346 results about "Calcium alginate" patented technology

The invention provides a high-porosity ceramic bond diamond micro-powder grinding tool and a preparation method and application thereof. The preparation method comprises the following steps: preparing ceramic bond diamond micro-powder composite powder by adopting a sol-gel method; the preparation method comprises the following steps: preparing porous agglomerated diamond microspheres by taking ceramic bond diamond micro-powder composite powder and an organic pore-forming agent as raw materials and adopting an atomization granulation method; the preparation method comprises the following steps: taking sodium alginate and calcium salt as raw materials, and preparing a calcium alginate water ball solution by adopting a multiple emulsion method and an atomization granulation method; the porous agglomerated diamond microspheres and the calcium alginate water balls are used as main raw materials, and a gel casting method is adopted for preparing the ceramic bond diamond micro-powder grinding tool. According to the diamond micro-powder grinding tool, the organic pore forming agent and the sodium alginate water balls are used as the pore forming agents, so that the particle size and proportion of pores in the prepared diamond micro-powder grinding tool can be accurately controlled, and the diamond micro-powder grinding tool has the characteristics of high porosity, good self-sharpening performance, low grinding resistance and the like and can be used for efficient and high-quality machining of semiconductor materials.

The invention provides a photo-thermal evaporation material based on black titanium dioxide as well as a preparation method and application of the photo-thermal evaporation material. The preparation method comprises the following steps: mixing urea, absolute ethyl alcohol and tetrabutyl titanate into a solution A, mixing absolute ethyl alcohol, ultrapure water and hydrochloric acid into a solution B, dropwise adding the solution B into the solution A, mixing to form a white colloid, heating in a water bath, drying, and calcining in a nitrogen atmosphere to obtain black titanium dioxide powder; the preparation method comprises the following steps: fully mixing a certain amount of black titanium dioxide, sodium alginate and ultrapure water to form a uniform dispersion liquid, dipping the pretreated polyurethane sponge in the dispersion liquid, and crosslinking with a calcium chloride solution to prepare the photo-thermal evaporation material of the black titanium dioxide-calcium alginate composite hydrogel. The photo-thermal evaporation material breaks through the photo-thermal application bottleneck of traditional titanium dioxide, has excellent evaporation rate and seawater desalination performance, and can effectively remove various printing and dyeing wastewater to obtain clean water.

The invention belongs to the field of interface evaporation materials, and provides an interface evaporation material loaded with PDA / rGO photo-thermal hydrogel and a preparation method of the interface evaporation material. The PDA / rGO photo-thermal hydrogel loaded interface evaporation material is composed of a sponge material and PDA / rGO photo-thermal hydrogel loaded on the sponge material, and the PDA / rGO photo-thermal hydrogel is composed of calcium alginate hydrogel and a polydopamine / reduced graphene oxide composite material loaded in a polymer network of the calcium alginate hydrogel. The polydopamine / reduced graphene oxide composite material is prepared from reduced graphene oxide and polydopamine combined on the surface of the reduced graphene oxide; the interface evaporation material takes a sponge material as a porous skeleton, the PDA / rGO photo-thermal hydrogel is attached to the porous skeleton, and the interface evaporation material has a porous structure. According to the invention, the long-term use stability and evaporation flux of the existing hydrogel-based interface evaporation material can be improved.

The invention relates to the technical field of intelligent food production, in particular to a probiotic plant beverage production method and system.The method comprises the steps that mildewed and damaged areas of penthorum chinense pursh, gastrodia elata and other plant raw materials are recognized and removed, the content of reducing sugar is detected, and a traceability identifier is generated; the preparation method comprises the following steps: compounding lactobacillus plantarum A, lactobacillus plantarum B and lactobacillus paracasei, embedding by adopting a sporopollen-calcium alginate core-shell structure, and adjusting the thickness of a shell layer and the concentration of carboxymethyl pachymaran; correcting Arrhenius equation activation energy Ea through bacterial colony density data so as to calculate the attenuation rate k value in the shelf life; after the fermentation liquor is embedded for the second time, QR code labels are generated for products qualified in primary inspection, and RFID temperature and humidity sensing chips are integrated; and pushing real-time shelf lives of qualified finished products, probiotic flora activity reports and traceability identifiers to consumers. According to the invention, the problems of low efficiency, lag in fermentation regulation, backward traceability technology and isolated intelligent technology of the traditional process are solved.

The invention discloses a bacterial cellulose-calcium alginate aerogel fiber and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a spinning solution from bacterial cellulose and sodium alginate; and (2) extruding the spinning solution into a coagulating bath by adopting an injection pump to obtain hydrogel fibers, transferring the hydrogel fibers into a replacement liquid to replace moisture in the hydrogel fibers, and then freezing and drying to obtain the aerogel fibers. According to the preparation method, bacterial cellulose and sodium alginate are mixed to prepare a spinning solution, calcium ions are used for solidification forming, the bacterial cellulose can provide a continuous, intercontinuous and non-agglomerated spatial network under a certain concentration, and the spatial network guarantees a stable spatial structure and excellent torsion resistance of the aerogel fiber; and the sodium alginate solution is uniformly dispersed on the surface of the bacterial cellulose nanofiber, and is cured by calcium chloride, so that the structural stability of the aerogel fiber is further ensured, and the mechanical property and torsion resistance of the aerogel fiber are improved.

The invention belongs to the technical field of inter-cooling water treatment, and relates to a system and method for cooperatively treating inter-cooling water through multi-stage bypasses. Comprising a gradient filtering unit, a modified adsorption unit and a composite adsorption unit which are sequentially connected, a bottom outlet of the gradient filtering unit is connected with a bottom inlet of the modified adsorption unit; a top outlet of the modified adsorption unit is connected with a top inlet of the composite adsorption unit; the gradient filtering unit sequentially comprises a manganese sand layer and a quartz sand layer from top to bottom; the modified adsorption unit is filled with a coal gangue modified straw biochar material; the composite adsorption unit is internally filled with a microcapsule-embedded calcium alginate-vinasse biochar composite material. According to the invention, three-stage cooperative treatment of iron suspended matter interception, sulfate radical adsorption and iron ion chelation is realized, and low-cost, green and sustainable indirect cooling water deep purification is realized by using the solid waste-based functional material.

The invention discloses a controllable degradation antibacterial filament fiber and a preparation method thereof, a calcium alginate filament fiber is prepared by using a wet spinning technology, and the calcium alginate filament fiber is strongly modified by physical and chemical methods respectively. The chemical modification adopts a cross-linking agent for modification, and the physical modification adopts cellulose nanocrystal (CNC) as a reinforcing material. The tensile breaking strength is improved to 43.25 cN / dtex from 16.35 cN / dtex which is not modified, the tensile breaking strength is improved by 2.6 times, and the degradation period is prolonged to 7 days from 2 days. On the basis, berberine is introduced into the fiber, so that the mechanical enhancement effect can be further achieved by means of the electrostatic attraction effect between materials, the antibacterial performance is obtained, and the antibacterial rate can reach 95.28%.

The invention discloses a calcium alginate-gelatin-lysozyme composite antibacterial film and a preparation method and application thereof, and relates to the technical field of food antibacterial packaging.The method comprises the steps that sodium alginate is dissolved in water to obtain a solution containing 1%-3% (w / w) of sodium alginate, 0.5%-3% (w / w) of gelatin is added, the mixture is heated to 50-85 DEG C in a water bath till the solution is in a dissolved state, and the solution is cooled to the room temperature to obtain the calcium alginate-gelatin-lysozyme composite antibacterial film. Finally, glycerol with the total mass fraction being 0.2%-0.5% is added to serve as a plasticizer, and a sodium alginate-gelatin composite film is prepared through drying with a solution casting method; placing the sodium alginate-gelatin composite membrane in a 0.5%-3% (w / w) CaCl2 solution to prepare a calcium alginate-gelatin composite membrane; placing the calcium alginate-gelatin composite membrane in a lysozyme solution, oscillating, taking out, and drying at 25-50 DEG C to obtain the calcium alginate-gelatin composite membrane. The method has the beneficial effects that the method is simple and easy to implement, has a good antibacterial effect and better mechanical properties, is high in safety, is green and environment-friendly, and can inhibit growth and reproduction of common pathogenic bacteria and putrefying bacteria.

The invention discloses a method for improving gastrointestinal tolerance of probiotics and a probiotic liquid core gel ball, the probiotic liquid core gel ball is prepared by adopting a calcium alginate cross-linked reverse spheroidizing method, and various indexes influencing the characteristics of the probiotic liquid core ball after re-culture are optimized, the process is simple in preparation, raw materials are natural and safe, the cost is low, and the method is suitable for industrial production. The tolerance and the survival rate of the probiotics in gastrointestinal digestion can be well improved, and the probiotic liquid core gel ball prepared by the method disclosed by the invention has good mechanical property, swelling rate and storage survival rate; by optimizing various parameters, such as re-culture time, core material liquid viscosity, polysaccharide molecular weight and a storage solution, which influence the characteristics of the probiotic liquid core ball after re-culture, the re-cultured liquid core ball has better mechanical properties, swelling rate and survival rate, and by combining with a gastric acid-cholate resistance reaction result, the survival rate of the liquid core ball is improved. The invention provides the preparation process of the re-culture solution core ball capable of effectively improving the gastrointestinal tolerance of the probiotics whether the core ball is broken or not.

The invention belongs to the technical field related to tumors, and discloses a preparation method of self-developing embolism microspheres. Comprising the following steps: producing calcium alginate microspheres through cross-linking, obtaining polyelectrolyte hydrogel microspheres through electrostatic complexation, and obtaining the self-developing embolism microspheres through amino cross-linking. According to the invention, sodium alginate and polyamino acid are used as raw materials for preparation, so that the preservative is safe and non-toxic and has biodegradability, and the degradation product has no toxic or side effect on human body. The microspheres are prepared by adopting an electrostatic spraying method, organic solvents are not used, and the microspheres are green and environment-friendly and have no toxic residues.

The invention discloses cobaltosic oxide loaded ruthenium dioxide fibers as well as a preparation method and application thereof, and relates to the technical field of electrolyzed water. The preparation method comprises the following steps: carrying out wet spinning on sodium alginate and calcium chloride to prepare calcium alginate fibers, then sequentially reacting the calcium alginate fibers with hydrochloric acid and cobalt chloride, calcining to obtain cobaltosic oxide fibers, reacting the cobaltosic oxide fibers with ruthenium trichloride, and carbonizing to obtain the cobaltosic oxide loaded ruthenium dioxide fibers. According to the invention, Co3O4 is utilized to transfer electrons to RuO2, so that the valence state of ruthenium is reduced, and dissolution of high-valence ruthenium in an acidic OER process can be inhibited, so that the OER activity under an acidic medium is improved, and the stability can be improved. Specifically, in a 0.1 M HClO4 electrolyte, under the current density of 10 mA / cm < 2 >, the overpotential is 220 mV, and the voltage is basically unchanged after continuous testing for 100 h.

The invention discloses a preparation method of immunoglobulin composite liposome nanoparticles with a controlled release characteristic, and belongs to the field of food nutrition and functional factors. Cholesterol and sitosterol are creatively used as auxiliary supports of a lecithin liposome skeleton, the stability of an immunoglobulin liposome nanoparticle structure is improved, the slow release property in the simulation effect process is improved, and a pH response type hydrogel film formed based on electrostatic crosslinking is prepared from calcium alginate and chitosan. A more stable double-layer shell-core structure is formed, so that the stability of embedded immune globulin molecules in gastric juice is further improved, and fixed-point slow release in small intestines is realized.

The invention relates to the technical field of preparation of food additives, in particular to a betacyanin microcapsule as well as a preparation method and application thereof. The preparation method comprises the following steps: jointly dissolving sodium alginate and soybean protein isolate in water to obtain an SA-SPI compound; the SA-SPI compound, CaCO3 and betacyanin are mixed, and a water phase is formed; mixing liquid paraffin, glacial acetic acid and Tween 80 to obtain an acetic acid-containing oil phase; mixing the water phase with the acetic acid-containing oil phase to form a water-in-oil emulsion, and standing to form calcium alginate gel beads; the calcium alginate gel beads are subjected to pre-freezing-freeze-drying treatment, and the betacyanin microcapsules are obtained. The prepared betacyanin microcapsule has the characteristics of controllable particle size, high stability and easiness in industrialization, and the application range of betacyanin is widened. In addition, the preparation method disclosed by the invention is safe and simple to operate, has the advantages of low cost and high benefit, and can be directly applied to large-scale production.

The invention relates to the technical field of soil amendments, in particular to a soil amendment containing earthworm enzymatic hydrolysate and a preparation method of the soil amendment. The soil conditioner containing the earthworm enzymatic hydrolysate comprises the following components: earthworm enzymatic hydrolysate microcapsules and adjuvant particles in a mass ratio of (2-4): 1, the earthworm enzymatic hydrolysate is prepared by performing enzymolysis on fresh earthworm homogenate by compound enzyme, and the compound enzyme comprises cellulase and protease; the wall material of the earthworm enzymatic hydrolysate microcapsule comprises at least one of chitosan, calcium alginate, gelatin and Arabic gum; the auxiliary agent comprises humic acid and inorganic natural minerals. According to the soil conditioner containing the earthworm enzymatic hydrolysate, the earthworm enzymatic hydrolysate is wrapped by the microcapsules, the retention rate of active ingredients in the earthworm enzymatic hydrolysate can be remarkably increased, and the soil condition can be further improved by matching with humic acid and inorganic natural minerals for use.

The invention relates to the technical field of agriculture, and discloses a preparation process of a soil conditioner. The soil conditioner is prepared from the following raw materials in parts by weight: 30 to 50 parts of plant ash, 30 to 50 parts of peanut shell, 15 to 25 parts of coconut shell, 15 to 25 parts of composite enhancer, 3 to 6 parts of ammonium sulfate, 10 to 20 parts of calcium alginate, 8 to 15 parts of urea, 12 to 18 parts of modified cellulose, 5 to 8 parts of polyethyleneimine and 30 to 50 parts of deionized water. Specifically, plant ash, peanut shells, coconut shells and other biomass are used as main materials, various auxiliaries are added, and the capacities of water retention, breathability, fertility increasing and the like of the soil are comprehensively improved; the composite reinforcing agent improves the water-retaining property and the air permeability of the soil and has the effect of balancing the pH value of the soil; the modified cellulose can improve the water-retaining property of the soil by utilizing the strong water absorption effect and reduce nutrient loss, so that the soil fertility is improved.

The present application discloses a rumen-passed Schizochytrium preparation, a preparation method of the rumen-passed Schizochytrium preparation, and an application thereof. The rumen-passed Schizochytrium preparation comprises a core material and at least one layer of coating, wherein the core material comprises calcium alginate microspheres embedded with Schizochytrium cells, and the coating is coated on the core material so that the oil is wrapped in the calcium alginate microspheres, thereby improving the stability of unsaturated fatty acids and reducing the risk of unsaturated fatty acids leaking in the rumen; the preparation method comprises firstly subjecting the Schizochytrium fermentation product to calcium alginate microsphere embedding and immobilization treatment, then drying the immobilized fermentation product to obtain the core material, and finally coating the core material to obtain the rumen-passed Schizochytrium preparation, effectively avoiding the problems of "pipeline blockage" and "oxidation and deterioration of Schizochytrium powder", thereby improving the yield of Schizochytrium powder in the drying process and simplifying the preparation process, and the finally prepared rumen-passed Schizochytrium preparation has an ideal hardness.

The application discloses a degradable cotton soft towel and a preparation method thereof, relates to the technical field of fiber composite materials, and belongs to the patent classification D01F8 / 02. The preparation method comprises the following steps: performing alkali treatment and enzymolysis on Egyptian long-staple cotton fibers to obtain pretreated cotton fibers, and preheating, stretching and setting poly-caprolactone fibers to obtain pretreated poly-caprolactone fibers; mixing and opening the two kinds of fibers, and then air-laying to form a fiber web; constructing a super water-absorbing network by impregnating a main network solution carboxymethyl chitin and oxidized cellulose nanofilament and an auxiliary network dispersion liquid calcium alginate gel microspheres and a hyaluronic acid crosslinking body; forming micron protrusions through hexagonal nickel template hot pressing, and obtaining a base by electrostatic spraying modification of nano silicon dioxide; and obtaining the cotton soft towel through vacuum drying, slitting and sterilization after spraying of an essence liquid. The cotton soft towel has excellent water absorption performance through the synergistic effect of multistage pores, a super water-absorbing network and micro-nano surface modification, and the poly-caprolactone fibers and the cotton fibers used in the cotton soft towel are mixed, and both have good biodegradability.

The invention belongs to the field of environmental governance. The invention provides a birnessite-oxygen-releasing agent composite bottom mud repair material and preparation and application methods thereof, the birnessite-oxygen-releasing agent composite bottom mud repair material comprises a modified oxygen-releasing agent, birnessite, microbial flora and an embedding matrix, the embedding matrix comprises hydrogel formed by crosslinking calcium alginate, polyvinyl alcohol and water, the microbial flora comprises a domesticated aerobic nitrogen and phosphorus removal mixed flora. According to the birnessite-oxygen release agent composite bottom mud remediation material, the photoelectrocatalytic activity of birnessite is utilized to cooperate with the oxygen release capacity of an oxygen release compound, the oxidation-reduction potential of bottom mud is improved, the continuous degradation capacity of the material to organic pollutants is enhanced, nitrogen pollutants in a water environment are removed cooperatively, and the in-situ remediation effect of the bottom mud is enhanced; the method is applied to bottom mud remediation, is more efficient and environment-friendly, and has a long-term effect.

The invention relates to a decarburization gasification slag green mortar concrete blender and a preparation method thereof. The invention relates to a bacillus pasteurii water-soluble fertilizer which comprises microbial mineralized bacteria liquid of bacillus pasteurii, microcapsules (shells of which are composed of gelatin calcium alginate composite layers and ZrO2 nano-coatings) for encapsulating sodium gluconate, steel slag powder (the particle size is less than 50 microns) subjected to carbon dioxide carbonization treatment, plasma modified powder of which the surface is grafted with a silane coupling agent, and rosin soap, wherein the shells of the microcapsules are composed of gelatin calcium alginate composite layers and ZrO2 nano-coatings; the steel slag powder is subjected to carbon dioxide carbonization treatment; a polycarboxylic acid water reducing agent, a naphthalene water reducing agent and the like. The preparation method comprises the following steps: carrying out mixed culture on the decarburized gasification slag and a microbial mineralized bacterial solution, carrying out plasma treatment on the HPMC, xanthan gum and steel slag powder, mixing the cellulose ether and the starch ether under the assistance of ultrasonic waves, packaging the retarder by a spray drying method, and mixing the modified steel slag powder and the microcapsules according to a specific mass ratio. According to the invention, a microorganism-microcapsule-steel slag synergistic system is combined with a plasma modification technology, so that high performance and greenization of the concrete blender are realized, and the strength, durability and other properties of concrete are improved.

The invention relates to a blended yarn and a preparation method thereof, the blended yarn comprises a three-layer composite structure: a surface layer comprises a single-sided single jersey weave woven by 50D-150D supercritical CO2 waterless dyed polyester filament yarn, and the single-sided single jersey weave accounts for 30%-70% of the total mass of the blended yarn; the middle layer comprises lyocell colored spun yarn which is connected through tuck loops, the lyocell colored spun yarn comprises 5wt%-15wt% of black lyocell fibers and 85wt%-95wt% of fibril which are blended, and the surface of the lyocell colored spun yarn is coated with a chitosan / sodium alginate ion cross-linked composite layer; the inner layer comprises looped pile weaves woven by lyocell colored spun yarns, the looped pile weaves are subjected to crosslinking treatment through a CaCl2 solution to form a calcium alginate flame-retardant layer, and the surface resistivity is smaller than or equal to 1 * 10 < 9 > omega.cm. The blended yarn provided by the invention is self-assembled through chitosan / sodium alginate ions, so that flame retardance, antibacterial property and antistatic property are synchronously realized; the water consumption is reduced by supercritical CO2 dyeing, and the fiber strength is protected by low-temperature setting.

The invention discloses a preparation method of modified mineral powder for adjusting and controlling the viscosity of concrete. The preparation method of the modified mineral powder comprises the following steps: placing vertical mill mineral powder in a hydrochloric acid solution for ultrasonic treatment and infiltration to obtain activated mineral powder; preparing a sodium alginate solution and a calcium chloride cross-linking solution, adding the activated mineral powder into the sodium alginate solution to obtain a mineral powder suspension, and dropwise adding the mineral powder suspension into the calcium chloride cross-linking solution to react to obtain calcium alginate coated mineral powder; the preparation method comprises the following steps: dissolving sodium citrate, glucolactone and active nano silicon dioxide in water to form precursor sol; and adding the calcium alginate coated mineral powder into the precursor sol to obtain the modified mineral powder. The modified mineral powder prepared by the method disclosed by the invention realizes double effects of morphology regularization and viscosity controllability, and has an adjusting and optimizing effect on the viscosity problem of concrete when being applied to the concrete; and the method improves the activity of the mineral powder and the bonding strength of interfaces of the mineral powder and other components at the same time, so that the compactness and the overall strength of the concrete are improved.

The invention relates to the technical field of production and preparation of ammonium tetramolybdate, and particularly discloses a preparation method for producing high-purity ammonium tetramolybdate from low-grade molybdenite. The preparation method for producing the high-purity ammonium tetramolybdate from the low-grade molybdenite comprises the following steps: S1, pretreating the low-grade molybdenite to obtain slag, and roasting the slag to obtain roasted slag; s2, the roasted slag and an ammonia water solution are mixed and leached, and a leaching solution is obtained; s3, an impurity removal agent and an adsorbent are added into the leachate for adsorption and purification, the impurity removal agent comprises mercaptoacetic acid and disodium ethylene diamine tetraacetate, the adsorbent is modified calcium alginate, and after purified liquid passes through an anion exchange resin column, an ammonium molybdate solution is obtained; and S4, adding a nitric acid solution into the ammonium molybdate solution, adjusting the pH value, and then crystallizing to obtain high-purity ammonium tetramolybdate. According to the preparation method, the purity of the ammonium molybdate solution is effectively improved through three procedures, and then the purity of ammonium tetramolybdate prepared from low-grade molybdenite is effectively improved.

The invention discloses a high-salt-resistance double-layer self-floating hydrogel evaporator and a preparation method and application thereof.The preparation method comprises the steps that firstly, sodium alginate is dissolved in water, then pyrrole is fully stirred in the sodium alginate solution, and a uniformly-mixed solution is obtained; dipping the melamine foam in the mixed solution, soaking the melamine foam in a CaCl2 solution for crosslinking, and finally soaking the primarily crosslinked melamine foam in a FeCl3 solution to oxidize the surface of the melamine foam; the preparation process is simple, the hydrogel evaporator has extremely high hydrophilicity, the three-dimensional network structure provides a favorable channel for water transmission, a certain amount of calcium alginate grids are damaged during oxidation to form capillary action with melamine foam of a carrier, the escape efficiency of water molecules is improved, and the service life of the hydrogel evaporator is prolonged. The polypyrrole nanospheres with the three-dimensional structure can perform multiple times of refraction and reflection on light to enhance light absorption, and the evaporation efficiency of aerogel intermediate water is accelerated.

The invention relates to the technical field of sewage treatment, and particularly discloses a high-porosity slow-release microelement anti-mineralization sulfur autotrophic denitrification filter material and a preparation method thereof. The sulfur autotrophic denitrification filter material is of a core-shell structure, a complex of sulfur, volcanic rock micro powder and a curing fungicide is used as an inner core, and a hydrophobic polymer coating layer and a porous ceramic bonding layer are sequentially coated on the surface of the inner core; the hydrophobic polymer coating layer is a hydrophobic breathable composite film formed by crosslinking a polydimethylsiloxane prepolymer and calcium alginate. The volcanic rock natural trace elements are utilized to realize waste control by waste, surface mineralization is effectively prevented through the hydrophobic middle layer, the activity of the microbial inoculum is protected in combination with a low-temperature flexible sintering process, and the whole device has the advantages of high porosity, light weight, quick start, long service life, low backwashing energy consumption and the like. Compared with the prior art, the invention has remarkable innovativeness and creativity in the aspects of structural design, material selection and process integration.

The invention discloses a preparation method and application of a zero-emission salt-resistant and acid-resistant hydrogel antibacterial filtering membrane. The method comprises the following steps: preparing a calcium alginate hydrogel membrane through calcium ion cross-linking, filtering a cross-linked cross-linking agent aqueous solution in which the concentration of calcium ions is reduced and sodium ions are introduced by using a nanofiltration membrane, supplementing soluble calcium salt into the ionic cross-linking agent aqueous solution in which the sodium ions are removed, and recovering the mass percent concentration of the calcium ions to be 2.5%, so that the regeneration of the ionic cross-linking agent solution is realized. And carrying out chemical crosslinking on the calcium alginate hydrogel membrane by adopting glutaraldehyde to obtain the zero-emission salt-resistant acid-resistant hydrogel antibacterial filtering membrane. Glutaraldehyde is added into the aqueous solution of glutaraldehyde after chemical crosslinking, and the mass percent concentration of glutaraldehyde is recovered to 3.0%, so that the regeneration of the chemical crosslinking agent solution is realized, and the zero emission requirement is met. The excellent antibacterial property of glutaraldehyde endows the film with obvious advantages in the aspects of storage and bacterial breeding inhibition. The hydrogel antibacterial filtering membrane can be applied to separation of dyes and inorganic salts under the conditions of high salt content and acidic pH.

The invention belongs to the field of functional polymer materials, and particularly relates to a temperature-sensitive core-shell moisture absorption microsphere based on a biomass source and a preparation method. The preparation method comprises the following steps: dissolving methyl cellulose in water to prepare a solution A; dissolving calcium lactate and LiCl in water according to a mass ratio of 1: (2-14) to prepare a solution B; uniformly mixing the two to obtain functionalized core liquid; and dropwise adding the core liquid into a sodium alginate coagulating bath to carry out ionic cross-linking reaction to form gel microspheres, and washing and freeze-drying to obtain the product. According to the invention, a stable structure with moisture absorption salt / temperature-sensitive methyl cellulose as a core and calcium alginate gel as a shell is constructed in one step through a reverse instillation molding technology. The structure can effectively prevent moisture absorption salt from leaking, efficient release of moisture can be achieved at the low temperature by means of the temperature-sensitive characteristic of methyl cellulose, and desorption energy consumption for taking water from air is remarkably reduced. The raw materials are green, the process is simple, and the prepared microspheres are good in moisture absorption performance, high in cycling stability and suitable for atmospheric moisture collection.

The invention relates to a paper pulp-based hydroxyethyl cellulose antibacterial composite film as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing paper pulp-based hydroxyethyl cellulose; (2) preparing a peppermint essential oil nano-emulsion; and (3) preparing the paper pulp-based hydroxyethyl cellulose antibacterial composite film. The average thickness of the paper pulp based hydroxyethyl cellulose antibacterial composite film provided by the invention is 0.205 + / -0.017 mm, and the density is 0.59 + / -0.05 g / cm < 3 >. Hydroxyl in paper pulp base HEC and carboxyl and hydroxyl of SA form a multiple hydrogen bond network; pO is used as a hydrophobic plasticizer and generates interfacial tension with a hydrophilic SA / HEC matrix, and tiny liquid drops or agglomerates are easily formed in the film forming process; ca < 2 + > and carboxylate radicals in SA form ionic bonds through electrostatic interaction to generate a calcium alginate gel network, so that the tensile strength of the paper pulp-based hydroxyethyl cellulose antibacterial composite film reaches 6.1 MPa, the water vapor permeability is 5.32 * 10 <-10 > g.m <-1 >. S <-1 >. Pa <-1 >, and the paper pulp-based hydroxyethyl cellulose antibacterial composite film has a remarkable inhibition effect on growth of penicillium oxalicum.

The present application relates to the field of cosmetics, and to a multiphase bead that encapsulates recombinant collagen, a preparation method thereof, and cosmetics. The multiphase bead forms a multi-layer encapsulation structure; the multi-layer encapsulation structure includes: an outer layer, an intermediate layer, and an inner layer; the inner layer includes: a water-soluble active substance; the intermediate layer is an oil phase; the outer layer includes: a wall and a water phase, the water phase encapsulates the oil phase, the wall is encapsulated in the outermost layer, and the wall is calcium alginate. Multiphase bead with a water-in-oil-in-water structure is formed, and calcium alginate forms the outer shell of the multiphase bead. The oil phase is the intermediate phase, sandwiched between the water-soluble active substance and the outer wall; the water-soluble active substance is the innermost phase, encapsulated by the outer layer of calcium alginate and the intermediate oil layer; thereby realizing the preservation of water-soluble active substances such as recombinant collagen by encapsulation technology. It can effectively protect water-soluble active substances such as recombinant collagen, reduce the decomposition rate of water-soluble active substances such as recombinant collagen, and improve the activity of cosmetics.

The preparation method comprises the following steps: S1, carrying out microwave-assisted HTC treatment on lignin, and sequentially depositing a SiO2 shell and a TiO2 shell on the surface of the lignin to form an HTC lignin coated SiO2 / TiO2 core-shell filler; hTC lignin coated SiO2 / TiO2, PA-NC, calcium alginate microspheres, a silane coupling agent and matrix resin are mixed, extruded and pelletized, an island distribution prototype is formed, and flame-retardant master batches are formed; mixing a dynamic cross-linking agent with spherical silicon dioxide to form dynamic cross-linking agent slurry; carrying out melt blending on the flame-retardant master batch, the glass fiber, the carbon nano tube and the dynamic cross-linking agent slurry, and meanwhile, applying an electric field to assist island gradient distribution; and carrying out injection molding on the melt blend, and carrying out surface heat treatment on the molded plastic to activate the dynamic cross-linking agent. The problems that in the prior art, the compatibility of a flame retardant and matrix resin is poor, the mechanical property is reduced, the weather resistance is insufficient, and the flame retardant property and the mechanical property are difficult to balance are solved.

The invention provides an environment-friendly antibacterial deodorant fiber fabric and a preparation method thereof, and relates to the technical field of textiles. According to the environment-friendly antibacterial deodorant fiber fabric and the preparation method thereof, the environment-friendly antibacterial deodorant fiber fabric consists of the following components in percentage by mass: 40-60% of alginate fiber; 10 to 25% of silver-loaded antibacterial fiber; 20-35% of polylactic acid fiber; 3-8% of a functional auxiliary agent; the silver-loaded antibacterial fiber is a nano-silver-loaded calcium alginate fiber or a silver sodium zirconium phosphate composite fiber, and the silver content is 15000-25000mg / kg; the functional additive comprises chitosan, a plant extract microcapsule and a biodegradable plasticizer. According to the environment-friendly antibacterial deodorant fiber fabric and the preparation method thereof, a composite antibacterial system is constructed through the alginate fibers and the silver-loaded antibacterial fibers, the alginate fibers provide high hygroscopicity and adsorb sweat to reduce bacterium breeding, the nano-silver / silver sodium zirconium phosphate provides broad-spectrum antibiosis, uniform distribution of silver particles is achieved through a microfluidic technology, silver ion agglomeration is avoided, and the antibacterial deodorant fiber fabric has the advantages that the antibacterial deodorant effect is achieved; the antibacterial capability of the environment-friendly antibacterial deodorizing fiber fabric is integrally and effectively improved.