | 日立化成株式会社 | ナノ薄膜転写シート |
JP2015016614A (ja) * | 2013-07-10 | 2015-01-29 | 日立化成株式会社 | ナノ薄膜転写シート、ナノ薄膜転写シートの製造方法、及びナノ薄膜層の被着体への転写方法 |
JP2015016612A (ja) * | 2013-07-10 | 2015-01-29 | 日立化成株式会社 | ナノ薄膜転写シート及びナノ薄膜転写シートの製造方法 |
JP2015016613A (ja) * | 2013-07-10 | 2015-01-29 | 日立化成株式会社 | ナノ薄膜転写シート及びナノ薄膜転写シートの製造方法 |
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TW201302249A (zh) | 2013-01-16 |
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