112results about "Protein coatings" patented technology

The invention relates to the technical field of medical textile materials, in particular to an anti-static medical fabric and a preparation method thereof.The anti-static medical fabric comprises an outer layer, a middle layer, an inner layer and carbon fiber grids embedded into the outer layer and the inner layer, the outer layer is made of nanofibers prepared by electrostatic spinning and comprises polyvinylidene fluoride, an F-ZnO / TiO2 composite antibacterial agent, carboxylated carbon nanotubes and grafted quaternary ammonium salt; the middle layer is a chitosan enhanced polytetrafluoroethylene film, and the surface of the middle layer is sequentially coated with a chitosan / silk fibroin transition layer and a polypyrrole conducting layer; the inner layer is a blend fiber fabric and comprises hollow polyester fibers, chitosan microsphere modified cotton fibers and carbon nanotube grafted polyamide fibers; the carbon fiber grids are embedded into the outer layer and the inner layer in a warp knitting mode with the density of 20-24 pieces / cm. According to the antistatic fabric, a four-stage conductive network is formed by the outer-layer carbon nanotubes, the middle-layer polypyrrole, the inner-layer grafted carbon nanotubes and the carbon fiber grids, so that the antistatic performance of the fabric is greatly improved.

The application provides a preparation method of a zanthoxylum bungeanum essential oil active coating liquid and application thereof, and relates to the field of fruit and vegetable preservation technology. The preparation method of the zanthoxylum bungeanum essential oil active coating liquid is as follows: 3.5% zein nanoparticles are prepared; 3.5% citrus pectin solution is prepared; the 3.5% zein nanoparticles are dropped into the citrus pectin solution to obtain zein-citrus pectin Pickering emulsion; zanthoxylum bungeanum essential oil and 3.5% zein-citrus pectin Pickering emulsion are mixed to obtain zanthoxylum bungeanum essential oil Pickering emulsion; carboxymethyl cellulose sodium is dissolved in deionized water; glycerol is added; the zanthoxylum bungeanum essential oil Pickering emulsion is added under room temperature, and standing and defoaming are conducted, so that the zanthoxylum bungeanum essential oil active coating liquid is obtained. The application is favorable for inhibiting the spoilage bacteria of fresh red peppers, delaying the aging time of the peppers, and prolonging the preservation period of the peppers.

The invention discloses a preparation method of a breathable antibacterial composite fabric, and particularly relates to the field of layered fabrics. The method comprises the following steps: by taking poplar fallen leaves as a raw material, crushing, immobilizing by glutaraldehyde, and sequentially treating by pectinase, cellulase and alkaline hydrogen peroxide to form an immobilized cell template with a cell wall microstructure; then, a mixed solution of chitosan, an antibacterial agent and a cross-linking agent permeates into gaps of the template, the antibacterial agent is covalently grafted to the chitosan through a Michael addition reaction, the cell template is removed through EDTA dissolution, and a porous antibacterial layer is reserved; and finally, compounding the keratin microspheres and the silk fibroin-hydroxyethyl methylacrylate copolymer, coating two sides of the antibacterial layer with the compounded keratin microspheres and silk fibroin-hydroxyethyl methylacrylate copolymer, and initiating crosslinking by ultraviolet light to form a compact and breathable microporous coating layer. By means of bionic structure design and a covalent grafting technology, efficient unification of the antibacterial function and the air permeability is achieved.

Protein polyurethane alloys including one or more proteins dissolved within one or more polyurethanes. The protein polyurethane alloy may have one or more mechanical properties that are superior to the polyurethane in the absence of protein. The protein polyurethane alloys may be incorporated into a layered material including one or more protein polyurethane alloy layers.

A bio-ink comprising: (a) at least one polysaccharide; (b) at least one structural protein; and (c) fibrinogen, wherein the polysaccharide is selected from a group consisting of Sodium alginate Chitosan, Hyaluronic acid, Gellan gum, Dextran, Agarose, Poly(ethylene glycol), Pluronic and Carrageenan and the structural protein is selected from a group consisting of Gelatin, Collagen Vitronectin, Laminins and Fibronectin.

This invention belongs to the technical field of film reinforcement agents, specifically relating to a developing reinforcement agent, its preparation method, and its application in dry-plate glass films. The developing reinforcement agent is made from alkaline gelatin, Kathon, waterborne epoxy resin, and water; the mass ratio of the alkaline gelatin, Kathon, waterborne epoxy resin, and water is 3–9:0.1–0.3:0.1–0.6:91–97. This invention uses alkaline gelatin, waterborne epoxy resin, and Kathon to form a developing reinforcement agent, which exhibits good stability and significantly slows down the degradation rate of the emulsion layer. When used in dry-plate glass films, the developing reinforcement agent also has a reinforcing effect, preventing defects in the dry-plate glass films.

The application provides a transparent fire-retardant fireproof paint and a preparation method and application thereof, and particularly relates to the technical field of fire-retardant fireproof paint. The transparent fire-retardant fireproof paint comprises, by weight fraction, 1-8 parts of water-soluble chitosan, 0.5-5 parts of gelatin, 3-10 parts of phytic acid solution, 0.1-0.8 parts of hydrophilic fumed nano-silicon dioxide, 0.1-3.0 parts of a stabilizer and 30-80 parts of water; wherein the stabilizer is a water-soluble amine compound. By introducing the water-soluble amine stabilizer into the chitosan / gelatin / phytic acid water-based transparent fire-retardant system, the low-temperature stability, compatibility and long-term storage stability of the paint system are significantly improved.

The present invention relates to a method for coating a substrate, to the coated substrate thus obtained, to a kit for coating a substrate and to the use of the coated substrate for manufacturing an article.

The invention discloses a tannic acid-assisted antifouling coating for an inner seawater system as well as a preparation method and application of the tannic acid-assisted antifouling coating. According to the invention, tannic acid is used as an anchoring part of the antifouling coating to play a good fixing role on the surface of a base material through the adsorption effect, and then a physical interval is formed between tannic acid and the active center of protease through the connection of a hydrophilic substance in the middle layer, so that the conformation change or active site blockage possibly caused by tannic acid to protease is reduced, and the anti-fouling effect of tannic acid is improved. The activity of the protease is better maintained, and meanwhile, enough sites are provided for the protease, so that the protease can be effectively fixed on the surface of a base material to form an antifouling coating. Protein components in a biofilm matrix can be effectively degraded due to existence of protease on the surface of the antifouling coating, so that adhesion of bacteria and algae is prevented, and the antifouling coating has excellent antibacterial and anti-algae performance. The preparation method is simple, convenient, rapid, low in cost and suitable for preparation of the protective coating of the marine equipment and facilities in special scenes.

The application belongs to the technical field of food packaging materials and surface modification, and discloses a full-biobased degradable super-hydrophobic composite coating as well as a preparation method and application thereof. The composite coating comprises a first coating, which is a dry solidified layer of a composite dispersion liquid containing corn protein, inorganic nanoparticles and bacterial cellulose; and a second coating formed on the surface of the first coating, which is a solid film layer after volatilization of a solvent of a hot wax solution. The core component of the application is derived from natural biomass, which fundamentally eliminates the use of traditional paper cup plastic film coating or fluorine-containing chemicals, and realizes full-biobased, rapid degradable and environment-friendly coating. The static water contact angle of the obtained coating is greater than 150°, and the rolling angle is less than 10°, which reaches the super-hydrophobic standard. The simple solution blending and coating process provides a reliable and highly industrialized solution for the development of green paper cup products, and has a wide application prospect.

The present invention relates to plant based materials, methods for their manufacture and biomaterials incorporating plant based materials.

The invention relates to an efficient bio-based fireproof heat-insulation antibacterial coating and a preparation method and application thereof.According to the system, renewable phytic acid serves as a core functional component, the phytic acid is modified through polyethylene glycol so as to optimize the compatibility and film forming stability of the phytic acid, and the coating is endowed with lasting antibacterial performance. Piperazine and 1-hydroxyethylidene-1, 1-diphosphonic acid react to prepare piperazine 1-hydroxyethylidene-1, 1-diphosphonic acid serving as a flame-retardant component, and the piperazine 1-hydroxyethylidene-1, 1-diphosphonic acid serves as an acid source / gas source synergistic unit of the intumescent flame-retardant system to promote rapid char formation and construction of an The preparation method comprises the following steps: reacting PEG modified phytic acid with piperazine hydroxyethylidene diphosphonate, introducing aerogel and gelatin, and carrying out blending dispersion and film formation to obtain the composite coating. Wherein the aerogel constructs a high-efficiency heat insulation framework by virtue of low heat conductivity, and the gelatin provides a film forming and interface bonding effect, so that the compactness and adhesive force of the coating are further improved. The coating can simultaneously realize multifunctional synergy of flame retardance, heat insulation, bacteriostasis and mildew prevention on the surface of a base material such as wood and the like.

The invention discloses a preparation method of an antibacterial and mildew-proof coating for the inner wall of a sterile bottle, which comprises the following steps: thoroughly cleaning and disinfecting the sterile bottle through ultrasonic cleaning and high-temperature steam sterilization to ensure that no microbial residue exists in the bottle; activating the inner wall of the bottle by adopting a plasma cleaning machine; then, polylactic acid modified ovalbumin is dissolved in water, a glutamine transaminase cross-linking agent and a chitosan polymer are sequentially added to prepare a modified protein solution, and the mixture not only has excellent biocompatibility and antibacterial performance, but also can effectively prevent bacteria and mould from breeding; filtering the prepared solution, injecting the filtered solution into an activated sterile bottle, uniformly covering the inner wall of the bottle with the solution by using a spin coater, and carrying out curing treatment in a constant-temperature oven to finally form an antibacterial and mildew-proof coating; according to the method, the toxicity problem caused by chemical additives is avoided, meanwhile, the stability and durability of the coating are improved, the service life of the sterile bottle is greatly prolonged, and the protection performance of the sterile bottle is enhanced.

Silk coated and / or infused performance materials, apparel, and methods of preparing the same are disclosed herein. In some embodiments, silk performance apparel includes textiles, fabrics, consumer products, and other materials that are coated with aqueous solutions of pure silk fibroin-based protein fragments having low, medium, and / or high molecular weight in various ratios.

Disclosed in the present invention is a limiting expandable aortic valvular conduit. The limiting expandable aortic valvular conduit comprises a preliminary aortic valvular conduit attached with a collagen fiber coating, wherein the preliminary aortic valvular conduit comprises a proximal pipeline, a valve connecting conduit, and a distal conduit. Further disclosed in the present invention is a preparation method therefor. The limiting expandable aortic valvular conduit provided in the present invention is used for Bentall-type surgeries. Moreover, after the bioprosthetic valve deterioration, the limiting expandable aortic valvular conduit provided in the present invention provides the conditions for implanting a bioprosthetic valve of the same size as the original valve via an interventional approach; that is, after the biological valve deterioration, a valve of the same size as the original valve can be implanted via an interventional approach, without opening the chest of a patient to replace the biological valve of the same size.

The invention relates to a subarea response phase change visible cold chain packaging condensate water early warning identifier, and discloses an early warning identifier for carrying out real-time monitoring and graded early warning on condensate water formed in the cold chain transportation process of prefabricated dishes by combining a phase change moisture absorption indicating layer and a color changing agent microcapsule with a subarea response mechanism. The invention relates to a phase-change moisture-absorption and anti-migration packaging film which is characterized by comprising a food-grade high-moisture-permeability protective layer, a phase-change moisture-absorption indicating layer, a backing supporting layer and an anti-migration sealing edge, the food-grade high-moisture-permeability protective layer is attached to one side of the phase-change moisture-absorption indicating layer, and the backing supporting layer is attached to the other side of the phase-change moisture-absorption indicating layer; the anti-migration sealing edge peripherally wraps the edges of the food-grade high-moisture-permeability protection layer, the phase-change moisture-absorption indication layer and the backing supporting layer, the food-grade high-moisture-permeability protection layer is transparent or semitransparent, the backing supporting layer is waterproof, color-changing agent microcapsules are embedded in the phase-change moisture-absorption indication layer, and the color-changing agent microcapsules absorb water and change color.

Various cell analysis systems of the present teachings can measure the electrical and metabolic activity of single, living cells with subcellular addressability and simultaneous data acquisition for between about 10 cells to about 500,000 cells in a single analysis. Various sensor array devices of the present teachings can have sensor arrays with between 20 million to 660 million ChemFET sensors built into a massively paralleled array and can provide for simultaneous measurement of cells with data acquisition rates in the kilohertz (kHz) range. As various ChemFET sensor arrays of the present teachings can detect chemical analytes as well detect changes in cell membrane potential, various cell analysis systems of the present teachings also provide for the controlled chemical and electrical interrogation of cells. The frame rate can be increased by selecting a smaller subset of pixels to monitor, i.e. by windowing down the area of a sensor array device over which data is collected.

The invention discloses a waterproof breathable wall protection coating and a preparation method thereof, and belongs to the technical field of wall coatings. The problem that an existing outer wall waterproof coating is difficult to give consideration to breathability and waterproofness is solved. The coating comprises a primer, a floating coat and a finishing coat, the primer, the floating coat and the finish paint are respectively and independently prepared from silicone acrylic emulsion, styrene acrylic emulsion, bone glue, glutinous rice glue, nano aluminum oxide sol or nano aluminum oxide alcohol dispersion liquid, water, a dispersing agent, a coalescing agent, a defoaming agent, a thickening agent, clay filler, iron oxide red, wollastonite and hydrophobically modified bar-shaped filler; the PVC of the primer is larger than that of the CPVC, the PVC of the floating coat is approximately equal to that of the CPVC, and the PVC of the finishing coat is smaller than that of the CPVC. According to the waterproof and breathable wall protection coating, a trumpet-shaped structure with an inward opening is formed by utilizing a pigment volume concentration theory, and an aluminosilicate hydrophilic surface is formed on the surface of the coating, so that water in a wall can be quickly evaporated, and external water can be effectively prevented from entering the wall.

To simply utilize a biocompatible material such as chitin or chitosan as a cell culture surface and to provide a fusion protein simply utilizable for purification and proliferation of an objective cell.SOLUTION: The present invention provides a fusion protein comprising a region consisting of at least one peptide capable of adhering to chitins and a region consisting of at least one peptide or protein capable of adhering to cells.SELECTED DRAWING: Figure 1

An antiviral coating composition is provided. An antiviral coating composition according to one embodiment of the present invention is implemented by including an antiviral component comprising an antiviral fusion protein in which an antiviral motif is bound to an adhesive protein. According to the present invention, the composition has excellent processability enabling easy provision on various surfaces of various products, has adhesion sustainability enabling an adhesive state to be maintained for a long period of time after being adhered to a surface, and has activity sustainability enabling antiviral activity to be maintained for a long period of time without a loss in activity according to external conditions during preparation, storage and use.

The present disclosure provides a leather article and a method for making a leather article, comprising a substrate and a coating comprising a cellulose derivative having improved color fastness to rubbing. The cellulose derivative can be methyl cellulose, ethyl cellulose, ethyl methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, ethyl hydroxyethyl cellulose, cellulose acetate, cellulose triacetate, cellulose propionate, cellulose acetate propionate, cellulose acetate butyrate, microcrystalline cellulose, cellulose nitrate, or cellulose sulfate.

The application provides a sensor with antioxidant and antifouling properties and a preparation method and application thereof, and belongs to the technical field of marine chemistry. The sensor takes a glassy carbon electrode (GC) as a substrate, adopts polyaniline as a solid contact layer, and takes a calcium ion selective membrane (ISM) as a detection core. The innovation of the sensor is that a fucoidan-based functional polypeptide (PFp) is modified on the ISM to construct an antifouling layer. The PFp layer forms a triple synergistic defense mechanism of "anti-adhesion-sterilization-antioxidation". Experiments prove that the sensor can effectively inhibit the adhesion and colonization of bacteria such as escherichia coli and staphylococcus aureus and chlorella, and significantly slow down the oxidative decay of the sensing membrane. In addition, when the sensor is used for calcium ion detection in actual seawater, it exhibits excellent long-term stability and high precision, and provides an innovative strategy for continuous in-situ monitoring in complex media.

The application discloses a straw fiber base bacteriostatic mulch with temperature and humidity response performance and a preparation method thereof, and belongs to the technical field of agricultural mulch. The straw fiber base bacteriostatic mulch with temperature and humidity response performance comprises, from bottom to top, a bottom film layer, a slow-release layer and a barrier layer. The slow-release layer is obtained by coating a mixed solution of acetic acid, a bactericide, gelatin and a plasticizer onto the bottom film layer. The barrier layer is obtained by coating palm wax emulsion on the surface of the slow-release layer. That is, the straw fiber base bacteriostatic mulch with temperature and humidity response performance is constructed by combining palm wax, a bactericide (carbendazim), gelatin and a wheat straw fiber base mulch. The straw fiber base bacteriostatic mulch can respond to changes in environmental temperature and humidity, realize accurate release of pesticides, and thus accurately control diseases.

Described is an object surface coating comprising one or more polymers and a peptide covalently linked to at least one of said one or more polymers, said peptide comprisinga) a first cleavage site, wherein said first cleavage site is cleaved by a first compound specifically provided by a microbe belonging to a first group consisting of a limited number of microbial strains, species or genera, and not cleaved by any compound provided by any microbe not belonging to said first group, b) a first fluorescent agent having an emission wavelength of 650-900 nm,c) a first non-fluorescent agent having an absorption wavelength of 650-900 nm, for quenching said emission of said first fluorescent agent,wherein cleavage of said first cleavage site results in the release of said first non-fluorescent agent from the coating, the release of said first non-fluorescent agent being indicative for the presence of a microbe belonging to said first group.

The application discloses a graphene nanocapsule modified water-based epoxy-petroleum resin paint and a preparation method and application thereof. The water-based epoxy-petroleum resin paint is composed of component A and component B, and the mass ratio of the component A to the component B is 5.5-6.5:1. The component A is composed of a water-based epoxy emulsion, a liquid petroleum resin, graphene nanocapsules, a cosolvent, pigments, fillers, a dispersing agent, a defoaming agent, a substrate wetting agent, an anti-flash rust agent, an adhesion promoter and water. The component B is composed of a curing agent and water. The preparation method of the water-based epoxy emulsion and the graphene nanocapsules is simple and the process is stable. When the paint is prepared, the raw materials are mixed uniformly in batches according to the proportion, and when the paint is used, the component A and the component B are mixed uniformly according to the proportion. The graphene nanocapsule modified water-based epoxy-petroleum resin paint has the advantages of strong adhesion, short drying time, low VOC, excellent water resistance and salt mist resistance, and can be used in the anticorrosion field of offshore rocket launching.

This invention provides a two-component flame retardant, its preparation method, and its application, relating to the technical field of flame retardants. The two-component flame retardant comprises component A and component B; wherein component A comprises starch phosphate ester, calcium chloride, surfactant, propylene glycol, aerogel, and water; wherein component B comprises bone glue and water. This two-component flame retardant is environmentally friendly, non-corrosive, and has no impact on plant growth. It can be used on trees, leaves, paper, walls, and insulation boards, exhibiting excellent performance. It demonstrates good weather resistance when used in rainy seasons in the south, cold regions in the north, and hot summers, without affecting product quality while providing excellent protection.

This invention provides a method for preparing an antimicrobial peptide composite material, comprising: S1 preparing a β-TCP / HyA porous substrate; S2 synthesizing mesoporous polydopamine (MPDA); S3 dispersing the β-TCP / HyA porous scaffold and the mesoporous polydopamine in deionized water for a second crosslinking reaction to form a β-TCP / HyA / MPDA composite suspension; and then adding the antimicrobial peptide KR to the β-TCP / HyA / MPDA composite suspension to induce a binding reaction, thereby obtaining the antimicrobial peptide composite material. This invention crosslinks β-tricalcium phosphate (β-TCP), hyaluronic acid (HyA), and mesoporous polydopamine (MPDA) to construct a multifunctional composite substrate that combines physical support, biocompatibility, and high-efficiency loading. The mesoporous structure of MPDA provides numerous anchoring sites for the antimicrobial peptide KR. Through MPDA adhesion and covalent fixation strategies for the antimicrobial peptide, high-density and high-activity loading of KR molecules is achieved, effectively solving the problems of easy detachment and "fixation leading to inactivation".

The application provides an edible active coating for preventing dry consumption under an ultralow temperature condition and a preparation method, and belongs to the technical field of active packaging. The application combines double-layer coatings, inhibits free radical oxidation generated by freezing through an inner antioxidant, and effectively locks water and blocks external oxygen permeation through the synergistic effect of an outer high-barrier structure, thereby significantly improving the freezing preservation effect of food, and the raw materials are natural and safe, the preparation method is reasonable, and the application has good practical application value. The application solves the problems of poor effects of edible freezing protection coatings suitable for extremely cold environments in the prior art.

The present invention relates to plant-based materials, to a process for the preparation thereof and to biomaterials incorporating the plant-based materials of the invention.SOLUTION: A) forming a solution comprising one or more vegetable proteins in a solvent system, wherein the solvent system comprises a plurality of miscible co-solvents, wherein a first co-solvent increases the solubility of the vegetable protein and a second co-solvent decreases the solubility of the vegetable protein; and b) allowing the protein in the solution to undergo a sol-gel transition to form a vegetable protein hydrogel.SELECTED DRAWING: None

The invention belongs to the technical field of magnesium alloy surface composite coatings, and particularly relates to a magnesium alloy surface non-magnetic iron-manganese collagen chitosan composite coating. The composite coating comprises a FeMn coating and a CaP / Col-CS coating, the FeMn coating is attached to the magnesium alloy substrate, and the CaP / Col-CS coating is attached to the FeMn coating. The preparation method comprises the following steps: preparing a FeMn coating on a clean and dry magnesium alloy substrate; and then a CaP coating and a Col-CS coating are prepared through a chemical conversion method. The polymer composite coating obtained by the invention not only has excellent corrosion resistance, but also can keep excellent biocompatibility; and meanwhile, the composite material also has antiferromagnetism and excellent mechanical properties which are necessary under an imaging monitoring condition. The structural design is reasonable, the preparation process is simple and controllable, the performance of the obtained product is excellent, and industrial application is facilitated.