220 results about "Nanocapsules" patented technology

The invention discloses a method for restoring soil heavy metal pollution by coupling soybean urease with a charcoal cementing agent, and relates to the technical field of soil heavy metal pollution restoration, and the method comprises the following steps: dynamic microbiome regulation and control: introducing photosensitive protein into soil functional bacteria; the acyl homoserine lactone analogue is synthesized and applied to soil, and is competitively combined with a microbial quorum sensing receptor to block an inhibitor to secrete a signal channel; according to the method, microbial urease secretion is regulated and controlled through optogenetics, an inhibitor signal is blocked through quorum sensing interference, and a microbiome is precisely regulated and controlled; the pH-responsive nanocapsule releases an inhibitor in a targeted manner, and the magnetic-responsive nanochain dynamically captures interfering bacteria, so that the limitation of passive adsorption is broken through; the gene editing plant releases coumarin to inhibit fungal metabolism, and the engineering mycorrhizal fungi physically shields an inhibitor to construct cross-biosphere cooperative defense; the urease activity and the heavy metal removal rate are remarkably improved, meanwhile, the soil microbial diversity is maintained, and the soil specificity interference problem is solved.

The invention relates to a pH-responsive aromatic nanocapsule as well as a preparation method and application thereof, and the pH-responsive aromatic nanocapsule comprises the following components in percentage by mass: 0.4-10% of modified SiO2, 0.2-30% of a core material, 10.2-16% of a quaternized chitosan / polydopamine wall material and the balance of water. The preparation method comprises the following specific preparation steps: preparing a modified SiO2 suspension, adding a core material, and carrying out homogeneous emulsification under a high-speed shearing machine to prepare a Pickering emulsion; preparing a quaternized chitosan / polydopamine wall material solution; and finally, carrying out isovolumetric blending on the Pickering emulsion and the quaternized chitosan / polydopamine wall material solution (grafting the quaternized chitosan / polydopamine wall material through the modified SiO2), and stirring to obtain the aromatic nanocapsule. Compared with the prior art, the preparation method has the advantages that the lavender essential oil is taken as a core material, the quaternized chitosan / polydopamine is taken as a wall material, and the modified SiO2 stable Pickering emulsion is taken as a template, so that the catechol-based self-adhesive nanocapsule with pH responsiveness is prepared. The nanocapsule is prepared by an emulsion template method, the preparation method is mild in condition, and the prepared nanocapsule is green and safe and has excellent adhesion and antibacterial properties.

The invention discloses a preparation method and application of a ceramic glaze layer protecting and repairing material, and belongs to the technical field of cultural relic protection. The preparation method comprises preparation of a core-shell self-repairing nanocapsule, and the preparation of the core-shell self-repairing nanocapsule comprises the following steps: reacting a calcium chloride solution with a sodium hydroxide solution, then adding sodium polyacrylate and nano ZnO, and carrying out dispersion, centrifugation, washing and other operations to prepare the nano Ca (OH) 2-ZnO composite material. The nano Ca (OH) 2-ZnO composite material of the core-shell self-repairing nanocapsule can be rapidly released through the 3.5 nm aperture of the mesoporous SiO2 shell, glaze layer cracks are physically filled and react with CO2 in air to generate CaCO3 crystals, crack plugging is achieved, meanwhile, dynamic disulfide bonds of a PU layer are broken and recombined under stress stimulation, a crack interface is repaired through chemical bonding, and the performance of the core-shell self-repairing nanocapsule is improved. The 24-hour crack repair rate is greater than or equal to 96%, and the limitation of'one-time repair 'of a traditional material is solved.

The invention relates to the technical field of functional materials, in particular to a chitosan nanocapsule as well as a preparation method and application thereof. The preparation method of the chitosan nanocapsule comprises the following steps: (a) mixing and emulsifying a chitosan solution, an oil-in-water emulsifier and essential oil to form an oil-in-water emulsion, adding an aqueous solution of sodium tripolyphosphate into the oil-in-water emulsion, and stirring to obtain a first mixture; (b) adding the first mixture into an oil phase solvent containing a water-in-oil emulsifier, and stirring to obtain a multiple emulsion; and (c) adding an aqueous solution of a dialdehyde cross-linking agent into the multiple emulsion, carrying out a cross-linking reaction, collecting a solid-phase substance, and drying. The physical / chemical double-crosslinking chitosan nanocapsule is obtained by utilizing physical crosslinking between the chitosan and the sodium tripolyphosphate and chemical crosslinking between the chitosan and the binary aldehyde crosslinking agent, so that the encapsulation efficiency and the encapsulation efficiency of the nanocapsule are remarkably improved; meanwhile, the nanocapsule also has pH responsiveness and has a slow release effect after pH response.

The invention discloses a preparation method of a passivator for a high-rust-prevention aluminum alloy, and belongs to the technical field of rust-prevention materials.The passivator comprises a self-repairing nanocapsule, an environment-friendly corrosion inhibitor, a functional silane coupling agent, inorganic anti-corrosion pigment and an assistant.The self-repairing nanocapsule can form a passivation film with a self-repairing function on the surface of the aluminum alloy, and the passivation film can be applied to the surface of the aluminum alloy; the environment-friendly corrosion inhibitor provides anti-rust performance and biocompatibility, the functional silane coupling agent enhances the adhesive force and weather resistance of a passivation film, the inorganic anti-corrosion pigment serves as a main component of the passivation film to provide excellent anti-corrosion performance, and the passivation agent is applied to the surface of an aluminum alloy in a dipping, spraying, brushing or electrochemical deposition mode. According to the passivating agent, the self-repairing nanocapsule is added to form a layer of passivating film with a self-repairing function and excellent anti-rust performance, the anti-rust performance and durability of the aluminum alloy are remarkably improved through the passivating agent, and the performance is gradually enhanced along with increase of the content of the self-repairing nanocapsule.

A multipurpose high-performance detergency composition, comprising a nanoemulsion composed of a) fast-acting nanocapsules and b) empty nanomicelles and c) cleaning formulation cofactors, where the fast-acting nanocapsules are made up of citrus terpenes, water, and a nonionic surfactant, while the empty nanomicelles are made up of at least 2 nonionic surfactants and water, where in the final composition citrus terpenes are in a concentration of between 25 and 45%, water between 3 and 5%, stabilizing surfactants and adjuvants or cleaning formulation cofactors between 45 and 55%. A method for the development of a multipurpose high-performance detergency composition is also claimed. The objective of the application under study is to provide a high-performance nanotechnological surfactant composition for incorporation into formulations of cleaning products such as: multipurpose disinfectant cleaner, floor cleaner, degreasers, textile detergents, among other homecare applications.

The invention discloses a fibroin / zein-based dual-protein nanocapsule and a preparation method and application thereof.The dual-protein nanocapsule is prepared through a microfluidic-assisted nano-coprecipitation technology and comprises the following steps that silk fibroin is dissolved in a citric acid aqueous solution, and a mixed solution is obtained; the preparation method comprises the following steps: dissolving zein, curcumin and linseed oil in ethanol, rapidly mixing through a microchannel, and carrying out nano coprecipitation to obtain the dual protein nanocapsule. Through electrostatic interaction and amphiphilic regulation, a stable double protein shell structure is formed, curcumin is effectively protected from being damaged by gastric acid and digestive juice, targeted release of intestinal tracts is achieved, and the bioavailability of curcumin is remarkably improved. The obtained nanocapsule is uniform in particle size and good in dispersity, is suitable for a functional beverage system, and has a wide application prospect.

The invention relates to the technical field of water-soluble fertilizers, in particular to an amino-alginic acid organic water-soluble fertilizer and a preparation method thereof.The preparation method comprises the following steps that S1, one or more of macroelements, medium elements, microelements, amino acid and humic acid are dissolved to obtain a solution A; s2, adding nano silicon dioxide into the solution A, and uniformly dispersing to obtain a solution B; s3, adding sodium alginate into the solution B to obtain a colloidal solution C; s4, adding a stabilizer and a synergist into the colloidal solution C to obtain a colloidal solution D; s5, performing spray drying on the colloidal solution D to obtain solid powder E; s6, dissolving the degradable polymer, and adding a cross-linking agent to obtain a solution F; and S7, uniformly spraying the solution F onto the solid powder E, and performing spray drying to obtain the water-soluble fertilizer. According to the water-soluble fertilizer disclosed by the invention, the manner of coating the nanoparticles with the nanocapsules is adopted, so that the water-soluble fertilizer is efficiently utilized, and the yield and the quality of crops are improved.

The invention discloses a fragrance-emitting artificial flower and a preparation method thereof. Petals of the fragrance-emitting artificial flower are prepared from hydroxymethyl-terminated polydimethylsiloxane, hydrogen-containing silicone oil, hydroxyl silicone oil, a platinum catalyst and the like. According to the invention, hydroxymethyl-terminated polydimethylsiloxane is used as a base adhesive, hydrogen-containing silicone oil is used as a foaming agent to prepare the foaming material with silica gel petals as an open pore structure, and the pores can provide channels for emission of aromatic molecules; the silane coupling agent is used for modifying the montmorillonite, so that the dispersity and compatibility of the montmorillonite in the base rubber can be improved, the montmorillonite can be uniformly dispersed, and the mechanical properties such as strength and tensile strength can be better enhanced; the montmorillonite with the porous structure can be used for highly loading the nanocapsule coated with the spice and can play a role in protecting and slowly releasing the spice, so that the volatilization of aroma molecules in the spice is slowed down or controlled, the emission and retention time of aroma of the spice is prolonged, and experiments prove that the aroma emission time of the petal prepared by the preparation method disclosed by the invention can be more than 4 months.

The present invention relates to a drug carrier system in the form of nanocapsules and nanospheres loaded with luteolin and oleuropein, which have a counteracting effect on tumour cell growth, invasion and angiogenesis, and to a production method (100) of this drug carrier system.

The invention discloses a preparation method of a metal ruthenium hydrogel drug delivery system, which comprises the following steps: mixing a PDA-IR780 nanocapsule with a metal ruthenium hydrogel solution, quickly stirring, washing with distilled water, and freeze-drying to obtain the metal ruthenium hydrogel drug delivery system Ru (fmb) 3-HAADH (at) PDA-IR780. According to the invention, the drug targeting is improved, the pharmacokinetics of active ingredients is enhanced, a plurality of treatment modes are integrated, a photoresponse type metal ruthenium hydrogel drug loading system is constructed, and the killing effect on tumors is improved through photothermal and photodynamic combined treatment.

The invention relates to a buffer solution supporting multiple fluorescent quantitative PCR and a preparation method thereof, and relates to the technical field of biochemical reagents, the buffer solution comprises Tris-HCl, (NH4) 2SO4, KCl, a temperature control type magnesium ion nanocapsule and an additive; the additive is prepared from polyethylene glycol, betaine, trehalose, tetramethylammonium chloride and acetylated BSA (Bovine Serum Albumin); the temperature control type magnesium ion nanocapsule is of a core-shell structure, the core comprises MgCl2 accounting for 1-5 mM of the concentration of the buffer solution, pyrophosphatase accounting for 0.1-0.5 U / mu L, phospholipid accounting for 10-30 mg / mL, cholesterol accounting for 5-15 mg / mL and an inorganic solution, and the shell comprises a temperature-sensitive polymer accounting for 20-45 wt% of the concentration of the buffer solution. The buffer solution can dynamically adjust the concentration of Mg < 2 + >, and the situation that the amplification efficiency is affected due to the fact that the concentration of Mg < 2 + > is difficult to adjust is avoided.

The invention provides a magnesium oxide board capable of releasing negative oxygen ions for a long time and a preparation method of the magnesium oxide board, and relates to the technical field of building materials, the magnesium oxide board comprises a magnesium oxide board base material and nano microcapsules uniformly dispersed in the magnesium oxide board base material, the core of each nano microcapsule is high-activity negative ion powder, the high-activity negative ion powder is coated with SiO2, and the core of each nano microcapsule is coated with SiO2. A shell of the nano microcapsule is made of a humidity response material containing a photocatalytic material. According to the negative oxygen ion long-acting release technology based on combination of light-humidity double-response collaborative triggering and the nano microcapsules, the technical problems that traditional negative oxygen ion material release depends on a single environment condition, and release is uncontrollable due to direct exposure of the negative oxygen ion material are solved, intelligent on-demand release of negative oxygen ions is achieved, and the service life is remarkably prolonged.

The invention discloses a coal mine tunnel roof displacement monitoring device, and belongs to the technical field of tunnel roof displacement monitoring, grooves are etched in the outer surface of an anchor rod body through an ultrafast laser micro-nano machining technology, the grooves are spirally distributed, graphene sensing fibers and flexible optical fiber spiral layers are embedded in the grooves, and the graphene sensing fibers and the flexible optical fiber spiral layers are arranged on the outer surface of the anchor rod body. The graphene sensing fiber and the flexible optical fiber spiral layer are used for monitoring the wide area of stress distribution on the surface of the anchor rod body, and the outer surface of the anchor rod body is coated with a nanocapsule filling type self-repairing coating. And the nanocapsule in the nanocapsule filling type self-repairing coating is broken to release the silane repairing agent to repair the crack surface. The spiral groove is etched in the anchor rod body, and the graphene sensing fiber and the flexible optical fiber spiral layer are embedded, so that the stress distribution and stress change of the surface of the anchor rod body can be monitored in a wide area, accurate data are provided for top plate displacement monitoring, and the monitoring accuracy and continuity are improved.

A multicomponent nanocapsule composition comprising a core particle, an oil phase encapsulating the core particle, and an aqueous phase in which the encapsulated core particle is suspended is provided. The porous particle includes a cationic surfactant encapsulated in a porous particle. The oil phase includes an anionic surfactant and a zwitterionic surfactant. A method of making a multicomponent nanocapsule composition is also provided. A method of treating a hydrocarbon-bearing formation with the multicomponent nanocapsule composition is provided. The method may include providing a multicomponent nanocapsule composition, introducing the multicomponent nanocapsule composition into the hydrocarbon-bearing formation, displacing hydrocarbons from the hydrocarbon-bearing formation by contacting the multicomponent nanocapsule composition with the hydrocarbons, and recovering the hydrocarbons.

It is an object of the present invention to provide transport microcapsules that are ingested by a target cell type and permanently or temporarily alter the target cell without thereby causing a toxic effect on the cell. The solution according to the invention consists in the use of a monodisperse core to thereby produce polyelectrolyte nanocapsules having cell-specific dimensions, in which the dimensions for hematopoietic cells range from 20 to 80 nm, preferably from 40 to 60 nm. The size of the particles must be in a very narrow range to prevent the occurrence of toxic effects. In order to maintain the low toxicity of nanomicrocapsules, it is also important to remove nanoparticles (cores) surrounding which create microcapsules prior to use. The method for this purpose is known in the prior art (e.g., using EDTA removal). Another object of the invention is the stabilization of transport microcapsules. The solution according to the invention consists in modifying microcapsules, layers and / or carriers to be packaged by functional groups, allowing stabilization and thus long-term storage at room temperature. The third purpose of the invention is targeted introduction of transport microcapsules. The solution according to the invention is functionalization of the layer by chemical modification and / or supplementation of the layer with antibodies, proteins or peptides.

The invention relates to a biodegradable hydraulic oil composition and a preparation method of hydraulic oil, and relates to the technical field of hydraulic oil compositions.The hydraulic oil composition comprises, by weight, 20-37% of ester oil, 5-10% of refined vegetable oil and 5-10% of a demulsifier, and the total weight of the ester oil, the refined vegetable oil and the demulsifier is 100%. The content of the refined vegetable oil is 62-79.9 wt%, the content of the demulsifier is 0.1-1 wt%, and the preparation method of the refined vegetable oil comprises the following steps: pre-loading a nanocapsule with an antioxidant as an inner core in activated clay, loading the activated clay pre-loaded with the nanocapsule into deacidified oil, and filtering to obtain the refined vegetable oil. The hydraulic oil composition disclosed by the invention has excellent biodegradability and also has the technical effects of relatively good oxidation stability and viscosity-temperature property.

The invention relates to a mould-proof and mothproof polyurethane foaming adhesive manufacturing process which comprises the steps of prepolymer preparation, prepolymer mixture preparation, foaming agent mixture preparation, foaming forming, curing and finishing. According to the mould-proof and mothproof polyurethane foaming adhesive manufacturing process, a mould-proof agent is packaged in a silicon dioxide nanocapsule, so that the dispersity and the slow-release effect are improved; the pressure of the mixing head of the high-pressure foaming machine is increased to 20 MPa, the micron-sized dispersion effect is ensured, microwave radiation is adopted to replace a conventional curing mode, the working efficiency is improved, and the scientificity and practical value of the whole process are improved.

The invention discloses a plant cell extract-containing traditional Chinese medicine aromatic penetration enhancer and a preparation method thereof, and the penetration enhancer comprises the following components in parts by mass: 8-15 parts of storax nano-vesicles, 3-8 parts of agilawood nano-vesicles, 1-5 parts of refined turpentine, 0.5-3 parts of panax notoginseng saponins, 0.5-3 parts of rhododendron dauricum oil and 20-35 parts of grape seed oil, the storax nano-vesicles and the agilawood nano-vesicles are exosome-like nano-vesicles extracted from plant secretion, and the particle size of the vesicles is 50-200 nm. Skin interstices are opened, skin meridians and blood are dredged, and accordingly relieving, inflammation resisting, redness improving and skin barrier repairing are achieved.

The disclosed composition for fertilization and treating trees, shrubs and climbing plants with programmed release of the active substance is comprising the active substance stored in capsules made by nanoencapsulation or microencapsulation method and wherein based on capsule membrane the time of release of the active substance is adjusted. The active component stored in the nanocapsules or microcapsules can be such that it acidifies the surrounding soil in the range of pH 2.5 to pH 6.5. One example of such active component is the use of citric acid, which is completely ecological and does not create environmental pollution. Also, the active component in the nanocapsules can be such that it regulates the acidity of the soil in the range of pH 6.5 to pH 7.0. Furthermore, the active component in the special capsules can be an insecticide and / or in the special capsules fungicide, and / or in the special capsules acaricide and / or in the special capsules pheromone and / or in the special capsules repellent.

The present invention belongs to the field of pesticide formulations, and particularly relates to a preparation method and application of a pesticide nano-capsule controlled release agent, which comprises the following steps: adding a n-butanol solution containing a pesticide active ingredient into an aqueous solution containing a surfactant, stirring evenly to form an oil-in-water pesticide microemulsion; adding an aqueous tannic acid solution and an aqueous FeCl3 solution into the obtained product, so that Fe 3+ and the coordination polymer formed by the coordination of tannic acid are wrapped on the surface of the droplets of the oil-in-water pesticide microemulsion, and then through centrifugation, separation, washing and drying, the target product, the pesticide nano-capsule controlled release agent, is obtained. The present invention also discloses a method for controlling the release of pesticides in response to 8 stimuli, including acidity, alkalinity, glutathione, vitamin C, hydrogen peroxide, phosphate, phytic acid, sunlight (temperature). The present invention has the characteristics of simple preparation method, less use of raw materials, low cost, high pesticide loading rate, and easy degradation of nano-capsules.

The present invention discloses a pH-responsive Mat@CS-Pro nanocapsule antifouling agent, its preparation method, and application, belonging to the technical field of marine antibacterial antifouling and nanocomposite materials. The invention comprises the following steps: dissolving matrine in anhydrous ethanol containing lecithin to prepare an oil phase; dissolving chitosan in anhydrous acetic acid to prepare an aqueous phase; preparing Mat@CS oil / water microcapsules by a microemulsion method; and preparing an aqueous solution of the prepared Mat@CS oil / water microcapsules and D-Proline. The solution is stirred in an ice-water bath, filtered through a dialysis bag in a deionized water solution, and freeze-dried to obtain the pH-responsive Mat@CS-Pro nanocapsule antifouling agent. The material disclosed is environmentally friendly and has excellent antibacterial properties, providing insights into the exploration of intelligent pH-responsive antifouling agents in the marine field.

A biocidal composite wall or surface fabric installable within an aircraft cabin or other vehicle interior space includes a flexible woven layer. The woven layer is treated on its outer surface with a biocidal polymer coating. For example, the polymer coating may incorporate biocidal microcapsules or nanocapsules configured for controlled release of biocidal compounds in response to physical contact or other stimuli. The released biocidal compounds compromise or kill microbial compounds deposited on the outer surface, e.g., via physical contact by passengers or crewmembers. The woven layer includes additional biocidal molecules incorporated into its fibers and strands, the biocidal molecules capable of biocidal action in response to contact with the fabric.

The invention relates to a preparation method of peppermint essence, which solves the problems of quick volatilization and poor durability of the traditional peppermint essence by optimizing the combination of essence components and a slow-release carrier by adopting a multi-layer microcapsule slow-release technology and a nanocapsule technology. According to the method, essence components such as menthol, menthone and leaf isovalerate are mixed with at least two layers of microcapsules, the outer layer microcapsules slowly release fragrance, the inner layer microcapsules quickly release fragrance, and it is ensured that the fragrance is kept for a long time in the using process. Meanwhile, the essence is uniformly dispersed in different carrier systems through ultrasonic-assisted emulsification by adopting a nanocapsule technology, so that the stability and dispersity of the essence are improved. In addition, the temperature-responsive and pH-responsive polymer materials are introduced, so that the release rate of the essence can be adjusted according to the external environment, and the adaptability of the essence is further enhanced.

The invention discloses a preparation method of a light response type UV regulation and control material and a 3A optical film, and relates to the technical field of optical films.The preparation method comprises the steps that spiropyrane is dissolved in ethyl acetate to form an oil phase, and first liquid is obtained; dispersing nano silicon dioxide in a water phase containing gelatin to obtain a second liquid; stirring and mixing the first liquid and the second liquid to form an emulsion; evaporating the emulsion at 55-65 DEG C for at least 12 hours to form a spiropyrane-silicon dioxide hybrid nanocapsule; the spiropyrane-silicon dioxide hybrid nanocapsule is dispersed into light-cured polyacrylate, and a light response type UV regulation and control material is obtained; the 3A optical film comprises a light response type UV regulation and control layer, and the material of the light response type UV regulation and control layer is a light response type UV regulation and control material. The 3A optical film realizes flexible regulation and control of absorption of ultraviolet rays according to different weather scenes.

The present disclosure relates to a polymer nanocapsule comprising a ribonucleoprotein complex and a method for its delivery.In some embodiments, the polymer nanocapsule comprises a polymer shell and a ribonucleoprotein complex, wherein the polymer shell comprises at least one positively charged monomer, at least one neutral monomer, and a crosslinker.Also disclosed is a conjugate of the polymer nanocapsule linked to one or more targeting moieties and / or one or more stabilizing moieties.

Provided is a display apparatus including a display panel, an optically clear adhesive (OCA) over the display panel, and an auxiliary layer between the display panel and the OCA and including a nanocapsule and an OCA composition, wherein the nanocapsule is a gas-generating particle and has a diameter of at least about 100 nm and not more than about 2 μm.

The invention relate to a compound of the general formula presented in the description of the invention for use in the treatment or prevention of diseases associated with vascular endothelial dysfunction, wherein it is provided in nanocapsules having a diameter of no more than 1 pm, containing a lipophilic core and a hydrophilic shell, wherein the nanocapsules are intended for oral administration.

The invention discloses a biofilm carrier suitable for low-temperature sewage treatment and a preparation method and application thereof.The biofilm carrier takes SiC ceramic as a biofilm framework, the upper portion of the SiC ceramic is coated with a photo-thermal agent to form a photo-thermal conversion functional area, the lower portion of the SiC ceramic is a microbial adhesion functional area, and meanwhile the upper portion of the SiC ceramic is loaded with temperature response type nanocapsules; and efficient photo-thermal conversion can be carried out, functional bacteria are adsorbed and enriched, the biomass is improved, and the bacterial activity is improved in a low-temperature environment. The preparation method of the biofilm carrier is simple, and the ammonia nitrogen removal rate is high after the biofilm carrier is applied to microbial wastewater treatment.